J.Jpn. Surg. Soc.. 87(9): 1021-1024, 1986

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Report on the annual meeting

A TRIAL OF BLOOD CONSERVATION IN AC BYPASS SURGERY
－EXPERIENCE IN ASAHI MEDICAL PLASMAFO-AP-08H AND AUTO BLOOD CONCENTRATOR FOR POST-BYPASS HEMOCONCENTRATION－

In order to conserve the amount of blood transfusion in AC bypass surgeries which comprise 58.8% of our total open heart procedures (245 patients out of 417 operated between Jan. 1984 and Dec. 1985), we used Asahi Medical Plasmaflo-AP-08H and newly designed Auto Blood Concentrator.
An average of 782ml of concentrted blood with hematocrit of 43.4% was retransfused to the patients immediately coming off of cardio-pulmonary bypass.
In this way conservation of about 31.5% of blood transfusion was theoretically possible. By this method, along with other precautions such as utilization of non-blood priming of cardio-pulmonary bypass, membrane oxygenators and meticulous surgical technique, it was possible to perform opertions without using blood transfusion in 76 patients out of 245 (31.0%).
Multivariate logistic regression analysis of factors revealed preoperative hemoglobin value as the best contributor of possibility of non-blood transfusion surgery, followed by cardiopulmonary bypass time, amount of chest tube blood drainage in the first 12 hours in ICU, time for hemostasis in operating room and patient’s body weight.
Comparison of post operative clinical course of 76 non-transfused group and 169 transfused group did not reveal any significant difference.

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