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The Annals of Thoracic Surgery, Vol 21, 284-290, Copyright © 1976 by The Society of Thoracic Surgeons

ARTICLES

A new method of external cardiac massage to improve diastolic augmentation and prolong survival time

T Ohomoto, I Miura and S Konno

Experiments were performed on 50 dogs to determine the reason for unsatisfactory survival rates following closed-chest cardiac massage and to help develop new means for increasing survival following acute myocardial infarction and other causes of cardiac arrest. A new technique, named the countermassage method, was subsequently developed. Coronary and carotid flows after use of countermassage following cardiac arrest were increased 1.4 and 2 times, respectively, in contrast to flows obtained during manual closed-chest cardiac massage. These increases brought flows up to normal levels. We also tried to determine whether survival could be extended by this method to facilitate clinical treatment such as defibrillation or placing a temporary pacemaker catheter under fluoroscopic control, which are hard to accomplish during the brief time permitted by conventional closed- chest cardiac massage.