Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

93 questions · 103 findings · 11 reviews

No studies found 18 · 17.5%GRADE not reported 8 · 7.8%Very low 28 · 27.2%Low 28 · 27.2%Moderate 15 · 14.6%High 6 · 5.8%

Intervention not reported

Proportion of maternal participants with desaturation1 · low‐risk term pregnant women undergoing elective caesarean section under regional anaesthesia

The review found no eligible studies for this question.

1 finding from 1 review

Intervention not reported

Mean maternal arterial oxygen tension (mm Hg) (PaO2) · low‐risk term pregnant women undergoing elective caesarean section under regional anaesthesia
1 finding from 1 review

Intervention not reported

Mean maternal oxygen saturation (%) · low‐risk term pregnant women undergoing elective caesarean section under regional anaesthesia
1 finding from 1 review

Intervention not reported

Mean oxygen tension (mm Hg) in umbilical artery (UaPO2) · low‐risk term pregnant women undergoing elective caesarean section under regional anaesthesia
1 finding from 1 review

Intervention not reported

Mean oxygen tension (mm Hg) in umbilical vein (UvPO2) · low‐risk term pregnant women undergoing elective caesarean section under regional anaesthesia
1 finding from 1 review

Combined spinal‐epidural vs high‐dose spinal

Number of women requiring a repeat regional block or a general anaesthetic as a result of failure to establish adequate initial blockade · women undergoing caesarean section

Combined spinal‐epidural showed no clear difference in number of women requiring a repeat regional block or a general… compared with high‐dose spinal (low certainty).

1 finding from 1 review

Combined spinal‐epidural vs low‐dose spinal

Number of women requiring a repeat regional block or a general anaesthetic as a result of failure to establish adequate initial blockade · women undergoing caesarean section

Combined spinal‐epidural showed no clear difference in number of women requiring a repeat regional block or a general… compared with low‐dose spinal (low certainty).

1 finding from 1 review