Premium
Postoperative laryngeal morbidity and intubating conditions using the McGRATH™ MAC videolaryngoscope with or without neuromuscular blockade: a randomised, double‐blind, non‐inferiority trial
Author(s) -
Nakanishi T.,
Yoshimura M.,
Sakamoto S.,
Toriumi T.
Publication year - 2018
Publication title -
anaesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1111/anae.14303
Subject(s) - medicine , tracheal intubation , anesthesia , neuromuscular blockade , rocuronium , sore throat , intubation , laryngoscopy , blockade , neuromuscular transmission , incidence (geometry) , surgery , physics , receptor , optics
Summary Tracheal intubation without neuromuscular blockade may be associated with worse intubating conditions and increased laryngeal morbidity. We hypothesised that tracheal intubation using the Mc GRATH ™ MAC videolaryngoscope would not increase postoperative hoarseness, even without neuromuscular blockade. In this prospective, randomised, parallel‐group, double‐blind, non‐inferiority trial, 248 patients were randomly assigned to tracheal intubation with or without neuromuscular blockade using rocuronium. Hoarseness and sore throat were evaluated at 24 h and 48 h postoperatively. The primary outcome was the incidence of hoarseness at 48 h postoperatively with a pre‐defined non‐inferiority margin of 10%. Hoarseness at 48 h did not differ between the non‐paralysed group and the paralysed group (8.1% vs. 13.6%; absolute difference: −5.4%; 95% CI : −13.3 to 2.4). Also, no significant differences were found between the two groups for hoarseness at 24 h (22.8% vs. 27.1%) or for sore throat at 24 h (12.2% vs. 9.3%) and 48 h postoperatively (1.6% vs. 0.8%). Although more patients in the non‐paralysed group showed an adducted position of the vocal cords (29.3% vs. 0%), there were no significant group differences in the ease of laryngoscopy (96.7% vs. 98.3%), Cormack grade laryngeal view 1 (97.6% vs. 96.6%) or first‐pass success rate (100% vs. 100%). We conclude that when using the Mc GRATH MAC videolaryngoscope for tracheal intubation, the incidence of postoperative hoarseness was not inferior if neuromuscular blockade was avoided.