Cochrane · systematic review · CD006161
Supplemental oxygen for caesarean section during regional anaesthesia
Chatmongkolchart, S, Prathep, S · Cochrane Database of Systematic Reviews · 2016 · Cochrane Library
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
7
current version
GRADE rated
6
No studies
1
Included studies
NR
No studies 1 · 14.3%Ungraded 0 · 0%Very low 4 · 57.1%Low 2 · 28.6%Moderate 0 · 0%High 0 · 0%
Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.
Questions and results
Current version onlyComparison
Population: low‐risk term pregnant women undergoing elective caesarean section under regional anaesthesia
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Apgar scores at 1 minute | no estimate extracted | 6 studies · 519 participants | Low Downgraded: risk of bias, inconsistency |
Apgar scores at 5 minutes | no estimate extracted | 6 studies · 519 participants | Low Downgraded: risk of bias, inconsistency |
Proportion of maternal participants with desaturation1 | no estimate extracted | NR | No studies |
Mean maternal arterial oxygen tension (mm Hg) (PaO2) | no estimate extracted | 6 studies · 241 participants | Very low Downgraded: risk of bias, inconsistency |
Mean maternal oxygen saturation (%) | no estimate extracted | 3 studies · 209 participants | Very low Downgraded: risk of bias, inconsistency |
Mean oxygen tension (mm Hg) in umbilical artery (UaPO2) | no estimate extracted | 8 studies · 504 participants | Very low Downgraded: risk of bias, inconsistency |
Mean oxygen tension (mm Hg) in umbilical vein (UvPO2) | no estimate extracted | 10 studies · 683 participants | Very low Downgraded: risk of bias, inconsistency |
Comparison
Population: low‐risk term pregnancy women undergoing elective caesarean section under regional anaesthesia
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Apgar scores at 1 minute | no estimate extracted | 5 studies · 449 participants | Low Downgraded: inconsistency |
Apgar scores at 5 minutes | no estimate extracted | 5 studies · 449 participants | Low Downgraded: risk of bias, imprecision |
Mean maternal arterial oxygen tension (mm Hg) (PaO2) | no estimate extracted | 6 studies · 241 participants | Very low Downgraded: risk of bias, imprecision, inconsistency |
Maternal oxygen saturation (%) | no estimate extracted | 3 studies · 209 participants | Very low Downgraded: risk of bias, imprecision, inconsistency |
Mean oxygen tension (mm Hg) in umbilical artery (UaPO2) | no estimate extracted | 8 studies · 504 participants | Low Downgraded: risk of bias, imprecision, inconsistency |
Mean oxygen tension (mm Hg) in umbilical vein (UvPO2) | no estimate extracted | 10 studies · 683 participants | Low Downgraded: risk of bias, imprecision, inconsistency |