There are several classification schemes used to characterize the pathophysiology of<unk><unk>  as either systolic vs diastolic; left vs right; or low output vs high output.  The anatomic structure underlying the disease process is often characterized as well.  The causes of<unk><unk>  are also often characterized by their chronicity (acute/decompensated or chronic).
Congestive heart failure causes
Endocarditis causes
Cyanosis causes
Airway obstruction causes
Pulmonary edema causes
Cirrhosis causes
Pneumonia causes
Chronic renal failure causes