Terada S, et al. - In this single-center, prospective observational study, the incidence of respiratory depression in patients who received epidural morphine after cesarean delivery was estimated by researchers using a continuous respiratory rate monitoring system with a finger sensor. One hundred patients were recruited for elective cesarean delivery and intraoperative neuraxial morphine from April to December 2016. After 3 mg of epidural morphine, mild bradypnea (respiratory rate ≤10 breaths/min) and desaturation were common. It was observed that about half of the women had mild respiratory depression, but only one had moderate respiratory depression. Continuous monitoring of the respiratory rate until ambulation can assist in the early identification of respiratory depression after neuraxial morphine administration.