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| Kaiser
Permanente Clinical Practice Guidelines - Heart Failure due to Left-Ventricular
Systolic Dysfunction | Clinical
Practice Guidelines - Heart Failure due to Left-Ventricular
Systolic Dysfunction.
Endorsed by
Regional Chiefs of Internal
Medicine and Cardiology
Issued: May 1997 An adaptation of a clinical practice guideline
issued by
the Agency for Health Care Policy and Research
Heart Failure: Evaluation
and Care of Patients with Left-Ventricular
Systolic Dysfunction. The Permanente Medical Group Clinical Practice
Guidelines have
been developed to assist clinicians by providing
an analytical framework
for the evaluation and treatment of selected
common problems
encountered in patients. These guidelines
are not intended
to establish a protocol for all patients with
a particular condition.
While the guidelines provide
one approach to evaluating
a problem, clinical
conditions may vary significantly from individual
to individual. Therefore,
the clinician must exercise independent judgment
and make
decisions based upon the situation presented. |
/httpdocs/cajud/heart |
 |
| HEART FAILURE TEAM Rik Smith, MD, Chair, Internal Medicine, Harvard
Robert Blumberg, MD,
Cardiology, Redwood City James
Chan. Pham D. PhD, Pharmacy, Operations, Regional
Offices Robert
Heller, MD., Cardiology. Harvard David Levy, MD, Internal Medicine, Walnut Creek.
Park
Shadelands Pam
Kotler, PhD, TPMG Department of Quality and Utilization,
Regional Offices Valerie
McClymont, NE Cardiovascular Surgery, San
Francisco John
Takahashi, MD, Emergency, Santa Clara Susan Woodier MD, Cardiology, Santa Teresa
PROJECT MANAGEMENT Pam Kotler, PhD, TPMG Department of Quality and
Utilization,
Regional Offices Purvi
Mody Kunwar. MPH, TPMG Department of Quality and
Utilization DESIGN AND PRODUCTION Wendy Jung, MA, TPMG Department of Quality and
Utilization ACKNOWLEDGEMENT Jodi Cupp. MBA, Lanna Butler-McCoy, Kalev
Golubijatnikov,
and Anita Klein of KP Consulting, Kaiser Foundation Health Plan/Hospitals
provided additional support
for the development and
implementation of these guidelines. CLINICAL
REVIEW GROUP The
following individuals reviewed this guideline and
contributed to its final form. Henry M. Brodkin. MD, Redwood City
Paul A. Feigenbaum. MD, San Francisco
David Gee. MD, Walnut Creek
Arthur Klatsky, MD, Oakland
Pansy Kwong. MD, Oakland
David Langkammer. MD, Antioch
Eleanor Levin. MD, Santa Clara
Roy Meyer, MD, Santa Rosa
Jonathan R. Rompf, MD, Santa
Teresa Laurie J.
Weisberg, MD, South San Francisco David Williams, MD, Vallejo
Copyright
1997 The
Permanente Medical Group, Inc. All rights reserved.
Please contact TPMG Department of Quality and Utilization at 510-987-2309 or
tie-line
8-427-2309 for permission to reprint any
portion of this publication. For
additional copies of
the guidelines, please call 510-987-2950
or tie-line 8-427-2950.
Contents
- Clinical Practice Guidelines for Heart Failure
Topic
INTRODUCTION
INITIAL EVALUATION
CLINICAL VOLUME OVERLOAD
SCREENING FOR ARRHYTHMIAS
ASSESSMENT OF LEFT-VENTRICULAR SYSTOLIC
DYSFUNCTION DIASTOLIC
DYSFUNCTION PHARMACOLOGICAL MANAGEMENT/SYSTOLIC DYSFUNCTION
DIURETICS
DIGOXIN ACE INHIBITORS ANTICOAGLimON ATRIAL FIBRILLATION ADDITIONAL PHARMACOLOGICAL MANAGEMENT
GENERAL COUNSELING ACTIVITY DIET MEDICATIONS
COMPLIANCE
PROGNOSIS PREVENTION IN
ASYMPTOMATIC PATIENTS WITH LEFI-VENTRICULAR
SYSTOLIC DYSFUNCTION
HOSPITAL
MANAGEMENT REVASCULARIZATION No ANGINA AND
No MI NO ANGINA AND
HISTORY OF MI
ANGINA COUNSELING AND
DECISION CONTINUE
MEDICAL MANAGEMENT
REVASCULARIZATION FOLLOW-UP HEART
TRANSPLANTATION
SELECTED
REFERENCES GUIDELINE
HIGHLIGHTS FIGURES AND
TABLES
Figure
1: Overview of
Evaluation and
Care ofPatients With Heart Failure Figure 2:
Initial Evaluation of Patients uith Heart Failure Figure 3:
Recommended Tests for Patients with Signs or
Symptoms of Heart Failure Table 1:
Initial Diagnostic Testing in Heart Failure Table 2: Other
Laboratory Testing to Consider in the
Initial Evaluation of Selected Patients Who Have Been Diagnosed with
Heart Failure
Table 3:
Potentially Reversible Causes of Heart Failure Table 4:
Medications Used in Heart Failure Figure 4:
Pharmacological Managenment of Patients with
Heart Failure
Table 5:
Suggested Topics for Patient, Family and Caregiver
Education and Counseling Figure 5:
Evaluation and Treatment of Coronary Heart
Disease in Patients with Heart Failure Heart
failure is characterized by: signs and symptoms
of intravascular and interstitial volume overload,
including shortness of breath,
rales, and edema or
manifestations of inadequate tissue perfusion, such
as fatigue or poor exercise tolerance.
These are the results of the inability of
the heart to
meet bodily demands. There
is a trend towards omitting the word "congestive"
with heart failure since not all patients are congested;
however, for purposes of this
documents, the
terms heart failure, congestive heart failure, and
left-ventricular systolic dysfunction may be considered
interchangeable.
| | 
|
| CLINICAL
PRACTICE GUIDELINES for
HEART FAILURE INTRODUCTION
1. signs and symptoms of intravascular
and interstitial
volume overload, including shortness of breath, rales, and
edema or
2. manifestations of inadequate
tissue perfusion,
such as fatigue or poor exercise tolerance. These
are the results of the inability of the heart to
meet bodily demands. The
National Heart, Lung, and Blood Institute estimates
that over 2 million Americans have heart failure with
about 200,000 deaths per year.
Approximately 400,000 new
cases are diagnosed each year
and about 1 million hospitalizations are due to heart
failure for an estimated cost
of over $7 billion. At
Kaiser Permanente Northern California we had 3,952
hospitalizations in
1995 for which the principle condition was heart
failure and another 2,755 hospitalizations for which heart
failure was
an associated condition for an estimated cost of
$59,476,854 for inpatient care. Since the American population
is aging, conditions such as
heart failure will become
more prevalent. However,
there is evidence that changes in both inpatient
and outpatient management can have substantial impacts
on moibiditv and mortality.
The Agency for Health Care Policy and Research
issued
a clinical practice guideline on "Heart Failure: Management
of Patients with
Left-Ventricular Systolic Dysfunction"
in 1994. This guideline was developed through a rigorous
evidence-based process in
which 16 clinical experts reviewed
over 1.000 studies and developed a guideline which
primarily addresses outpatient
management. Each recommendalion
made by the panel was graded by the level of
evidence upon which it was based:
A. Good evidence: Evidence from well-conducted
randomized
controlled trials or cohort studies B. Fair evidence: Evidence from other types of
studies
(case-controlled, uncontrolled) C. Expert Opinion
Because
heart failure is such a prevalent condition for
which changes in management can be expected to substantially
increase positive out-comes,
the TPMG Department of Quality
and Utilization was asked by the Continuum of Care
Group of Kaiser Foundation
Health Plan/ Hospitals to
sponsor the development of a guideline for heart failure
management. A team of
clinicians from around Northern
California was convened as a Heart Failure Guideline Team
and met eight times to review
the AHCPR guidelines. The
team examined each of the recommendations made by AHCPR and categorized them
into
three categories: agree;
agree with discussion: and need to see further
evidence. When further evidence was needed, a literature
search was undertaken for new
research bearing on the
issue and the team then discussed the new evidence,
the team did not go back and
review all the studies summarized
by AHCPR. The following work represents the
KPNCR Heart Failure Guideline Team's
adaptation of the
AHCPR guideline. ...there
is evidence that changes in both inpatient and
outpatient management can have substantial impacts on
mormidity and mortality due to
heart failure. All
patients who complain of dyspnea on exertion, paroxysmal
nocturnal dyspnea (awakening from sleep with
shortness of breath) or orthopnea
(shortness of breath
while lying down) should have heart failure considered
in the initial evaluation
unless other causes for the
symptoms are clearly present. |
| 
|
| INITIAL EVALUATION All
patients who complain of dyspnea on exertion, paroxysmal
nocturnal dyspnea (awakening from sleep with shortness
of breath) or orthopnea
(shortness of breath while lying
down) should have heart failure considered in the initial
differential diagnosis unless
other causes for the symptoms
are clearly present. Even the presence of other
explanations for the symptom of dyspnea does not exclude
multiple
etiologies, including heart failure.
The physical examination can
provide important information
about the etiology of patients' symptoms and about
appropriate initial treatment.
However, physical signs
are not highly sensitive for detecting heart failure.
Therefore, patients
with symptoms that are highly suggestive of
heart failure (dyspnea on exertion, paroxysmal nocturnal
dyspnea, orthopnea) should be
evaluated in accordance
with the algorithm below. In addition to low sensitivity, many physical
findings
of heart failure are not highly specific. Elevated jugular
venous pressure, a third heart
sound and a laterally
displaced apical impulse are the most specific Findings
and are virtually diagnostic
in patients with compatible
symptoms* Pulmonary rales or peripheral edema are
relatively nonspecific finding
for heart failure.** The
presence of these signs does not require
measurement of left-ventricular ejection
fraction if
other symptoms, signs, and radiographic findings of heart
failure are absent or if they
can be attributed to other
causes. A
variety of conditions can mimic or provoke heart failure,
including pulmonary disease, myocardial infarction,
arrhythmias, pulmonary emboli,
cardiac tamponade, anemia,
renal failure, nephrotic syndrome, and thyroid disease.
These conditions should be
considered in every patient
with suspected new-onset heart failure. This guideline
does not address the
management of patients with these
conditions. |  |
A variety of conditions can mimic or provoke heart
failure,
including pulmonary disease, myocardial
infarction, arrhythmias, pulmonary emboli,
cardiac tamponade,
anemia, renal failure, nephrotic syndrome,
and thyroid disease. Elevated jugular venous pressure, a third heart
sound
and a laterally displaced apical impulse are the most
specific findings and are
virtually diagnostic in patients
with compatible symptoms. Pulmonary rules or peripheral edema are relatively
nonspecific
findings for heart disease. Symptoms and signs of volume overload include
orthopnea,
paroxysmal nocturnal dyspnea, dyspnea
on exertion, pulomonary rales, a third
heart sound, jugular
venous distension, ascites, peripheral edema,
and pulmonary vascular congestion or
pulmonary edema
on chest x-ray. Screening
evaluation for asymptomatic arrhythmias is not
routinely warranted as part of the evaluation
of patients with heart failure.
Measurement of
left-ventricular performance is a critical
step in the evaluation and management of
almost all patients with suspected or
clinically apparent
heart failure. |
| 
|
| Practitioners should
perform a chest x-ray, EKG, complete
blood count, serum sodium, serum potassium, serum
BUN, serum creatinine, and
serum glucose on all patients
with suspected or clinically evident heart failure.
A thyroid-stimulating hormone
(TSH) level should also
be checked in all patients with heart failure and no
obvious etiology and in
patients who have atrial fibrillation
or other signs or symptoms of thyroid disease.
See Table I for the rationale for these
tests. In
addition, several other tests may be considered part
of the initial evaluation in selected circumstances
(see Table 2).
CLINICAL VOLUME OVERLOAD
During the initial evaluation,
the clinician should determine
if the patient manifests symptoms or signs of volume
overload. Symptoms and signs
of volume overload include
orthopnea, paroxysmal nocturnal dyspnea dyspnea
on exertion, pulmonary rales, a third
heart sound, jugular
venous distension, hepatic engorgement, ascites,
peripheral edema, and
pulmonary vascular congestion or
pulmonary edema on chest x-ray. SCREENING
FOR ARRHYTHMIAS Screening
evaluation for asymptomatic arrhythmias, such
as ambulatory electrocardiognphic (Holier)
recording, is not routinely warranted as
part of the
evaluation of patients with heart failure. Patients
with known heart failure and a
history of unexplained
syncope should be discussed with a cardiologist.
ASSESSMENT OF LEFT-VENTRICULAR FUNCTION Patients with suspected heart failure should
undergo
echocardiography and, if needed, radionuclide
ventritulography to
measure left-ventricular ejection
fraction (if information is not available from
previous tests).
Measurement of
left-ventricular performance is a critical
step in the evaluation and management of almost
all patients with suspected or clinically
evident heart
failure. The combined use of history and physical,
chest x-ray and
electrocardiography cannot be completely
relied upon to distinguish between the |
 | | INITIAL
EVALUATION All patients who
complain of dyspnea on exertion, paroxysmal
nocturnal dvspnea (awakening from sleep with
shortness of breath) ororthopnea
(shortness of breath
while lying (town) should have heart failure considered
in the initial differential
diagnosis unless other causes
for the symptoms are clearly present.
Even the presence of other
explanations for the symptom
of dyspnea does not exclude multiple etiolegies,
including heart
failure. The
physical examination can provide important information
about the etiology of patients' symptoms and
about appropriate initial treatment.
However, physical
signs are not highly sensitive for detecting heart failure.
Therefore, patients with
symptoms that are highly suggestive
of heart failure (dyspnea on exertion, paroxysmal
nocturnal dyspnea, orthopnea)
should be evaluated in
accordance with the algorithm below. In addition to low
sensitivity, many physical
findings of heart failure
are not highly specific. Elevated jugular venous pressure, a third heart
sound
and a laterally displaced apical impulse are the most
specific findings and are
virtually diagnostic in patients
with compatible symptoms.* Pulmonary rales or
peripheral edema are relatively
nonspecific findings
for heart failure,** The presence of these signs does
not require measurement of
left-ventricular ejection
fraction if other symptoms, signs, and radiographic
findings of heart failure are
absent or if they can he
attributed to other causes. A variety of conditions can mimic or provoke heart
failure,
including pulmonary disease, myocardial infarction,
arrhythmias, pulmonary emboli,
cardiac tamponade, anemia,
renal failure, nephrotic syndrome, and thyroid
disease. These conditions should be
considered in every
patient with suspected new-onset heart failure.
This guideline does not address the
management of patients
with - This
section just ends here without explanation.
No pages are missing in this book. Patients with suspected heart failure should
undergo echocardiography
and if needed radionuclide ventriculography to measure left-ventricular
ejection
fraction (if information about ventricular function
is not available from previous
tests). Once
left-ventricular systolic dysfunction is confirmed,
the results of the history and physical examination
should be reviewed to search
for clues to potentially
treatable causes of heart failure. Routine use of myocardial biopsy is not warranted.
Echocardiography or radionuclide
ventriculography can
substantially imporove diagnotic accuracy in
distinguishing between systolic and
diastolic dysfunction. The optimal treatment of diastolic dysfunction is
not
well defined but agents used to treat systolic dysfunction
can be deleterious in patients
with diastolic dysfunction. Because
ischemia can produce diastolic dysfunction before
systolic dysfunction develops, physiologic testing
for ischemia should be
considered in patients with diastolic
dysfunction, particularly when dyspnea on
exertion is a prominent symptom.
|  | | DIASTOLIC
DYSFUNCTION As many as 40% of
patients with a clinical diagnosis
of heart failure have preserved left-ventricular systolic
function and no evidence of
valvular heart disease. Most
have left-ventricular diastolic dysflunction.
In these cases, the left ventricle has
increased diastolic
stiffness and cannot fill adequately abnormal
diastolic pressures. The elevated
pressures required
for filling result in symptoms of pulmonary
congestion. In addition, the reduced
left-ventricular
filling volume leads to lowered stroke volumes
and symptoms of poor cardiac output.
Most diastolic
dysfunction resulls from coronary artery
disease or hypertension. Because ischemia can
produce diastolic dysfunction before
systolic dysfunction
develops, physiologic testing for ischemia
should be considered in patients with
diastolic dysfunction,
particulariy when dyspnea on exertion is a
prominent symptom. Hypertension is also a
common cause
of diastolic dysfunction which can develop
even in the absence of left-ventricular
hypertrophy. The
optimal treatment of diastolic dysfunction is not
well defined but agents used to treat systolic
dysfunction can be
deleterious in patients witb diastolic
dysfunction. Excessive diuresis can reduce
stroke volume and cardiac
output. Digitalis may further
decrease left-ventricular compliance.
The role of ACE inhibitors is not clear.
Vasodilators
may be detrimental in diastolic function although ACE
inhibitors may have beneficial effects by
directly improving
ventricular relaxation and causing regression of
hypertrophy.
This guideline does not provide
management strategies
for diastolic dysfunction and the remainder of
the guideline discusses heart failure due
to left-ventricular
systolic dysfunction. Patients who are
symptomatic from diastolic dysfunction may
benefit from
referral to a cardiologist. PHARMACOLOGICAL
MANAGEMENT: SYSTOLIC DYSFUNCTION
DIURETICS Diurelics are
extremely useful for reducing symptoms
of volume overload, including orthopnea and
paroxysmal nocturnal dyspnea. Patients
suspected of heart
failure with signs of significant volume overload
should be started immediately
on a diuretic. Those with
severe volume overload should be started on a
loop diuretic. Patients with mild volume
overload may
be managed adequately on thiazide diuretics.
Patients with minimal symptoms and minimal
volume overload
should receive dietary counseling and may not require diuretic therapy.
Although initiation of diuretics
is important in these
patients, it is also important to avoid over-diuresis
before starting ACE
inhibitors. Volume depletion may
lead to hypotension or renal insufficiency when
ACE inhibitors are started or when the
doses of these
agents are increased to full therapeutic levels.
After the ACE inhibitor is
increased to full therapeutic
levels, additional diuretic therapy may be necessary to optimize the patient's status.
The recommendations
contained in this guideline are designed
for patients with heart failure due of
left-ventricular systolic dysfunction,
i.e., EFs of less
than 35-49 percent. Patients suspected of heart failure with signs of
significant
volume overload should be started immediately on a diuretic.
...it is important to avoid
over-diuresis before starting
ACE inhibitors. All
patients should have their serum potassium levels
checked frequently (e.g., every 3 days until stable)
during initiation, titration,
or modification of diuretic
or ACE inhibitor therapy and every few months thereafter. ACE inhibitors may be considered as first-line
therapy
in the subset of heart failure patients who
present with fatigue or mild dyspnea on
exertion and
who do not have any other signs or minimal
symptoms of volume overload.
Diuretics may be added
if symptoms persist. ...relatively low blood pressure, moderate renal
insufficiency,
and mild hyperkalemia are not contraindictions to ACE inhibitors.
Potassium
depletion commonly occurs when patients are
treated chronically with diuretics. However,
ACE inhibitors decrease renal potassium
losses and raise
serum potassium levels, so many patients
with heart failure who are treated with
both agents may
not develop potassium depletion. All patients
should have their serum potassium levels
checked frequently
(e.g., every 3 days until stable) during
initiation, titration, or modification of
diuretic or
ACE inhibitor therapy and every few months thereafter.
Potassium-sparing diuretics
should be used with great
caution, if at all, in patients taking ACE inhibitors.
DIGOXIN
Digoxin increases the force of ventricular
contraction
in padents with left-ventricular systolic dysfunction.
It reduces clinical
deterioration and the need for hospitalization,
but does not reduce overall mortality
in this group of patients. Digoxin should
be added to
the medical regimen of patients with heart failure
who remain symptomatic after
optimal management with
ACE inhibitors and diuretics but should be
used with caution because of its potential
toxicity. ACE INHIBITORS Because of their beneficial effect on mortality
and
functional status, angiotensin-converting enzyme
(ACE) inhibitors
should be prescribed for all patients
with left-ventricular systolic dysfunction
unless specific
contraindications exist: (1) history
of intolerance or adverse reactions to these
agents, (2) serum
potassium >5.5 mEq/L that cannot
be reduced or (3) symptomatic hypotension.
If diuretic therapy is initiated
in patients with clinical
volume overload and left-ventricular systolic
dysfunction is confirmed as the cause of
symptoms, an
ACE inhibitor should be added, even if the
patient has become asymptomatic on
diuretics. Patients
should be assessed closely for volume
depletion before therapy is initiated
(ortho-static hypotension,
prerenal anotemia, melabolic alkalosis), and if volume depletion is evident,
diuretics
should be withheld for a brief period
(24 to 48 hours) until volume depletion
resolves. ACE
inhibitors may be considered as first-line
therapy in the subset of heart failure
patients who present
with fatigue or mild dyspnea on exertion and who do not have any other signs or
minimal
symptoms of volume overload. Diuretics may be added if symptoms persist.
Side effects of ACE
inhibitors, particularly relative
hypotension and renal dysfunction, have been
emphasized making some physicians
reluctant to use ACE
inhibitors. However, the average changes
in blood pressure and serum chemistries in
the SOLVD
and CONSENSUS trials were actually quite
small such that relatively
low blood pressure, moderate
renal insufficiency, and mild hyperkalemia are not
contraindications to ACE
inhibitors |  |
| 
|
| If
serum creatinine is 3.0 mg/dL or greater, ACE inhibitors
should be used with caution and titrated
upward slowly, as tolerated, to a maximum
of half the
usual maintenance dose. Patients with lesser
degrees of renal insufficiency also
require close follow-up
and a reduced dose if the glomeerular filtration
rate is less than 30 mL/min.
Hyperkalemia is considered a contraindication to
ACE inhibitor
therapy unless the serum potassium can be reduced. Potassium-sparing diuretics should
be
stopped in all patients who are being started
on ACE inhibitors, regardless of the serum
potassium. These
agents may be restarted if the patient remains
hypokalemic on full therapeutic doses of ACE
inhibitors.
Potassium
supplements should also be withheld unless the
serum potassium is low(<4.0 mEq/L). Patients
with low blood pressure must also be carefully
monitoied but therapy should be continued. In the absence of orthostatic hypotension, a
systolic
blood pressure of 90 mm Hg is perfectly acceptable.
Some patients with heart failure will feel
best with
a blood pressure below 90 mm Hg. If a physician is
uncomfortable treating with
ACE inhibitors in the setting
of a low blood pressure, he or she should
refer the patient to someone with
expertise in treating
heart failure, rather than abandon attempts to use
ACE inhibitors or other
vasodilators. Cough
is common in patients taking ACE inhibitors, but
it is also common in patients with heart failure.
Patients who report cough
while taking ACE inhibitois
should be evaluated to see whether this results
from pulmonary congestion before
considering discontinuing
ACE inhibitors. For most patients, the
cough is a nuisance that they are willing
lo tolerate
in exchange for the benefits of the medication,
however, angioedema of the oropharyngeal
region is an
absolute contraindication to further use of an
ACE inhibitor. Recently angiotensin II receptor blockers, such as
Losartan,
which avoids the side effect of cough,
have recently become available.
The outcome of long-term use
of these agents in patients
with heart failure is cunently under evaluation.
Hydralazine Isosorbide
(HYD/ISDN) is an appropriate
alternative in patients with contraindications or
intolerance to ACE inhibitors.
Patients who are at high risk for first-dose
hypotension
should be given a small dose of a short-acting
agent (e.g., Caplopril 6.35 mg) and monitored
closely for 2 hours. Patients over the age of 75 may also be at
increased risk for hypotension and may
be started on once-daily dosing. If the test dose is tolerated,
or if a test dose is unnecessary, Caplopril
12.5mg TIDorLisinopril 2.5mg QD can be started.
Patients with hypertension can be started on Captopril 25
mg TID or Lisinopril 5 mg QD. Patients
should have blood pressure, renal function, and
serum potassium monitored within 1 week of
/httpdocs/cajud/heart initiation
of an ACE inhibitor. It is appropriate to contact the patient by
telephone
48 hours after an ACE inhibitor is initiated to ask
about symptoms of hypotension,
Treatment should be modified
if the patient develops (1) an increase
in serum creatinine of 0.5 mg/dL or more,
(2) a serum
potassium of 5.5 mEq/L or higher, or
(3) symptomatic hypotension.
Doses
of ACE inhibitors should be titrated upward over
2 to 3 weeks with the goal of reaching the
doses comparable to those used in
large-scale clinical
trials: Captopril 50 mg TID or Lisinopril 20mg QD.
Volume status should be
reassessed if hypotension or
a rise in the serum creatine of 0.5 mg/dL occurs
as the dose is increased. If
volume depletion occurs,
the dose of the ACE inhibitor should be reduced
to the highest dose that was previously
tolerated and
the diuretic dose reduced. The dose of the ACE inhibitor should then be
increased
again. If higher doses are not toleraled despite
euvolemia, then the lower dose
should becontinued or
a trial of HYD/ISDN instituted. Patients
with low blood pressure must also be carefully
monitored but therapy should be continued.
Patients should have blood pressure, renal
function, and
serum potassium monitored within 1 week
of initiation of an ACE
inhibitor. It
is appropriate to contact the patient by telephone
48 hours after an ACE inhibitor is initiated to
ask about symptoms of hypotension.
Doses of ACE inhibitors should be titrated upward
over
2 to 3 weeks with the goal of reaching the
doses comparable to those used in
large-scale clinical
trials: Captopril 50 mg TID or Lisinopril 20 mg QD.
With judicious dosing and close follow-up, almost
all
patients can tolerate these agents. The full effect
of /httpdocs/cajud/heart ACE inhibitors on functional status may not be
seen for
several months. Patients who tolerate the
preceding doses but who remain
symptomatic may benefit
from higher doses. If
patients remain symptomatic on a combination of a diuretic,
an ACE inhibitor, and digoxin, a consultation should be obtained with a
cardiologist if
this has not been done previously.
With judicious dosing and close follow-up, almost
all
patients can tolerate these agents. The full effect of ACE inhibitor on functional
status
may not be seen for several months. Patients who tolerate the preceding doses but who
remain
symptomatic may benefit from higher doses. ANTICOAGULATION Routine anticoagulation is controversial. Patients
with
a history of systemic or pulmonary embolism, atrial fibrillation or mobile
left-ventricular
thrombi should be anticoagulated to an
International Normalizalion Ratio of 2.0 to 3.0.
There
has never been a controlled trial of anticoagulalion
for patients with heart failure. The risks
/httpdocs/cajud/heart of
routine treatment, including intracranial or gastrointestinal
hemorrhage, must be balanced against the relatively low reported incidence of
significant
thromboembolic events in this population. ATRIAL FIBRILLATION Atrial fibrillation is present in 10 to 15% of
patients
with heart failure and it may occur in up to 50%
of patients with more severe
heart failure. If atrial
fibrillalion causes sudden, severe worsening of
heart failure, immediate cardioversion may
be necessary.However,
most palienis can be stabilized by using digoxin to control the heart rate. Once
stable,
all patients should be considered for cardioversion. Patients
with less than one year history of atrial fibrillation
should be considered for cardioversion.
Patients should be anticoagulated to
therapeutic levels
for 3 to 5 weeks before cardioveision and for
1 to 2 months after cardioversion.
ADDITIONAL
PHARMACOLOGICAL MANAGEMENT If
patients remain symptomatic on a combination of a
diuretic, an ACE inhibitor, and digoxin, a consultation should be obtained wilh a
cardiologist if
this has not been done previously, Patients
with persistent volume overload despite initial
medical management may require more aggressive administration of the current diuretic
(e.g.,
intravenous administration), more potent diuretics, or a combination of diuretics. Salt
restriction
should be re-emphasized and compliance
assessed and encouraged since
dietary noncompliance
is often the cause of persistent volume overload.
Patients with heart failure and angina who will
not or
cannot undergo revascularization should be
treated with nitrates and aspirin.
/httpdocs/cajud/heart Patients
with persistent dyspnea after optimal doses
of diuretics, ACE inhibitors and digoxin
should have a Trial of hydralazine and/or
nitrates added
to the medical regimen. The addition of a vasodilator to an ACE inhibitor
may
also relieve symptoms. Direct vasodilalors
may be particularly helpful in patients
with hypertension
or evidence of severe mitral regurgitation.
Even patients with blood pressure in the
usual normal
range may benefit by reducing their blood
pressure with direct vasodilator.
Alternatively, if a
patient primarily has symptoms of pulmonary
congestion or has a low syslolic blood
pressure, nitrates
are preferred over arterial vasodilators. Patients
who remain symptomatic or hypertensive may benefit
from more aggressive treatment. After maximization of conventional therapy, beta
blockers,
calcium channel blockers, or alpha blockers may be employed. However, none of these
drugs
has been approved specifically for use in heartfailure, although carvedilol (Coreg),
a new
drug with combined alpha and beta blocking
activity, has been recommended for
approval by the Cardiovasular
and Renal Drugs Advisory Committee. Beta-adrenergic receptor and calcium
channel
blocking drugs have potential negative
inotropic effects and should be considered
investigational
and only given after consultation with
a practitioner who is experienced in their
use in heart
failure./httpdocs/cajud/heart Several
studies have demonstrated that the careful titration
of beta blockers in selected heart failure patients results in improved
symptomatology,
ventricular function, and exercise tolerance.
Benefits appear to be more pronounced in
patients with
idiopathic dilated cardiomyopathy than
those with coronary disease when compared
to placebo-controlled
trials. Three
studies have demonstrated a significant decrease
in cardiovascular events, and two studies to date have shown improved survival.
Further studies are underway.
Only a few randomized trials of calcium channel
blochers
in heart failure patienis have been published
and most trials have shown either no
difference or an
increase in mortality. The results appear due to
negative inotropic effects in
patients on nondihydropyridine
drugs such as verapamil and diltiazem.
Even some of the dihydropyridine drugs
such as nifedipine,
nicardipine and isradipine have resulted in
activation of the renin-angiotensin system
and a poor
prognosis. However,
recent randomized studies with felodipine and
amiodipine have demonstrated improved
symptoms and no increase in mortality; in
fact, there
appears to be improved survival in the smaller
subgroup of patients without coronary
disease. Therefore,
given the informatton currently available,
the use of calcium channel blockers in
/httpdocs/cajud/heart heart
failure should be restricted to amlodipine or
felodipine; patients on other calcium channel
blockers should have
their therapy changed to one
of these agents or an alternative medication.
Use
of alpha blockers has not demonstrated benefit in
heart failure patients but should be considered
in patients who remain hypertensive after
treatment This
is especially important given that hypertension
often predates worsening heart failure and
a poor prognosis. Several
studies have demonstrated that the careful titration
of beta blockers in selected heart failure
patients results in improved
symptomatology, ventricular
function, and execise tolerance. ...given
the information currently available, the use
of calcium channel blockers in heart failure should
be restiricted to amlodipine
or felodipine;patients on
other calcium channel blockers should have their
therapy changed to one of
these agents or an alternative
medication. The impact of heart faiilure on a patient's life
may be
related as much to psychological adaptation
condition as to impairment in physical
functioning. Recent studies
show that patients with heart failure can
exercise safely, and regular exercise may improve
functional status and decrease symptoms. Patients
should be encouraged to keep a daily record of
their weight and to bring that record with
them when visiting their
practitioner. Patients
should be carefully instructed in how to change
their medical regimen on an as-needed
basis or call for specific instructions if
they experience
a weight gain greater than 3 to 5 pounds
since their last clinical evaluation.
GENERAL
COUNSELING After a diagnosis
of heart failure is established, all
patients should be counseled regarding the
nature of heart failure, drug regimens,
dietary restrictions,
symptoms of worsening heart failure,
what to do if these symptoms occur, and
prognosis. The
impact of heart failure on a patient's
life may be related as much to
psychological adaptation
to the disease as to impairment in physical functioning. Nursing interventions,
family involvement,
and support groups may all help patients cope with heart failure.
Practitioners
should emphasize the importance of not
smoking or chewing tobacco and should
recommend that
patients receive vaccination against influenza and pneumococcal disease.
It
is vital that patients understand their disease and
be involved in developing the plan for
their care. In addition, family members
and other responsible
caregivers should be included in counseling and decision-making sessions.
Durable power
of attorney or other advance directives should be discussed with all patients.
ACTIVTTY
Regular exercise such as walking or
cycling at a comfortable
pace should be encouraged for all patients with stable heart failure. Even short
periods
of bed rest result in reduced exercise
/httpdocs/cajud/heart tolerance
and aerobic capacity, muscular atrophy, and
weakness. Recent studies show that patients with heart failure can exercise safely,
and
regular exercise may improve functional
status and decrease symptoms. An
explanation of the importance
of exercise can help prevent patients from becoming afraid to perform daily
activities
that might provoke some shortness of breath. Patients should be advised to stay as
active
as possible. There is insufficient evidence at this time to
recommend
the routine use of formal rehabilitation programs for patients with heart failure.
DIET
Dietary sodium should be restricted to as
close to 2
grams per day as possible, especially
in patients with evidence of fluid
retention and/or volume
overload. Acute ingestion of alcohol depresses myocardial
contractility
in patients with known cardiac disease. This may be clinically
significant in
patients with heart failure, although
there are no studies that address this
issue. Complete
abstention from alcohol is crucial for
patients with alcohol-induced
cardiomyopathy. For patients
without a history of alco- holism,
it is unclear whether abstinence makes a difference
in functional status or mortality In general alcohol use should be discouraged. If
patients
want to continue to drink, they should
be strongly advised to have no more than
one drink per
day. 0ne drink
equals 4oz.of wine, 12oz of beer, or a mixed
drink or cocktail containing no more than
1 ounce of alcohol.
Patients
with heart failure should be advised to avoid
excessive fluid intake. However, fluid restriction is
not advisable unless patients develop
significant hyponatremia. Patients should
be
encouraged to keep daily records of their weight and
to bring those records with them when
visiting their practitioners. Patients should
be carefully instructed in how to change their medical
regimen on an as-needed basis or call for
specific instructions if they experience a weight change
greater than 3 to 5 pounds. |
 |
Dietary
sodium should be restricted to as close to
2
grams per day as possible, especially in patients with
evidence of fluid retention/volume overload. Practitioners
should empasize the importance of not smoking
or chewing tobacco... Patients
should be advised to stay as active as possible.
Because
noncompliance is a major cause of morbidity and
unnecessary hospital admissions in heart failure, education programs or support
gruops
should be a routine part of the care of patients with heart failure.
In
general, alcohol use should be discouraged.
Asymptomatic
patients who are found to have moderately
or severely reduced left-ventricular
systolic function (ejection fraction
<35 to 40 percent)
should be treated with an ACE inhibitor to
reduce the chance of developing clinical
heart failure. ...the
ER should be determined in most patients following
a myocardial infarction unless they are at low risk for significant systolic
dysfunction,
i.e., unless they meet all of the following criteria:
1. No previous myocardial
infarction. 2.
Ingerior infarction. 3.
Relatively small increase in cardiac enzymes
(i.e., <2 to 4 times normal). 4. No Q waves develop on
electrocardiogram. 5.
Uncomplicated clinical course (e.g., no arrhythmia
or hypotension). MEDICATIONS Medications are prescribed for patients with heart
failure
for two basic reasons: (1) to reduce mortality (angiotensin-converting
enzyme
[ACE] inhibitors, isosorbide dinitrate/ hydralazine) and (2) to reduce symptoms
and
improve ftinctional status (ACE inhibitors, diuretics, digoxin). Patients should
be provided
with complete and accurate information concerning the medications they are
being
asked to take, including the reasons
the medications are being prescribed,
dosing requirements
and possible side effects. COMPLIANCE Because noncompliance is a major cause of
morbidity and
unnecessary hospital admissions in heart failure, education programs or support
groups
should be a routine part of the care
of patients with heart failure.
Noncompliance may reduce
life expectancy and is also a major cause of hospitaliations. Practitioners should be
attuned
to the problem of noncompliance and its causes and should discuss the importance
of compliance
at Follow-up visits and assist patients in removing barriers to compliance.
PROGNOSIS
Heart failure is a serious disease and it
is important
that patients receive information concerning
their prognosis in order to make decisions
and plans
for the future. Prognosis can vary considerably depending upon etiology, functional
class,
and response to therapy. Studies quote mortality rates from 5 to 5O% per
year
depending upon these factors and there are indications that newer forms of therapy have
improved
prognosis. Practitioners should discuss patients' decisions
regarding
resuscitation and all patients should be encouraged to complete a durable power of
attorney
for health care or another form of advance
directive. If
a patient desires resuscitation, family members should
consider learning cardio-pulmonary resuscitation. Such a course should be combined
with
psychosocial support for patients and
family members because it may otherwise
have negative
psychological consequences. Patients,
families, and caregivers must be provided with
the accurate information necessary to make decisions and plans for the future, while
maintaining
hope and emphasizing that good quality of life
is still possible.
PREVENTION IN
ASYMPTOMATIC PATIENTS WITH
LEFT-VENTRICULAR SYSTOLIC DYSFUNCTION Asymptoniatic
patients who are found to have moderately
or severely reduced left-ventricular systolic
function (ejection fraction <35 to 40 percent)
should be treated with an ACE inhibitor to reduce the
chance of developing clinical heart failure. Probably the
largest number of such patients will be
those who have recently sustained a myocardial
infarction.
For this
reason, the EF should be determined in most
patients following a myocardial infarction unless they are
at low risk for significant systolic
dysfunction, i.e., unless they meet all of the following
criteria: 1.
No previous myocardial infaiction. 2.
Inferior infarction.
3.
Relatively small increase in cardiac
enzymes (i.e., <2 to 4 times normal). 4.
No Q waves develop on electrocardiogram 5.
Uncomplicated clinical course (e.g
no arrhythmia or hypotension). Other
asymptomatic patients without infarctions may be
found to have reduced EF on evaluation of heart
murmurs or cardiomegaly. These patients should
also be treated with ACE inhibitors. |
/httpdocs/cajud/heart |
Redadmission rates as high as 57 percent within 90
days
have been reported in patients over the age of
70 years. Proper discharge
planning is essential
to prevent those unnecessary readmissions. Patients who have been hospitalized for heart
failure
should be contacted within 2 to 4 days of discharge...
Appropriate laboratory tests
should also be checked within
7 days following discharge, and medication
adjusted as necessary.
HOSPITAL MANAGEMENT The
presence or suspicion of clinically evident heart
failure and any of the following findings usually
indicate a need for observation or
hospitalization: *
clinical or electrocaidiographic evidence of acute
myocardial ischemia, *
moderate or severe pulmonary edema or severe respiratory
distress not responsive to treatment, oxygpn saturation below 90
percent (not
due to pulmonary disease), *
severe complicating medical illness (e.g., pneumonia),
* symptomatic hypotension or syncope,
heart failure refractory
to outpatient therapy, *
inability to arrange adequate social support for safe
outpatient management, or *
new onset and poorty tolerated supraventricular tachyarrhythmias.
Occasionally,
patients with one of the above findings
may be managed at home or in an assisted
living or nursing home setting if the
clinician believes
it is safe to do so and adequate follow-up
can be arranged. Heart failure is one of
the most common
causes for recurrent admission to hospitals,
and many of these admissions may be
avoidable. Readmission
rates as high as 57 percent within 90 days have been reported in patients over the age
of 70
years. Proper discharge planning is essential to prevent unnecessary readmissions.
Patients with heart failure
should be discharged from
the hospital only when: *symptoms
of heart failure have been adequately controlled,
* all reasons for admission haw been
treated or stabilized, *
patients and their caregivers have been educated about
medications, diet, activity, and exercise recommendations, and symptoms of
worsening heart
failure, and *
adequate outpatient support and follow-up care have
been arranged. Patients
who have been hospitalized for heart failure
should be contacted within 2 to 4 days
of discharge to (1) make sure that
medications are being
taken properly, (2) assess compliance
with reduced salt diet, (3) ensure that
weight is stable, (4)
adjust the dosage of diuretics and other medications
if necessary, and (5) determine that
the patient, family, and caregiver
understand when and
how to contact the practitioner. Appropriate laboratory tests should also be
checked within
7 days following discharge, and medication adjusted as necessary.
This guideline does not address
management strategies
specific to the hospital setting (e.g.,invasive hemodynamic monitoring, intravenous
dobutamine).
Refer to Inpatient Care Path.
REVASCULARIZATION Coronary artery disease is currently the most
common
cause of heart failure in the US. Some patients may benefit from revascularization.
In particular, patients with
viable myocardium subserved
by substantially stenotic vessels may reasonably be expected to obtain longevity
benefits
and, perhaps, improved quality of life if the stenosis is successfully relieved. On
the
other hand, revascularization entails significant
morbidity and mortality.
Before studies are initiated
to determine if patients are candidates for
revascularization (i.e., have viable
myocardium supplied
by stenotic arteries), it is important
to determine first if any conditions exist
that may preclude
intervention or that could raise the
risk of revascularization above any
potential benefit
These may include: *
patient would not consider surgery or is unable to
give informed consent, *severe
comorbid diseases, especially renal failure,
pulmonary disease, or cerebrovascular disease (e.g., severe stroke),
* very low ejection fraction
(i.e., <20%), *
illnesses with a projected life expectancy less than
or equal to 1 year. These include advanced cancer, severe lung or
liver disease,
chronic renal disease, advanced diabetes mellitus, and advanced collagen
vascular
disease, or *technical
factors, including previous myocardial revascularization
or other cardiac procedure,
history of chest irradiation, and diffuse
distal coronary artery atherosclerosis. Patients without contraindication to
revascularization
should be advised of the possibility
of revascularization, including its
potential benefits
and known risks. Three
parameters are important: (1)
likelihood of surgically correctable lesions, (2) Bipedal benefits of revascularization, and
(3) expected risks and
potential harms of revascularization.
These parameters vary depending
on several factors, including
whether clinical evidence of myocardial ischemia is present and the
patient's general
state of health. The
three major randomiad clinical trials involving revascularization
excluded patients with marked left ventricular dysfunction (EF<
35% in CASS).
In addition, patients were required to have clinical evidence of ischemia and
demonstrated
benefits have largely been proportionate to the degree of myocardium at risk. In general,
the
presence of heart failure increases perioperative
risk but appropriately
selected patients with heart failure
may experience substantial benefit. Counseling should be based on patients' particular
characteristics,
particularly on an assessment of patients' risk factors for coronary artery
disease. Patients
can be classified into three major subgroups: (1) patients who have neither angina nor a history
of
infarction, (2) patients without significant angina(angina that limits exercise or
occurs
frequently at rest), but who have a history of MI, and (3) patients
with significant angina
pectoris. Coronary
artery disease is currently the most common cause
of heart failure in the US. Some patients may benefit from revascularization.
In general, the
presence of heart failure increases perioperative
risk but appropriately /httpdocs/cajud/heart
selected patients with heart failure may
experience substantial
benefit. Patients
without contraindication to revascularization
should be advised of the possibility
of revascularization, including its
potential benefits
and known risks. The
likelihood of coronary disease in heart failure patients
without angina or history of myocardial infarction varies depending on patient
risk
factors. ...there
is no evidence from controlled trials to show
that revascularization benefits heart
failure patients in the absence of
evidence of reversible
ischemia. The
decision about whether to perform physiological tests
for ischemia or coronary angiography should be based on a consideration of
patients'
risk factors for coronary artery disease and the likelihood of alternative
etiologies
(e.g., alcoholic cardiomyopathy). Patients without angina but with a history of MI
should
be advised to undergo an adequate physiologic test for ischemia.
NO ANGINA AND NO MI
The likelihood of coronary disease in
heart
failure patients
without angina or history of myocardial infarction varies depending on patient
risk
factors (e.g., age, sex, smoking history,
/httpdocs/cajud/heart hyperlipidemia,
hypertension, family history of premature
coronary artery disease, and diabetes). Patients should he counseled concerning the
expected benefits
and risks of evaluation for ischemia, including the fact that there is no
evidence
from controlled trials to show that revascularization benefits heart failure patients
in
the absence of evidence of reversible
ischemia. It is unclear whether patients who are unlikely to
have
coronary disease should be routinely evaluated for ischemia.
The decision about whether to
perform physiological tests
for ischemia or coronary angiography should be based on a consideration of
patients'
risk factors for coronary artery disease and the likelihood of alternative
etiologies (e.g.,
alcoholic cardiomyopathy). If the decision is
made to proceed with an evaluation, noninvasive testing for ischemia (e.g., thallium
scanning)
should be performed as the initial test; coronary angiography may be
performed if
noninvasive testing demonstrates ischemia or is inconclusive.
Given that
non-invasive listing is sometimes more difficult
to interpret in patients with cardiomyopathy, there should be a low threshold
for contacting
a cardiologist or considering angiography in patients with significant risk
factors
for coronary disease. NO ANGINA AND
HISTORY OF MI Available
evidence supports that as many as half of patients
who suffer a myocardial infarction have clinically important myocardial
ischemia
in areas supplied by other coronary arteries. There are no data, however, to show that
revascularization
of these areas is beneficial,
in terms of increased life expectancy or
enhanced quality of life, in the absence
of angina. Nevertheless, patients with
large areas of
ischemia may possibly benefit from revascularization. Patients without angina but with a history of MI
should
be advised to undergo an adequate physiologic test for ischemia. Coronary
angiography should
be considered if: (1)
ischemic regions are detected, or (2) physiologic
test is inconclusive, or (3)
physiologic test shows a fixed defect outside the
infarct zone. This strategy will miss a small number of patients with false
negative
physiological tests. However, in view of the lack of evidence that these patients
benefit
from surgery, together with a consideration
of the morbidity, mortality, and the cost
of catheterizing all patients in this
group, this drawback is considered
relatively minor. There
are a number of acceptable physiologic tests for
ischemia. Clinicians must be familiar
with the availability, quality, and cost
of the different
physiologic tests for ischemia and should use this information in deciding what test
to
order. The most widely available and
accepted procedure for determining the
presence of ischemic
myocardium is myocardial /httpdocs/cajud/heart
perfusion scintigraphy, such as thallium
scanning, with
post-stress, redistribution, and rest reinjection imaging.
ANGINA The
potential benefit of revascularization is clearest
and probably greatest in individuals
with severe or limiting angina or
angina-equivalent (e.g.,
recurrent acute episodes of pulmonary
edema despite appropriate medical
management). Available
evidence suggests that about 75 percent of heart failure patients with
significant
concomitant angina have operable disease. Although the three randomized trials of coronary
artery
bipass graft (CABG) surgery excluded
patients with heart failure or severe
left-ventricular
dysfunction, several cohort studies and registries suggest that patients with
angina
and impaired left-ventricular function
have improved functional status and
survival if they
undergo bypass surgery. Heart failure patients without contraindications
to revascularization
and who have exercise-limiting
angina, angina that occurs frequently
at rest, or episodes of acute pulmonary
edema that may be secondary to ischemia
should be advised
to undergo coronary artery angiography as the initial test for significant
coronary
lesions. Some patients may need physiological testing for ischemia to interpret
the significance
of the findings from coronary artery angiography. COUNSELING
AND DECISION Based on the
results of physiological testing and/or
cardiac catheterization, a cardiologist
should give the patient a refined estimate
of the risks
and benefits of revascularization. The patient can then decide if he or she desires
revascularization. No
data are available that address the question of how
much ischemia should be present to justify the risk of revascularization for the
chance
of an improvement in survival. In general, patients with severely depressed
ejection
fractions (EF <20 percent) should
undergo revascularization only if large
areas of ischemia
are detected. Patients with less severely depressed ejection fractions may be
willing
to risk surgery for more modest-sized
ischemic areas. The lack of data in this
area makes it
difficult to justify revascularization
for small ischemic areas, except when
severe angina is
present. CONTINUE MEDICAL MANAGEMENT
The medical therapy started under
"Pharmacological Management"
should be continued if (1) a patient is not a candidate for
revascularization,
(2) studies show insufficient evidence
of reversible ischemia, or (3) surgery has
been perfomied
but the patient still has
residual left-ventricular dysfunction. As stated
previously, an assessment of compliance
is recommended at each visit. Use of home
health nurse
visits may be helpful for this purpose. Coronary angiography should be considered if: (1)
ichemic
regions are detected, or (2) physiologic test is inconclusive, or
(3) physiologic test shows a
fixed defect outside the
infarct zone. The
potential benefit of revascularization is clearest
and probably greatest in individuals with
severe or limiting angina or
angina-equivalent. Available
evidence suggests that about 75 percent of heart
failure patients with significant concomitant angina have operable disease.
On follow-up visits,
patients should be asked about the
presence of orthopnea, paroxysmal nocturnal dyspnea, edema, and dyspnea on
exertion.
It is important to remember that patients
are likely to experience changes in
symptoms before there
is evidence of deterioration by physical examination. Revascularization Coronary artery bypass grafting is the only
revascularization
procedure that has been shown to prolong life in patients with angina and
left-ventricular
dysfunction. The
effect of coronary artery angioplasty on survival
of heart failure patients has not been studied,
nor are the risks of angioplasty in heart
failure patients
known at this time. The choice between
CABG and angioplasty will depend on
numerous considerations,
including multiple technical factors (e.g., coronary anatomy), relative risk of
the
two procedures in individual patients, and
patient preferences. A
discussion of these factors
lies beyond the scope of this guideline. Follow-up Careful history and physical examination should be
major
guides to determining outcomes and directing therapy. A thorough
history would
evaluate satisfaction with current lifestyle and include questions regarding physical and
mental functioning
and the presence or absence of heart failure symptoms.
On follow-up visits, patients
should be asked about the
presence of orthopnea, paroxysmal nocturnal dyspnea, edema, and dyspnea on
exertion.
It is important to remember that patients
are likely to experience changes in
symptoms before there
is evidence of deterioration by physical
examination. Patients should be encouraged to keep a daily
record of
their weight and to bring that record with
them when visiting their
practitioner. Patients
should be carefully instructed in how to change
their medical regimen on an as-needed
basis or call for
specific instructions if they experience a
weight change greater than 3 to 5 pounds.
Family members or
other caregivers can often contribute
important additional information about
the patient's status and compliance when
asked similar
questions. In some cases, it may be desirable
to interview family members or other
caregivers apart
from the patient in order to validate the patient's
report. If
discrepancies do occur, additional measures
need to be instituted for clarification. In addition
to questions about symptoms
and activities, providers
should ask about other aspects of patients'
health-related quality of life, including
sleep, sexual
function, mental health (or outlook on life), appetite,
/httpdocs/cajud/heart and
social activities. A worsening in any of these
parameters may indicate the need to adjust therapy.
To ensure optimal care for
heart failure, the provider
must view the disease in the broad context of the
patient's life and see how the
patient is coping with
the disease. Consultation with psychologists,
dietitians, health educators, and clinical
nurse specialists
may be necessary to deal with specific problems
such as depression, difficulties adhering
to complicated
dietary or medical regimens, or poor
functional status.
The team recommends against the
routine use of invasive
or noninvasive tests, such as echocardiography
or maximal exercise testing, for
monitoring the response
of heart failure patients to treatment.
No data exist to suggest that the
monitoring of these
endpoints contributes information beyond
that obtained by a careful history and
physical examination.
However, repeat testing may be useful
in patients with a new heart murmur, a new
myocardial
infarction, or sudden deterioration despite
compliance with medications.
Repeat testing as
part of the evaluation for transplantation may also be
necessary.
Heart Transplantation
Patients with severe
functional limitations or repeated
hospitalizations despite aggressive
/httpdocs/cajud/heart medical
therapy in whom revascularization is not likely
to convey benefit should be considered
for cardiac transplantation.
Kaiser Permanente
has a regional heart transplant program at
Santa Teresa Kaiser where pre-transplant
and post-transplant
care are performed. The transplant surgery is performed at Stanford or
another
designated center of excellence. The program at Santa Teresa is part of a Kaiser
Permanente
national transplant network which has standarized criteria for transplant
candidacy.
These are available upon request and similar to those used throughout the
country.
These criteria require that the patient
be unlikely to benefit from other therapy,
that heart
transplantation be likely to confer benefit and that any cormorbid states be unlikely
to
significantly offset the expected benefit. Patients thought to be candidates for cardiac
transplant
should be referred for cardiac consultation at the local facility.
Subsequently,
the cardiologist can refer the patient
for formal evaluation. A history
and phsycial,
including details of recent attempts at improving
medical therapy, and pertinent
study results can be sent
to the heart transplant service. Patients who are candidates for heart
transplantation
will generally have a number of poor prognostic indicators, such as reduced LVEF
(<20%),
markedly increased left-ventricular size (LVEDD>7.0 cm), severe symptoms
(advanced NYHA Class
III or Class IV), low exercise tolerance (measured objectively as maximum oxygen
consumption),
evidence of activation of the renin-angiotensin system (low serum Na++),
and
a low cardiac index (<2.0) despite
aggresive medical therapy. In
addition to the history
and physicial, the avaluation includes a
panel of laboratory tests available as STR
Panel 1, a
chest x-ray, and EKG, an echocardiogram,
dietary and psychosocial evaluations,
pulmonary function
tests, exercise ergometry, and right heart catheterization. Selected
patients
undergo carotid and peripheral arterial dopplers,
measurement of creatinine
clearance, and abdominal ultrasound.
Emergency consults should /httpdocs/cajud/heart be directed to Dr. Susan Woodley or the
cardiologist
on call through the Santa Teresa page
operator at 8-440-7188 or (408) 972-7188.
Patients whose
symptoms are controlled need not be referred
for transplantation but may benefit from contact with the transplant
service. Patients
ineligible for transplantation on the basis of
comorbid conditions should be informed of
the availiability
of experimental protocols, although such programs may not be an insured benefit
available
through Kaiser Permanente. In summary, heart failure is a treatable condition
which
many patients can live with comfortably.
Most patients will sustain substantial
benefit from education
as well as dietary and medical management. Such therapies should be
maximized
prior to consideration for heart transplantation
and experimental surgical procedures.
This guideline is one
component of a multi-disciplinary
approach to the treatment of heart failure which is designed to maximize patient
outcomes
and potentially minimize the need for heroic procedures.
To ensure
optimal care for heart failure, the provider
must view the disease in the broad context of the patient's life and see how the
patient
is coping with the disease. Consultation with psychologists, dietitians,
health educators,
and clinical nurse specialists may be necessary to deal with specific
problems... The
team recommends against the routine use of invasive
or noninvasive tests, such as echocardiolography or maximal exercise testing,
for monitoring
the response of heart failure patients to treatment.
Kaiser Permanente has a regional
heart transplant program
at Santa Teresa Kaiser where pre-transplant and post-transplant care are
performed. In
summary, heart failure is a treable condition which
many patients can live with comfortably.
Most patients will sustain substantial
benefit from education
as well as dietary and medical management. Such therapies should be
maximized
prior to consideration for heart transplantation
and experimental surgical
procedures. This
guidelines is one component of a multidisciplinary
approach to the treatment of heart failure which is designed to maximize patient outcomes and
potentially
minimize the need for heroic procedures.
| /httpdocs/cajud/heart |
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