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A Prospective Study of 52 Patients

George L. Hicks, MD; Hans H. J. Zwart, MD; Richard A. DeWall, MD

Arch Surg. 1979;114(11):1285-1287.

Abstract
• Controversy continues about the oxygenator preferable for cardiopulmonary bypass (CPB). This prospective study was undertaken in 52 patients undergoing coronary bypass surgery. Oxygenators were alternated each case between model Q-100, Bentley Laboratories Inc, Irvine, Calif, and Travenol Membrane Oxygenator (TMO), Travenol Laboratories Inc, Deerfield, Ill. The Q-100 group required higher CPB O₂ flows, but Po₂ levels during CPB were similar for both groups. Heparin sodium dosage and activated clotting, bleeding, prothrombin, and partial thromboplastin times were identical in both groups. Blood loss and platelet reduction after CPB were also similar. Postoperative complications in the Q-100 group included one myocardial infarction, and one neurological problem. The TMO group had no myocardial infarctions and one neurological problem. The membrane oxygenator took nine minutes longer to set up and was $63 more expensive to purchase. Blood trauma during CPB was less with the membrane oxygenator (lower plasma hemoglobin level), but we conclude that both oxygenators performed adequately during clinical use in open heart surgery.

(Arch Surg 114:1285-1287, 1979)

Author Affiliations
From the Division of Cardiothoracic Surgery, Wright State University, Kettering Medical Center, Dayton, Ohio.

Footnotes
Accepted for publication Aug 6, 1979.

Read before the 27th scientific meeting of the International Cardiovascular Society, Nashville, Tenn, June 28, 1979.

Reprint requests to 111 W First St, Suite 918, Dayton, OH 45402 (Dr Hicks).

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