title: Loss of prazosin effect in severe chronic CHF.
mesh_terms: D000328:Adult; D000368:Aged; D001510:Bed Rest; D002908:Chronic Disease; D004361:Drug Tolerance; D004452:Echocardiography; D005260:Female; D006333:Heart Failure / Q000188:drug therapy*; D006439:Hemodynamics / Q000187:drug effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011224:Prazosin / Q000627:therapeutic use*; D011799:Quinazolines / Q000627:therapeutic use*
chemical_list: D011799:Quinazolines; D011224:Prazosin