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(Circulation. 1965;31:I-171.)
© 1965 American Heart Association, Inc.

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Comparison of Blood Flow During External and Internal Cardiac Massage in Man

LOUIS R. M. DEL GUERCIO M.D.¹; NEIL R. FEINS M.D.¹; JOSEPH D. COHN M.D.¹; RAMA P. COOMARASWAMY M.D.¹; STUART B. WOLLMAN M.D.¹; DAVID STATE M.D., PH.D.¹

¹ From the Department of Surgery of the Albert Einstein College of Medicine and the Bronx Municipal Hospital Center, Bronx, New York.

Cardiorespiratory variables measured during attempts at cardiac resuscitation in 11 patients are presented. These were obtained ten times during closed-chest massage and 15 times during open-chest massage. Three patients were studied during both techniques of resuscitation. Cardiac index and stroke index were significantly better with the internal method, and the mean circulation time was significantly shorter.