VARIATIONS IN ASPHYXIAL GASPING WITH FETAL AGE IN LAMBS AND GUINEA‐PIGS

G. S. Dawes; H. E. Fox; R. T. Richards

doi:10.1113/expphysiol.1972.sp002144

VARIATIONS IN ASPHYXIAL GASPING WITH FETAL AGE IN LAMBS AND GUINEA‐PIGS

G. S. Dawes, H. E. Fox, R. T. Richards

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The time to the last gasp after tying the umbilical cord was measured in fetal lambs and guinea‐pigs of different gestation ages; body temperature was maintained. At two‐thirds of term the times to the last gasp were slightly but significantly greater than at full term in both species. But at about 0·34 (lamb) and 0·46 of term (guinea‐pig) the times to the last gasp were very much less than in mature fetuses. In lambs a third of the way through gestation the short time to the last gasp could not be attributed to hypoglycaemia, circulatory collapse or neuro‐muscular failure. The results suggest that at this age the respiratory centre may be more susceptible to asphyxia, yet post‐asphyxial recovery occurred rapidly.

Original language	English (US)
Pages (from-to)	131-138
Number of pages	8
Journal	Quarterly Journal of Experimental Physiology and Cognate Medical Sciences
Volume	57
Issue number	2
DOIs	https://doi.org/10.1113/expphysiol.1972.sp002144
State	Published - Apr 7 1972
Externally published	Yes

ASJC Scopus subject areas

Physiology

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10.1113/expphysiol.1972.sp002144

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title = "VARIATIONS IN ASPHYXIAL GASPING WITH FETAL AGE IN LAMBS AND GUINEA‐PIGS",

abstract = "The time to the last gasp after tying the umbilical cord was measured in fetal lambs and guinea‐pigs of different gestation ages; body temperature was maintained. At two‐thirds of term the times to the last gasp were slightly but significantly greater than at full term in both species. But at about 0·34 (lamb) and 0·46 of term (guinea‐pig) the times to the last gasp were very much less than in mature fetuses. In lambs a third of the way through gestation the short time to the last gasp could not be attributed to hypoglycaemia, circulatory collapse or neuro‐muscular failure. The results suggest that at this age the respiratory centre may be more susceptible to asphyxia, yet post‐asphyxial recovery occurred rapidly.",

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VARIATIONS IN ASPHYXIAL GASPING WITH FETAL AGE IN LAMBS AND GUINEA‐PIGS

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