Can BMI be a predictor of perioperative complications in Head and Neck cancer surgery?

Introduction: The effect of BMI on development of perioperative complications in head and neck cancer surgeries is not welldefined. Aim: This study aims to evaluate the effect of body mass index (BMI) on the development of surgical complications during the perioperative period in head and neck carcinoma (HNC) patients. Materials and methods: This study was conducted from 2019 to 2020. Electronic medical records of 210 patients undergoing major (clean-contaminated) surgeries were analysed. Chi-square test or Fisher exact test for determining association in categorical data and independent T-test or Mann-Whitney U test for comparison between the presence of complications and relation with continuous clinical parameters were used. Results: The majority of patients were within normal-weight range (68.57%). Only 12.85% of patients had BMI under 18.5 kg/m(2) and 18.57% of patients had BMI equal to or more than 25 kg/m(2). Coexisting comorbidities were present in 48.7% of patients with BMI of more than 25 kg/m(2). Major and minor complications were present in 10.5% and 16.7% of all patients, respectively. Surgical site infections were present in 18.1% of patients. There was no statistical difference in the rate of complications (major, minor and SSI) in underweight, normal weight and overweight categories. The complications were significantly associated with the extent of surgery (P = 0.00413) and blood loss of more than 775 mL (P-value 0.005). Conclusions: In conclusion, the rate of surgical complications in head and neck onco-surgeries is not related to BMI of the patients. The perioperative management of these patients might require some modification due to co-existing comorbidities, but the overall impact on the development of complications could not be proven in this study.