Foetal Blood Sampling. Practical Approach to Management of Foetal Distress

Coltart, T. M.; Trickey, N. R. A.; Beard, R. W.

doi:10.1136/bmj.1.5640.342

Cited by 29 publications

(11 citation statements)

References 10 publications

(1 reference statement)

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“…Lack of clear inclusion criteria and the potential for cointervention may have been sources of bias. Confounders such as preterm delivery and congenital anomalies were addressed in only one study [20], …”

Section: Methodological Reviewmentioning

confidence: 99%

Association between Indicators of Perinatal Asphyxia and Adverse Outcome in the Term Infant: A Methodological Review

Bryce¹,

Halperin

Sinclair

1985

Neuroepidemiology

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There are conflicting opinions about the significance of 5 perinatal findings felt to be indicators of asphyxia (meconium staining of the amniotic fluid, abnormal fetal heart rate patterns, acidotic fetal scalp blood gases, low Apgar scores, and acidotic cord blood gases). A review of the literature was undertaken to determine the strength of association of each of these findings with adverse outcomes. Although all studies contained methodological problems, these indicators were found to have strong associations with one or more adverse outcomes such as perinatal death, low Apgar scores or cerebral palsy. The strength of the association (relative risk) was found to vary inversely with the prevalence of the outcome.

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Section: Methodological Reviewmentioning

confidence: 99%

Association between Indicators of Perinatal Asphyxia and Adverse Outcome in the Term Infant: A Methodological Review

Bryce¹,

Halperin

Sinclair

1985

Neuroepidemiology

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“…Those suffering from some condition known to be associated with an increased risk of intrapartum fetal asphyxia. The results of this study (Coltart et al, 1969) showed that before the onset of labour the pH of the fetus that subsequently becomes asphyxiated is always within normal limits before the onset of labour. Fifteen per cent of fetuses presenting with clinical fetal distress were found to have a pH of 7.25 or less, and clinical signs of fetal distress nearly always preceded fetal acidaemia.…”

Section: Clinical Application Offetal Blood Samplingmentioning

confidence: 66%

Fetal Acidosis

Beard

1969

Ann Clin Biochem

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“…According to Coltart, Trickey and Beard, (1969) it is unlikely that this baby would have been acidotic in the absence of clinical fetal distress, but operative delivery might not have altered the outcome, since a survey of severe pre-eclampsia in Aberdeen in 1969 (Duffus, unpublished) showed that in 23 cases the perinatal mortality rate before 34 weeks gestation was the same for vaginal and for operative delivery. Labour was induced at 33 weeks gestation in this patient because of severe preeclampsia.…”

Section: Resultsmentioning

confidence: 99%

“…Regarding Astrup analysis in the absence of fetal distress, Coltart, Trickey and Beard (1969) reviewed 69 obstetrically at risk patients in whom there was no fetal distress and in none of them was there evidence of fetal acidaemia. Although a low pH may precede clinical distress in a few cases, they concluded that in the majority of cases there is no need to do scalp sampling until fetal distress occurs.…”

Section: Discussionmentioning

confidence: 99%

An Assessment of the Value of Fetal Scalp Blood Sampling

Farr

1970

BJOG

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The value of fetal scalp sampling in reducing perinatal mortality, birth asphyxia and Caesarean section rate was assessed by a retrospective study of 2638 booked patients who were delivered in 1966. By using this technique it is possible that the perinatal mortality rate might be reduced from 15.9 to 15.2 per thousand, i.e., by 2 deaths per year. The incidence of birth asphyxia might be improved, but for this to be significant all patients would require repeated monitoring during labour, since about 40 per cent of asphyxiated babies showed no evidence of clinical fetal distress during labour. Since clinical fetal distress was the main reason for Caesarean section in only 18 booked patients, little experience would be gained in the technique of scalp blood sampling and the value of the results would be suspect, and it is likely that in less than half of these cases would operative delivery be prevented.

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Foetal Blood Sampling. Practical Approach to Management of Foetal Distress

Cited by 29 publications

References 10 publications

Association between Indicators of Perinatal Asphyxia and Adverse Outcome in the Term Infant: A Methodological Review

Association between Indicators of Perinatal Asphyxia and Adverse Outcome in the Term Infant: A Methodological Review

Fetal Acidosis

An Assessment of the Value of Fetal Scalp Blood Sampling

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