A 60-year-old patient receives rocuronium for neuromuscular blockade during surgery. At the end of the case, the anesthesiologist uses a peripheral nerve stimulator. What train-of-four ratio indicates adequate neuromuscular recovery?
- A 0.5
- B 0.7
- C 0.9 ✓
- D 1.0
Correct answer: C. 0.9
Explanation
A train-of-four ratio of ≥0.9 indicates adequate neuromuscular recovery. A ratio of 0.7 is associated with residual paralysis, impaired pharyngeal function, and increased risk of aspiration. A ratio of 1.0 is ideal but not required for adequate recovery. The 0.9 threshold is the standard for safe extubation and prevention of postoperative residual curarization.
Reference: Miller's Anesthesia, 9th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.