What do systematic reviews say?

Warmed, or warmed and humidified CO2 vs unwarmed and unhumidified CO2

Warmed, or warmed and humidified CO2 showed no clear difference in incidence of STP within 24‐48 hours post‐operatively compared with unwarmed and unhumidified CO2 (low certainty).

• Interventions to reduce shoulder pain following gynaecological laparoscopic procedures 2019 · Cochrane Headline outcomes only
  OR 0.81 [0.45, 1.49]
  2 studies · 194 participants
  Low

Warmed, or warmed and humidified CO2 vs unwarmed and unhumidified CO2

• Interventions to reduce shoulder pain following gynaecological laparoscopic procedures 2019 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 157 participants
  Moderate

Warmed, or warmed and humidified CO2 vs unwarmed and unhumidified CO2

The review found no eligible studies for this question.

• Interventions to reduce shoulder pain following gynaecological laparoscopic procedures 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Warmed, or warmed and humidified CO2 vs unwarmed and unhumidified CO2

• Interventions to reduce shoulder pain following gynaecological laparoscopic procedures 2019 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 95 participants
  Low