Fig. 1From: Peri-operative diaphragm ultrasound as a new method of recognizing post-operative residual curarizationRecruitment and follow-up flow chart. Seventy-five patients receiving non-thoracic and non-abdominal elective surgery at the Peking Union Medical College Hospital from August to October 2019 were recruited; each provided signed informed consent before the diaphragm ultrasonogram. Baseline diaphragm ultrasound including diaphragm excursion and diaphragm thickening fraction of quiet breathing and deep breathing were acquired prior to operation. Abbreviation: PACU, post-anaesthesia care unit; TOF, Train of FourBack to article page