The pulsatile cardiopulmonary bypass is useful from the point of minimizing the organ damage from extracorporeal circulation.
In this paper, we studied effect of pulsatile cardiopulmonary bypass on renal function.
Non-pulsatile flow delivered by a roller pump was used in 25 patients and pulsatile flow induced by PBP or PAD was utilized in the other 23 patients at the same mean flow rate.
Renal function study included urine volume, free water clearance, creatinine clearance and urea clearance. Blood and urine sumples were taken before, during and after bypass, and on the postoperative period.
Significant deference in urine volume was not found between two groups. Free water clearance was maintained excellently during and after bypass in pulsatile flow group. Creatinine clearance recovered immediately after surgery in pulsatile flow group.
It can be concluded that pulsatile cardiopulmonary bypass is more ben-efical on the renal performance during and after bypass.
