40-50%)High-Output States* Coronary artery disease:- Myocardial infarction- Myocardial ischemia* Chronic pressure overload:- Hypertension- Obstructive valvular disease* Chronic volume overload:- Regurgitant valvular disease- Intracardiac (left-to-right) shunting- Extracardiac shuntingQ* Chronic lung disease:- Cor pulmonaleQ- Pulmonary vascular disorders* Non-ischemic dilated cardiomyopathy:- Familial/genetic disorders- Infiltrative disorders* Toxic/drug-induced damage:- Metabolic disorder- Viral* Chagas' disease* Disorders of rate & rhythm:- Chronic bradyarrhythmias- Chronic tachyarrhythmias* Pathologic hypertrophy:- Primary (hypertrophic cardiomyopathies)- Secondary (hypertension)* Aging* Restrictive cardiomyopathy:- Infiltrative disorders (amyloidosis, sarcoidosis)- Storage diseases (hemo-chromatosis)* Fibrosis* Endomyocardial disorders* Metabolic disorders:- ThyrotoxicosisQ* Nutritional disorders (beriberi)0* Excessive blood flow requirements:- Systemic AV shunting0- Chronic anemia0">