CVS HF Flashcards
Inability of the ventricle to contract normally
↑LV end diastolic volume (LVEDV)
↑LV end diastolic pressure (LVEDP)
↑systemic vascular resistance
Ejection fraction (EF) is < 40%
SYSTOLIC FAILURE
Inability of the ventricle to relax and fill normally
↓compliance - impaired LV relaxation/recoil or increase stiffness
increase LV end diastolic pressure (LVEDP)
normal EF, normal LV end diastolic volume (LVEDV)
EF is > 50%
DIASTOLIC FAILURE
IHD, dilated cardiomyopathy, MI
SYSTOLIC FAILURE
Myocardial hypertrophy: HTN withLVH, hypertrophic CMP
Myocardial infiltration: amyloidosis, sarcoidosis, hemochromatosis, scleroderma
Inflammatory: constrictive pericarditis
DIASTOLIC FAILURE
Hx: Exertional dyspnea, orthopnea, paroxysmal nocturnal dyspnea*, nocturnal cough (+ pink, frothy sputum)
PE: Dullness on percussion, crackles, wheeze (‘cardiac asthma’)
LVF
Pulmonary congestion/ edema
Pulmonary edema + peripheral hypoperfusion
ACUTE HEART FAILURE
Venous congestion
Develops or progresses slowly
CHRONIC HEART FAILURE
Excessive preload – can cause ventricular dilation
Mitral regurgitation
Fluid overload: renal failure
Chronic excessive afterload - can cause ventricular hypertrophy
Aortic stenosis
HTN
Heart disease present, but no limitation of activity
No undue dyspnea from ordinary activity
Functional Class I
Slight limitation of physical activity
Comfortable at rest; dyspnea with ordinary physical activity
Functional Class II
Marked limitation of physical activity
Comfortable at rest, but less than ordinary activity causes dyspnea
Functional Class III
Dyspnea at rest
All types of activities cause discomfort
Functional Class IV