After anesthesia is induced, 2 EMG TOFF devices will be placed on the patients arms, one on the right arm, the other on the left. There will be a randomization per dominant hand and nondominant hand for the placing of the devices. The devices are the Stimpod NMX450X and the Datex-Ohmeda E-NMT.

Inclusion Criteria:

• Adult patients (18 years old and above)
• undergoing General Anaesthesia for noncardiac surgery requiring the use of a neuromuscular blocking agent.

Exclusion Criteria:

• Use of different types of neuromuscular blocking agents for the same patient within the same surgical procedure.
• Known Neuromuscular diseases/syndromes judged to condition accurate neuromuscular monitoring.
• Known acute or chronic hepatic disease.