A randomized control trial of awake oral to submental conversion versus asleep technique in maxillofacial trauma

Shahna Ali, Manazir Athar, Syed Moied Ahmed, Obaid Ahmad Siddiqi, Amrin Badar

Annals of Maxillofacial Surgery 2017 7(2):202-206

Aim: This study was designed to evaluate the efficacy of awake oral to submental conversion over asleep technique. Materials and Methods: This randomized clinical study was conducted in maxillofacial department of a tertiary care hospital in patients who had panfacial or mandibular fractures requiring elective surgical correction. The patients were randomly divided into two groups of 12 patients each, asleep fiberoptic-assisted submental intubation (SMI) (Group G; n = 12) and awake fiberoptic-assisted SMI (Group A; n = 12). The primary predictor was mean conversion time of oral to SMI while other predictors were overall success rate, ease of conversion, and complications. Data are presented as mean (±standard deviation) and frequencies (%) as appropriate. Statistical analysis done using unpaired t-test or Chi-square test was performed and P < 0.05 was considered statistically significant. Results: Twenty-four patients (19:5;Male:Female) aged 18– 55 years (Group G = 35.96; Group A = 32.43 years) were included in the study. SMI was successful in all except two patients in group G. Overall success rate was similar in both groups. Time to convert orotracheal intubation to SMI was significantly less in group A (Group G = 9.55 ± 1.42, Group A = 5.67 ± 1.73; P < 0.001). Ease of SMI was found Grade I in 30% and 83% of the patients of group G and A, respectively. No serious complications were observed except 2 cases of bleeding, and 1 case of tube damage. Conclusion: Awake oral to submental conversion requires lesser time in comparison to asleep technique besides improving the ease (Δ = 53%) of the procedure.

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