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Artzjicid â AND PETER V. KARPOVICH, CREIGHTON J. HALE DORE L. BAILEY. From the Department of Physiology, CoZlege, Springfield, Massachusetts THEO- Springfield HAT IS THE BEST METHOD of manual ? In the United States the answer would be the Schafer; in Holland, the Silvester; and in Denmark, the Nielsen. Since these 3 methods, or their combinations, are practically the only ones in use, they must be either equally good, or one of them is the best. The efforts to settle this question experimentally either have given inconclusive results, or have had convincing value only on a partisan basis. Just to cite one illustration, while European investigators praised the Silvester method as the best, Burton Opitz (I) experimenting on young men in the United States, was unable to obtain any adequate pulmonary ventilation by that method and gave up trying. The main reason for the failure to obtain clear cut experimental evidence has been the inadequacy of experimental procedures. Apneic victims, who have been supposed to remain passive while has been administered to them, often have not been completely passive. In addition, the Hering-Breuer reflex has interfered by reducing the amount of lung ventilation obtained by the more effective
Journal of Applied Physiology – The American Physiological Society
Published: Dec 1, 1951
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