An Evaluation of the Neuromuscular Junction in Neonates Using the TetraGraph

Inclusion Criteria: * ASA 1-3 patients * Aged 28 days - 3 months or ≥ 12 years * Undergoing a surgical procedure with a volatile-agent based anesthetic that does not require administration of a neuromuscular blocking agent Exclusion Criteria: * Patients with history of a peripheral neurologic or neuropathic disorder * Patients in whom the upper extremity cannot be used for TOF monitoring * Patients undergoing a surgical procedure in which neuromuscular blockade is required * Edematous patients * Patients receiving total intravenous anesthesia (TIVA)