Congestive Heart Failure (CHF)
Congestive heart failure is pump failure of the heart.
Congestive heart failure is divided into:
- Left sided heart failure
- Right sided heart failure
Left-Sided Heart Failure
Risk factors for left sided heart failure include:
- Myocardial infarction
- Ischemia
- Hypertension
- Dilated cardiomyopathy
- Restrictive cardiomyopathy
Clinical features of left sided heart failure include:
- Pulmonary congestion
- Dyspnea
- Paroxysmal nocturnal dyspnea (because of increased venous return when lying flat)
- Orthopnea
- Cyanosis
Small, congested capillaries can burst, resulting in intra alveolar hemorrhage.
Left sided heart failure histology shows marked by hemosiderin-laden macrophages (‘heart-failure’ cells).
Reduced flow to kidneys results in activation of the renin-angiotensin system.
Fluid retention exacerbates congestive heart failure.
ACE inhibitor therapy is the mainstay of treatment.
Right-Sided Heart Failure
Causes of right sided heart failure include:
- Left sided heart failure (most common reason)
- Chronic lung disease
- Left-to-right shunt
Clinical features of right sided heart failure are secondary to congestion, and include:
- Edema
- Jugular venous distension
- Hepatosplenomegaly







