European Journal of Molecular & Clinical Medicine

Abstract

C-MAC videolaryngoscope works best amongst airway armamentarium for anticipated difficult airways. However, tube manipulation in anterior glottic apertures even under good visualization requires adjuncts. This study aimed at comparing 60° and 90° angled stylets for endotracheal intubation using C-MAC videolaryngoscope in terms of time taken and first-pass success rate (primary outcomes) as well as hemodynamic response and side-effects associated with intubation (secondary outcome).
METHODS: This prospective, randomized study was conducted in the department of Anesthesiology, Maharishi Markandashwar University, Amabala, Haryana, India, after ethical committee clearance in 60 ASA status I and II patients within the age group of 18-65yrs, randomly divided into two groups- Group I (n=30): intubated with 60° angled malleable stylet, Group II (n=30):intubated with hockey shaped stylet (90° angle). All data was represented in mean ± standard deviation or proportions. Chi-square test was used for statistical analysis of quantitative data while Student t-test for qualitative data where p value<0.05 was taken significant.
RESULTS: First-pass success rate was 90% in group I versus 83% in group II (p value > 0.05). Mean intubation time was less in group I (33s) compared to group II (39.57), p-value 0.000 (highly significant). There was no significant change in haemodynamics in both the groups. Sore throat was seen more in group I (20.0%) and (3.3%), p-value<0.05.
CONCLUSION: Use of 60° angulated stylet significantly reduces time for intubation and has relatively more first-pass success rate in comparison to 90° styletted ETT in adults intubated with C-MAC VLS, although the incidence of sore throat is higher.