<prompt> Hyperdynamic circulation is seen in all except:AnemiaBeriberiCor pulmonaleAV fistula  <response>: Ans. c. Cor Pulmonale Ref: Harrison 19e p1501, Harrison 18e p1901Hyperdynamic circulation is seen in anemia, beriberi AV fistula, but not in Cor pulmonale.Conditions that lead to a high cardiac output e.g.. arteriovenous fistula, anemia are seldom responsible for the development of HF in a normal heart: however, in the presence of underlying structural heart disease, these conditions can lead to overt HF. --Harrison 19e p1501Etiologies of Heart FailureDepressed Ejection Fraction 40Preserved Ejection Fraction 40-50High-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:- Familialgenetic disorders- Infiltrative disorders Toxicdrug-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 beriberi0 Excessive blood flow requirements:- Systemic AV shunting0- Chronic anemia0 