Forest plot of primary outcomes of ESD with CO₂ insufflation and air insufflation.

Abstract

<p>A: post-procedural abdominal pain VAS score; SMD with 95% CI; B: Percentage of patients without pain; RR with 95% CI; C: mean PtcCO₂ levels; SMD with 95% CI; D: post-procedural PaCO₂; SMD with 95% CI.</p