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ORIGINAL ARTICLE
Year : 2020  |  Volume : 64  |  Issue : 8  |  Page : 704-709

A randomised preliminary study to compare the performance of fibreoptic bronchoscope and laryngeal mask airway CTrach (LMA CTrach) for visualisation of laryngeal structures at the end of thyroidectomy


Department of Anesthesiology and Critical Care, University College of Medical Sciences and Guru Teg Bahadur Hospital, Shahdara, Delhi, India

Correspondence Address:
Dr. Geetanjali T Chilkoti
A-1404, Jaipuria Sunrise Greens, Ahinsa Khand, Indirapuram, Ghaziabad - 201 014, Uttar Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ija.IJA_138_20

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Background and Aims: Various methods have been used to check vocal cord movements as a routine before awakening the patient at the end of thyroidectomy to rule out recurrent laryngeal nerve (RLN) palsy; out of which, fibreoptic-assisted visualisation via laryngeal mask airway (LMA) being the most desirable. Methods: Thirty patients of either sex, aged 18-65 years, American Society of Anaesthesiologists (ASA) grade I/II, scheduled for thyroidectomy under general anaesthesia (GA) were included and were randomised to receive either fibreoptic assisted (FB) or LMA CTrach-assisted (CT) visualisation of laryngeal structures at the end of thyroidectomy. The primary outcome was grade of view of laryngeal structures and secondary outcomes were time taken to achieve optimal view of laryngeal structures, ease of visualisation, hemodynamic parameters, and complications. Results: In the fibreoptic group, we obtained comparable optimal laryngeal view i.e., grade 1 and 2 in all (100%) patients in comparison to 14 (93.33%) in LMA CTrach group. The “time taken to achieve the optimal view” was significantly lower in the CTrach group when compared to Fibreoptic group (220.67 ± 95.98 vis-a-vis 136.67 ± 68.98). The ease of visualisation of laryngeal structures was comparable (P = 0.713) and the baseline haemodynamic parameters were comparable between the 2 groups and at various designated intervals. In total, 6.66% and 26.66% patients in group FB and CT group, respectively, required manoeuvres. However, difference was statistically significant (P < 0.05). Conclusion: Both Fibreoptic-assisted and LMA CTrach-assisted visualization of laryngeal structures in thyroidectomy are equally efficacious in terms of the optimal laryngeal view obtained and ease of visualisation. However, the time taken to achieve optimal laryngeal view was lesser with LMA CTrach.


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