Fig. 3From: Incidence of postoperative opioid-induced respiratory depression episodes in patients on room air or supplemental oxygen: a post-hoc analysis of the PRODIGY trialPercentage of patients with A ≥ 1 respiratory depression episode and B ≥ 1 apnea episode as a function of the length of time after surgery. The percent of patients is a population average and does not account for times when continuous monitoring transiently pausedBack to article page