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Joseph Roshe, MD

AMA Arch Surg. 1973;107(2):166-168.

Abstract
Recently, interest has been generated in femoral vein to femoral artery bypass with a membrane oxygenator for prolonged acute reversible pulmonary insufficiency states. The present study compared oxygen tension in the femoral (FAPo₂) and brachial (BAPo₂) arteries and right ventricle (RV) at various femoral-to-femoral bypass flows.

Respiratory distress was induced by creating bilateral pneumothorax and total lung collapse in 12 dogs.

Blood gas determinations made before and after respiratory distress and at various flow rates during supportive femoral-femoral bypass indicated wide differences in mean FAPo2 and BAPo₂: 110 mm Hg at maximum bypass flows, and 151 mm Hg at minimum flows. In six dogs, BAPo₂ fell an average of 22 mm Hg in going from maximum to minimum flow rates; in six dogs BAPo₂ rose an average of 24 mm Hg; RVPo₂ changed very little.

Author Affiliations
Toledo, Ohio

From the Department of Surgery, Section of Thoracic and Cardiovascular Surgery, St. Vincent Hospital and Medical Center, and the Medical College of Ohio, Toledo.

Footnotes
Accepted for publication March 30, 1973.

Read before the 30th annual meeting of the Central Surgical Association, Toronto, Feb 22, 1973.

Reprint requests to 4235 Secor Rd, Toledo, OH 43623.

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