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The Annals of Thoracic Surgery, Vol 23, 421-428, Copyright © 1977 by The Society of Thoracic Surgeons

ARTICLES

Extracorporeal membrane oxygenation for massive pulmonary thromboembolism

DJ Krellenstein, CW Bryan-Brown, AO Fayemi, SA Geller, J Hanns, S Barron and EC Peirce 2d

This study was undertaken to determine whether extracorporeal membrane oxygenation (ECMO) could modify the effects of massive lethal thromboembolism and prevent death. Twenty anesthetized dogs were prepared for venoarterial perfusion with a demand pump and membrane lung and were perfused slowly for 1 1/2 hours to lessen homologous blood shock; 1 ml per kilogram of 24-hour-old tantalum-impregnated thrombus was injected intravenously. The dogs had profound systemic hypotension with an elevated mean pulmonary artery pressure (62.9 +/- 4.5 mm Hg) immediately after embolization. Control animals generally died within 15 minutes. Four of the 10 ECMO-supported animals lived for six days, at which time they were restudied and killed. Not only can ECMO maintain an animal that would otherwise die quickly of massive pulmonary thromboembolism, but such support, even though temporary, can greatly improve the chances of survival.