cardiovascular disorders
Heart Failure (HF)
Etiology of Heart Failure
Both cardiac and systemic factors can impair cardiac performance and cause or aggravate heart failure. Type Type Examples Examples Cardiac Cardiac Myocardial damage Overview of Cardiomyopathies None Acute Myocardial Infarction (MI) None Myocarditis None Some chemotherapy drugs Valvular disorders Aortic Stenosis None Mitral Regurgitation None Tricuspid Regurgitation None Arrhythmias Bradyarrhythmias Tachyarrhythmias Conduction defects Atrioventricular Block None Bundle Branch Block and Fascicular Block None Reduced substrate availability (eg, of free fatty acids or glucose) Ischemia Infiltrative or matrix disorders Amyloidosis None Chronic fibrosis (eg, Systemic Sclerosis ) Hereditary Hemochromatosis None Systemic Systemic Disorders that increase demand for CO Etiology of Anemia None Hyperthyroidism None Paget Disease of Bone None Disorders that increase resistance to output (afterload) Aortic Stenosis None Hypertension None AV=atrioventricular; CO=cardiac output. 