title: Pulsus alternans. Echocardiographic evidence of reduced venous return and alternating end-diastolic fiber length as causative factors.
mesh_terms: D000328:Adult; D001021:Aortic Valve / Q000502:physiology; D001794:Blood Pressure; D003187:Compliance; D003971:Diastole; D004452:Echocardiography; D006349:Heart Valve Diseases / Q000209:etiology*; D006801:Humans; D008297:Male; D009200:Myocardial Contraction; D011674:Pulse; D014680:Veins / Q000503:physiopathology