Natural Temperature Decrease Extracorporeal Circulation for Cases at High Risk of Brain Damage

(Department of Cardiovascular Surgery, Chugoku Rosai Hospital, Cerebro-Cardiovascular Center, Kure, Japan)

Saihou Hayashi Shuji Kohata Yasushi Hashimoto
Clinical cases of normothermic extracorporeal circulation (ECC) are increasing, but the possibility of brain damage is not clear. In emergencies, the brain protective effects of mild (33-34) hypothermic therapy have been clearly confirmed. Natural Temperature decrease ECC was conducted in this study, hoping to obtain the advantages of both normothermic ECC and brain protection by mild hypothermia. These were 12 cases at high risk of brain damage (10 cases of brain infarction and 2 cases of severe carotid artery stenosis). In all cases, coronary artery bypass grafting operation with natural temperature decrease ECC was performed. The average laryngeal temperature dropped to 33.0}0.3. There was no brain infarction or ICU syndrome. Evaluation of post-operative brain condition by the patients themselves and their families was good. The possibility of natural temperature decrease ECC for high risk cases of brain damage was demonstrated.
@Jpn. J. Cardiovasc. Surg. 29: 254-259 (2000)