Postoperative Oxygen Therapy in Patients With OSA: A Randomized Controlled Trial

Postoperative supplemental oxygen is commonly used, but it may contribute to respiratory depression in patients with OSA receiving opioids. This randomized controlled trial investigated the effect of postoperative supplemental oxygen on arterial oxygen saturation (Sao2), sleep respiratory events, and CO2 level in patients with untreated OSA. Postoperative supplemental oxygen was found to improve oxygenation and decrease the AHI without increasing the duration of apnea-hypopnea event or PtcCO2 level. A small number of patients had significant CO2 retention while receiving supplemental oxygen.

https://www.ncbi.nlm.nih.gov/pubmed/28007620