Effects of right ventricular failure on renal function during pneumatic left ventricular assist.
In an experiment dog model of acute biventricular failure, the effects of left ventricular (LV) assist on renal hemodynamics and function were evaluated. After the induction of severe cardiac failure by multiple ligation of the coronary arteries, LV assist with a 40 ml pneumatic pulsatile pump was initiated, and the aortic flow was maintained at control values. The right atrial pressure (RAP) rose to 21.3 mm Hg with the appearance of profound right ventricular (RV) failure. Renal arterial blood flow (RAF) decreased to about 60% of the control value after 2 h of LV assist. The urine volume decreased and renal function deteriorated progressively. RV assist decreased the RAP to 4.8 mm Hg, and the reduced RAF recovered. After 3 h of RV assist, the RAF returned to initial values and the urine volume increased, but renal function did not recover. Advanced biventricular failure with elevated RAP during LV assist reduced renal perfusion and impaired renal function and may be an indication for early RV assist.
Akamatsu
H
H
Department of Cardiothoracic Surgery, Tokyo Medical and Dental University, School of Medicine, Japan
Arai
H
H
Sakamoto
T
T
Suzuki
A
A
D000818:Animals; D001794:Blood Pressure / Q000502:physiology; D003326:Coronary Circulation / Q000502:physiology; D003331:Coronary Vessels / Q000601:surgery; D004195:Disease Models, Animal; D004285:Dogs; D006333:Heart Failure / Q000503:physiopathology*; D006353:Heart-Assist Devices; D006439:Hemodynamics / Q000502:physiology*; D007668:Kidney / Q000502:physiology*; D007677:Kidney Function Tests; D008026:Ligation; D009994:Osmolar Concentration; D012079:Renal Circulation / Q000502:physiology; D013318:Stroke Volume / Q000502:physiology; D016482:Urinalysis; D018487:Ventricular Dysfunction, Left / Q000503:physiopathology*; D016278:Ventricular Function, Right / Q000502:physiology