Tissue surface pH monitoring during reduced blood flow: Metabolic implications and sources of error

Ef, La Gamma; An, Krauss; Pa, Auld

doi:10.1515/jpme.1982.10.3.174

Cited by 5 publications

(1 citation statement)

References 12 publications

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“…In addition, continuous tissue surface pH recordings showed specific variations that were correlated with fetal heart rate patterns, but did not necessarily bear a direct relationship to fetal blood pH as shown in adult animals. 5 To evaluate the trends in these interactions in the fetus further, we have repeated and extended the initial observations during intermittent and progressive reductions in uterine blood flow as a model of progressive intrauterine fetal distress or asphyxia.…”

Section: Introductionmentioning

confidence: 99%

Trends in Continuous Metabolic Monitoring During Experimental Fetal Distress

Mm¹,

Ef²

1984

Amer J Perinatol

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Intermittent, progressive maternal aortic occlusions were used to produce fetal distress in the fetuses of six pregnant dogs at term. Fetal heart rate and fetal tissue surface pH were continuously recorded and were compared to fetal blood pH, pCO2, pO2 and lactic acid values determined from intermittent sampling. Baseline fetal heart rate was an insensitive indicator of fetal blood pH, tissue surface pH, or of fetal blood lactic acid concentrations. "Delayed" decelerations in fetal heart rate following an occlusive episode were uniformly produced after minimal stress and also did not correlate well with these variables. On the other hand, fetal blood lactic acid concentrations remained elevated even after occlusive episodes were discontinued and other variables had returned to baseline values.

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Section: Introductionmentioning

confidence: 99%