Τετάρτη 7 Φεβρουαρίου 2018

Comparison of laryngeal morbidities with modified reinforced silicone tube intubation guided over a bougie vs. a guidewire: novel assessment with voice analysis

Summary

Semi-rigid flexible introducer-guided tracheal intubation is associated with pharyngolaryngeal morbidities. We compared the practice of railroading a newly described modified reinforced silicone tracheal tube with a built-in guide channel in its wall over a non-kinking guidewire with railroading the same tube over a disposable bougie, with respect to pharyngolaryngeal morbidities. One hundred and twenty-four ASA 1 and 2 adults were randomly assigned to undergo bougie-guided (n = 62) or wire-guided (n = 62) intubation under general anaesthesia. All patients were assessed for postoperative pharyngolaryngeal complaints. In addition, voice parameters (fundamental frequency, shimmer, jitter and harmonic noise ratio) with vowels ‘a’ and ‘i’ were analysed pre-operatively and 24 h postoperatively. The success of first-attempt intubation and the associated haemodynamic response were also recorded. A higher incidence of pharyngolaryngeal complaints was seen in the bougie group, 48.3%, 95%CI (35.9–60.9%) when compared with wire-guided group 28.3%, 95%CI (18.0–40.6%), p = 0.01. Postoperatively, all the voice parameters were significantly more affected when compared with their pre-operative value in the bougie-guided group (p < 0.05) but not in the wire-guided group. The success of first-attempt intubation was similar in both groups. Wire-guided orotracheal intubation was associated with a lower incidence of pharyngolaryngeal complaints and effect on voice when compared with bougie-guided intubation.



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