portal flow patterns suggestive of severe congestive heart failure include a monophasic forward flow with peak velocity in ventricular diastole and gradual diminution of velocity throughout ventricular systole ( n = 5 ) , a reversed flow velocity in ventricular systole ( n = 3 ) , and vena cava-like biphasic forward velocity peaks during each cardiac cycle ( n = 2 ) .
C0018802
congestive heart failure
C0018787
cardiac