Your recent article, “Catastrophic Sedation Errors Can be Avoided by Using CO2 Monitoring and Following Guidelines” (2021;47[4]:1,18-24), made several excellent recommendations that can significantly reduce unnecessary morbidity and mortality resulting from sedation.
However, I would like to emphasize one critical point that was not emphasized in the article: the issue of hypoxia, particularly during upper endoscopy. Inadequate ventilation eventually