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Heart failure
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DEFINITION
? HEART FAILURE
– the pathophysiological state in which the heart
is unable to pump blood at a rate commensurate
with the requirement of the metabolizing tissues
or can do so only from an elevated filling
pressure,
– Usually caused by a defect in myocardial
contraction (myocardial failure),
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DEFINITION
? CONGESTIVE HEART FAILURE
– Clinical manifested as
? Pulmonary congestion
? Systemic congestion
? Inadequate tissure blood perfusion
? HEMODYNAMICALLY heart failure (cardiac
dysfunction) is diagnosed when
– LVEDP>18mmHg or
– RVEDP>10mmHg
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UNDERLYING CAUSES
? Primary myocardial dysfunction (systolic
and/or diastolic)
– Cardiomyopathy
– Primary or secondary metabolic disturbances of
myocardium
? Overloading of heart
– Pressure overloading
– Volume overloading
– limited diastolic function
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UNDERLYING CAUSES
Age 70.3± 10.1 yr,
Causes CHD 65.8%
Hypertension 36.0%
Dila,Cardiomy,11.9%
With 2° DM 14.9%
Shanghai OPD,Chin J Cardiol 2001;29:644
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Precipitating factors
? infection
? arrhythmias
? Pulmonary embolism
? overfatigue
? Pregnancy and delivery
? Anemia and hemorrhage
? others
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Pathophysiology
? Frank-Starling mechanism
? Activation of neurohormonal
pathway (SAS and RAS)
? Myocardial damage and remodeling
? Diasatolic heart failure
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,
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CLINICAL CLASSIFICATION
? A cute vs,chronic heart failure
? Right-sided vs,left-sided Heart failure
? Low-output vs high-output heart failure
? Systolic vs diastolic heart failure
? Asymptomatic vs congestive heart failure
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Chronic left-sided HF, symptoms
Respiratory distress
Exertional dyspnea
Paroxysmal nocturnal dyspnea
Orthopnea
Acute pumnonary edema
Cough (nonproductive),and hemoptysis
Reduced exercise capacity
Fatigue and weakness
Urinary symptoms
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Chron,left-sided HF, Physi,findings
General appearance
Dyspnetic
Cyanosis,icterus,malar flush,diminished
pulse pressure,reduced SBP,rapid,weak and
thready pulse in severe HF
Evidence of ↑adrenergic activity
Peripheral vasoconstriction (pallor,coldness
of extremities and cyanosis of the digits ),
Diaphoresis with sinus tachycardia
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Chron,left-sided HF, Physi,finding
Cardiac findings
Cardiomegaly
S3 gallops
Accentuation of P2
Systolic murmur
Pulsus alternans
Pulmonary rales
Moist rales over
the lung bases
Rhonchi wheezes
↓BS
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Chron,right-sided HF, symptoms
? Gastrointestinal symptoms
? Symtoms of urinary system
? Dull ache in right upper quadrant,
? dyspnea
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Chron,right-sided HF, Physi,finding
? Cardiac findings
? Hepatojugular reflux
? Congetive hepatomegaly or
tenderness
? Edema
? Hydrothorax and ascites
? Others (cyanosis,and etc.)
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Chronic HF, labolaroty findings
? Routine lab,And serum electrolytes
& liver function tests
? ECG
? Echocardiography
? Chest Roentgenogram
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ECG
? Suggesting basic presence of basic
heart diseases
? Atrial and ventricular hypertrophy,
myocardial ischemia or infarction,
arrhythmia
? V1ptf<- 0.03mm/ s,indicating left
atrial overloading,
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Echocardiogram
? M mode,2D echo and Dopler technique for
systolic and diastolic function of LV
– LVDd and LVDs( Dd and Ds)
– LV fraction of shortening
(△ D% =( Dd - Ds ) / Dd × 100%)
– mVCF =( Dd - Ds)/ Dd × LVET
– SV
– LVEF
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Chest X ray
Left-sided heart failure
cardiomegaly (cardiothorax ratio> 50%)
dilated pulmonary vein
pulmonary infiltrates,
prominent bronchovascular markings
Interstitial edema,Kerley.s B line,alveolar edema,
pleural effusion when PCWP> 25~ 30mmHg,
Right-sided HF
Cardiomegaly
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Invasive hemodynamic monitoring
? Using Swan-Ganz cather and
thermodilution method for
measurement of
– Intracardiac and vascular
pressure
– Cardiac output
to asses cardiac function
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Invasive hemodynamic monitoring
? CVP( 中心静脉压 ) 6~ 12cmH2O
? PAP( 肺动脉压 ) 12~ 30/4~ l3mmHg
? PCWP( 肺毛细血管楔嵌压 ) 6~ 12mmHg
? SV( 心搏量 ) 60~ 70ml
? SI( 心搏指数 ) 4l~ 51ml/m2
? CO( 心排血量 ) 5~ 6L/min
? CI( 心排指数 ) 2.6~ 4.0L/min.m2
? EF( 射血分数 ) 0.5 ~ 0.6
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Chronic HF, diagnosis
?causes
?anatomy
?pathology
?arrhythmia
?Functional classification
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Functional classification( NYHA)
? Class I-No limitation,Ordinary physical activity does not
cause undue fatigue,dyspnea,or palpitation
? Class II-slight limitation of physical activity,
Such patients are comfortable at rest,Ordinary
physical activity results in fatigue,palpitation,dyspnea,or angina,
? Class III-marked limitation of physical activity,
although patients are comfortable at rest,less than
ordinary activity will lead to symptoms,
? Class IV-inability to carry on any physical activity
without discomfort,symptoms of congestive failure
are present even at rest.With any physical activity,
increased discomfort is experience,
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Chronic HF, diff,diagnosis
Left-sided HF
With pulmonary dyspnea,COPD,asthma
Metabolic acidosis
Cardiac neurosis
Right-sided HF
Pricarditis
Hepatic,renal edema,
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Functional classification( NYHA)
? Class I-No limitation,Ordinary physical activity does not cause
undue fatigue,dyspnea,or palpitation
? Class II-slight limitation of physical activity,Such patients are
comfortable at rest,Ordinary physical activity results in fatigue,
palpitation,dyspnea,or angina,
? Class III-marked limitation of physical activity,although
patients are comfortable at rest,less than ordinary activity will
lead to symptoms,
? Class IV-inability to carry on any physical activity without
discomfort,symptoms of congestive failure are present even at
rest.With any physical activity,increased discomfort is
experience,
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Chronic HF, diff,diagnosis
Left-sided HF
With pulmonary dyspnea,COPD,asthma
Metabolic acidosis
Cardiac neurosis
Right-sided HF
Pricarditis
Hepatic,renal edema,
Survival
Morbidity
Exercise capacity
Quality of life
Neurohormonal changes
Progression of CHF
Symptoms
TREATMENT OBJECTIVES
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Chronic HF,treatment
Reducing load
Rest and tranquilizer
Control salt intake
Water intake
diuretics
Vasodilators
Improve CO
digitalis
non-digitalis
positive inotropic
agents
aldost,antagonist
β-bloker
correcting PF and cause of HF
diastolic HF
dificult HF cases
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Diuretics
Thiazides
Hydrochlorothiazide
Potassium-sparing diuretics
Spironolactone
amiloride
Loop diuretics
Frusemide
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Vasodilators
Nitrates
Nitroglycerine
Isosorbide dinitrate
Mononitrates
Nitroprusside
ACE inhibitor
ARB (Angiotensin receptor blocker)
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Acute heart failure
? Definition
? Etioloogy and mechanism
? Clinical picture
? Diagnosis
? treatment
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