There are many different ways to categorize<unk>  , which includes whether the abnormality is due to insufficient contraction (systolic dysfunction); or due to insufficient relaxation of the<unk>  (diastolic dysfunction), or to both; whether the problem is primarily increased venous back pressure (preload), or failure to supply adequate arterial perfusion (afterload); whether the abnormality is due to low cardiac output with high systemic vascular resistance or high cardiac output with low vascular resistance (low-output<unk>  failure vs. high output cardiac failure); degree of functional impairment conferred by the abnormality (as reflected in the New York<unk>  Association Functional Classification); and the degree of coexisting illness: i.e.<unk>  failure/systemic hypertension,<unk>  failure/pulmonary hypertension,<unk>  failure/diabetes,<unk>  failure/chronic renal failure, etc.
Right heart failure classification
Congestive heart failure classification
Chronic obstructive pulmonary disease classification
Pulmonary embolism classification
Pulmonary edema classification
Pulmonary hypertension classification
Chest pain classification
Heart murmur classification