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  • Postoperative laryngeal mor...
    Nakanishi, T.; Yoshimura, M.; Sakamoto, S.; Toriumi, T.

    Anaesthesia, August 2018, 2018-Aug, 2018-08-00, 20180801, Letnik: 73, Številka: 8
    Journal Article

    Summary Tracheal intubation without neuromuscular blockade may be associated with worse intubating conditions and increased laryngeal morbidity. We hypothesised that tracheal intubation using the McGRATH™ 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 McGRATH MAC videolaryngoscope for tracheal intubation, the incidence of postoperative hoarseness was not inferior if neuromuscular blockade was avoided.