Cochrane · systematic review · CD012033

Perioperative intravenous ketamine for acute postoperative pain in adults

Brinck, ECV, Tiippana, E, Heesen, M, et al. · Cochrane Database of Systematic Reviews · 2018 · 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
6
current version
GRADE rated
6
No studies
0
Included studies
NR
No studies 0 · 0%Ungraded 0 · 0%Very low 1 · 16.7%Low 0 · 0%Moderate 2 · 33.3%High 3 · 50%

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

Perioperative intravenous ketamine compared to placebo for acute postoperative pain in adults

Population: adults undergoing any type of surgery
6 questions
OutcomeEffectEvidenceStatus / GRADE
Opioid consumption(mg morphine equivalents)
Perioperative intravenous ketamine vs placebo
no estimate extracted65 studies · 4004 participantsModerate
Downgraded: publication bias
Pain intensity(0‐100 mm VAS. 7
Perioperative intravenous ketamine vs placebo
no estimate extracted82 studies · 5004 participantsHigh
Time to first request for analgesia/trigger of PCA(minutes)
Perioperative intravenous ketamine vs placebo
no estimate extracted31 studies · 1678 participantsModerate
Downgraded: publication bias
Hyperalgesia(cm2)
Perioperative intravenous ketamine vs placebo
no estimate extracted7 studies · 333 participantsVery low
CNS adverse events
Perioperative intravenous ketamine vs placebo
no estimate extracted105 studies · 6538 participantsHigh
Postoperative nausea and vomiting
Perioperative intravenous ketamine vs placebo
no estimate extracted95 studies · 5965 participantsHigh