Which of the following train-of-four (TOF) patterns shown on the right is MOST consistent with partial recovery from a phase II block following neuromuscular blockade using a succinylcholine infusion?

Succinylcholine is among the oldest anesthesia medications still in common use. An intubating dose of succinylcholine produces complete neuromuscular blockade – and optimal intubating conditions – within seconds of administration. Recovery of neuromuscular function is similarly rapid, with return of full motor function typically within 10 to 15 minutes. Succinylcholine is indicated for use in rapid sequence induction and intubation when the goal is to achieve a protected (intubated) airway as quickly as possible after loss of protective reflexes. Succinylcholine is also useful in elective cases when rapid return of neuromuscular function is desired, either because the case is likely to be short or because monitoring of motor nerve function is part of the operation.

Succinylcholine is a depolarizing neuromuscular blocking...

You do not currently have access to this content.