Are Tracheotomies Required for Patients Undergoing Composite Mandibular Resections for Oral Cancer?

Abstract

Prophylactic tracheotomy has traditionally been performed during composite mandibular resection of oral cavity cancer to avoid postoperative airway compromise. The purpose of the present study was to measure the frequency and identify the factors associated with an increased or a decreased risk of an adverse airway event (AAE) within 30days postoperatively. A retrospective cohort study of patients who had undergone composite mandibular resection for oral cancer from 2006 to 2018 was conducted at the University of Tennessee Medical Center. The primary predictor variable was composite resection with or without immediate flap reconstruction. The primary outcome variable was realization of a 30-day AAE, defined as the requirement for tracheotomy for any reason, emergent endotracheal reintubation at any time during the postoperative admission, or prolonged (>48hours) postoperative endotracheal intubation. The secondary outcome variable was the inpatient length of stay. Descriptive and bivariate statistics were used to compare the patients with and without an AAE for demographic, confounding, and clinical characteristics. A total of 114 patients were identified through retrospective medical record review. The prevalence of AAEs in the sample was 8.8% (10 of 114). None of the 49 patients without immediate flap reconstruction developed an AAE. Of the 65 patients who had undergone flap reconstruction, 10 (15.4%) developed an AAE. The χ2 analysis revealed a significantly greater rate of AAEs when flap reconstruction was implemented (P<.05). Also, a significantly greater rate of AAEs was found in the group requiring resection of the floor of the mouth with bilateral neck dissections and immediate flap reconstruction compared with all other flap reconstruction groups (P<.05). A composite resection involving the floor of the mouth with bilateral neck dissection and flap reconstruction should receive strong consideration for prophylactic tracheotomy to avoid an AAE.