ii. For TOF monitoring, skin ECG electrodes will be placed along the ulnar nerve on the volar forearm, as per routine clinical protocol. Visual or tactile intraoperative monitoring of neuromuscular block level will be performed according to the clinicians' usual routine. At the end of surgery, once the clinician has determined that recovery of neuromuscular block is adequate for maintenance of spontaneous ventilation, the TOF will be determined objectively (it will be measured with the currently available monitor, TOF--‐Watch or StimPod), and then the patient's trachea will be extubated, as per usual clinical routine. In 150 of the 300 patients, a dose of sugammadex (2 mg/kg) will be administered, and then routine TOF measurements will be made in the PACU.