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Experimental study demonstrates right ventricular infarction following coronary vein ligation in canines, indicating superficial venous drainage is essential for myocardial survival.
Ligation of the coronary sinus and all the visible anterior cardiac veins led to death in 5 out of 24 dogs. In 15 out of 17 of these dogs coming to autopsy, varying degrees of infarction of the right ventricle were found. The work emphasizes the importance of the superficial venous system in the drainage of the myocardium and reveals the inadequacy of the intramural system when the latter is forced to assume the entire outflow load.
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McAllister et al. (1950) studied this question.
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