• K Nandate, K Muranaka, K Shinohara, K Ishida, H Ishida, K Seo, and H Takeshita.
• Department of Anesthesiology, Kokura Memorial Hospital, 1-1 Kifune-machi, Kokurakita-ku, 802, Kitakyushu, Japan.
• J Anesth. 1997 Jun 1;11(2):117-20.

AbstractWe retrospectively reviewed the records of 250 consecutive patients undergoing coronary artery bypass graft surgery (CABG) from January 1994 through January 1996 to determine the incidence of persistent postoperative neurological dysfunction after CABG and to compare normothermic and moderate hypothermic cardiopulmonary bypass (CPB). Normothermic CPB was used in 128 patients (36°-37°C) and hypothermic CPB (27°-28°C) in 122 patients. Postoperative neurological dysfunction included focal motor deficits, delayed recovery of consciousness (>24h) after surgery, and seizures within 1 week postoperatively. Persistent neurological dysfunction was diagnosed if complete resolution had not occurred within 10 days of surgery. The incidence of persistent postoperative neurological dysfunction was 4.1% in the hypothermic CPB group and 2.3% in the normothermic CPB group. There were no statistically significant differences between the two groups (P=NS). These results suggest that normothermic CPB did not increase the incidence of persistent postoperative neurological dysfunction compared to hypothermic CPB.

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