The rate of decline in resistance to anoxia of rabbits, dogs and guinea pigs from the onset of viability to adult life
The rate of decline in resistance to anoxia of rabbits, dogs and guinea pigs from the onset of viability to adult life
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DOI:
10.1152/ajplegacy.1944.140.5.609
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发表时间:
1944-02-01
影响因子:
--
通讯作者:
Webster, E
中科院分区:
文献类型:
--
作者:
Glass, HG;Snyder, FF;Webster, E
The present investigation was undertaken to determine how long newborn rabbits, dogs and guinea pigs can survive when breathing nitrogen instead of air. Embryologists have long recognized the fact that when deprived of oxygen, the tetus survived longer than the mother under similar circumstances. Certain previous investigations are of special interest. Le Gallois (l), in 1813, noted that in newborn rabbits, following decapitation, respiratory movements persisted for 15 minutes; in asphyxia by submersion, 27 minutes; after opening the thorax, 30 minutes; and following extirpation of the heart, 20 minutes. Thirty days after birth, the adult type of response was found and respiration ceased within 2 minutes.Paul Bert (2) observed in newborn rats the persistence of respiratory movements for 30 minutes during submersion in water. Twenty days after birth, respiration ceased in about l+ minutes. He also noted that cat litter mates submerged in water at 20 degrees survived 26 minutes, while at 3G degrees the time of survival was only ll# minutes.