Study flowchart. The administration of sugammadex, neostigmine, and placebo was randomized and double blinded. The administration of vecuronium was open. nTOF 0.9 = normalized train-of-four ratio 0.9. Light gray quadrangles show comparison for recovery times; dark gray quadrangles show those excluded from comparison of recovery times; rescue sugammadex = 2 mg/kg. Intraop = intraoperative; Postop = postoperative.