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Alan T. Marty, MD; John Prather, PhD, MD; Jack M. Matloff, MD; James Schauble, MD

AMA Arch Surg. 1973;107(1):21-25.

Abstract
Twenty-six patients were subjected to large intraoperative shifts in plasma colloid oncotic pressure (COP) by dilutional cardiopulmonary bypass, salt poor albumin (SPA), and/or diuretic therapy. During bypass, COP fell 44%, to a level that leads to pulmonary edema in vitro. Intraoperative changes in COP, induced by the postbypass use of SPA and diuretics, were associated with increased COP and urine output, but did not correlate with changes in alveolar-arterial oxygen tension gradients (A-a Po₂). We conclude that therapy designed to change COP has a limited role and does not affect intraoperative pulmonary function as measured by A-a Po₂ gradients.

Author Affiliations
Los Angeles; San Diego, Calif; Los Angeles; San Diego, Calif

From the departments of thoracic, cardiac, and vascular surgery (Drs. Marty and Matloff), Cedars of Lebanon Hospital, Los Angeles; and bioengineering and anesthesia (Drs. Prather and Schauble), University of California, San Diego.

Footnotes
Accepted for publication March 2, 1973.

Read before the annual meeting of the Southern California Chapter of the American College of Surgeons, Newport Beach, Calif, Jan 20, 1973.

Reprint requests to Cedars of Lebanon Hospital, 4833 Fountain Ave, Los Angeles 90029 (Dr. Marty).

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ABSTRACT