Laryngeal injuries and intubating conditions with or without muscular relaxation: an equivalence study.

Purpose: The need for muscular relaxation to improve intubat-ing conditions and to reduce the incidence of laryngeal morbidity is still controversial. The aim of this study was to determine the incidence of symptomatic laryngeal injuries (SLI) and of acceptable intubating conditions (including both good and excellent conditions), both with and without cisatracurium during induction of anesthesia, along with moderate doses of remifen-tanil and propofol.