3. TOF Monitoring with an objective monitor (TOF--Watch or StimPod) will be used in all patients once the decision to extubate the patients' trachea is made. The monitoring will continue in the PACU until full recovery (TOF=1.0) is documented. Monitoring will be performed as per usual clinical routine via surface ECG electrodes. In the PACU, the current amplitude will be decreased to 30--‐40 mA, current intensities that are used routinely for patient care in other centers and that do not result in patient discomfort.