Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

864 questions · 895 findings · 140 reviews · Headline outcomes only

No studies found 202 · 22.6%GRADE not reported 53 · 5.9%Very low 227 · 25.4%Low 254 · 28.4%Moderate 131 · 14.6%High 28 · 3.1%

Remifentanil (PCA) vs remifentanil (continuous IV)

Maternal respiratory depression (< 8 breaths/min) · women in labour with planned vaginal delivery

Remifentanil (PCA) may leads to lower maternal respiratory depression (< 8 breaths/min) compared with remifentanil (continuous IV) (low certainty).

1 finding from 1 review

Fetal electrocardiogram (ECG) (ST analysis) plus cardiotocography (CTG) vs CTG alone

Caesarean section ‐ ST analysis · Pregnant women (and their fetuses) in labour, with a perceived need for continuous electronic fetal heart rate monitoring

Fetal electrocardiogram (ECG) (ST analysis) plus cardiotocography… showed no clear difference in caesarean section ‐ ST analysis compared with CTG alone (high certainty).

1 finding from 1 review

Fetal electrocardiogram (ECG) (ST analysis) plus cardiotocography (CTG) vs CTG alone

Cord pH less than 7.05 and base deficit greater than 12 mmol/L ‐ ST analysis · Pregnant women (and their fetuses) in labour, with a perceived need for continuous electronic fetal heart rate monitoring

Fetal electrocardiogram (ECG) (ST analysis) plus cardiotocography… showed no clear difference in cord pH less than 7.05 and base deficit greater than 12 mmol/L ‐ ST… compared with CTG alone (moderate certainty).

1 finding from 1 review

Fetal electrocardiogram (ECG) (ST analysis) plus cardiotocography (CTG) vs CTG alone

Neonatal encephalopathy ‐ ST analysis · Pregnant women (and their fetuses) in labour, with a perceived need for continuous electronic fetal heart rate monitoring

Fetal electrocardiogram (ECG) (ST analysis) plus cardiotocography… showed no clear difference in neonatal encephalopathy ‐ ST analysis compared with CTG alone (high certainty).

1 finding from 1 review

Fetal electrocardiogram (ECG) (ST analysis) plus cardiotocography (CTG) vs CTG alone

Fetal blood sampling ‐ ST analysis · Pregnant women (and their fetuses) in labour, with a perceived need for continuous electronic fetal heart rate monitoring

Fetal electrocardiogram (ECG) (ST analysis) plus cardiotocography… leads to lower fetal blood sampling ‐ ST analysis compared with CTG alone (high certainty).

1 finding from 1 review

Fetal electrocardiogram (ECG) (ST analysis) plus cardiotocography (CTG) vs CTG alone

Instrumental vaginal birth · Pregnant women (and their fetuses) in labour, with a perceived need for continuous electronic fetal heart rate monitoring

Fetal electrocardiogram (ECG) (ST analysis) plus cardiotocography… leads to lower operative vaginal delivery ‐ ST analysis compared with CTG alone (high certainty).

1 finding from 1 review