Impact of Hyoid Position, Mandible Body Length and Anthropometric Measurements on Sleep Indices in Patients with Snoring in North Indian Population.

Abstract

In Indian population, the estimated prevalence of OSA is 7.5% to 13.5%. Craniofacial anatomical variations and obesity are the major risk factors for OSA. Among the craniofacial anatomy, the neck circumference and abnormal craniofacial morphology play an important role in the pathogenesis of OSA. Obesity is the major risk factor for which waist and hip circumference and BMI are considered. The aim of this paper was to evaluate the impact of hyoid position, mandible body length (MBL) and anthropometric measurements on sleep indices in patients with snoring in North Indian population. In this cross-sectional study, we analyzed the position of the hyoid, mandible body length and anthropometric measurements, of 104 patients attending ENT OPD with the complaint of snoring and excessive daytime sleepiness. All subjects underwent a full overnight polysomnography. The position of the hyoid, MBL and the anthropometric measurements were compared with the sleep architecture of the subjects, and a p value < 0.05 was considered significant. A strong positive correlation is seen between the position of the hyoid, MBL and anthropometric measurements on the sleep indices in this study. Pearson 2-tailed correlation was evaluated, and upon analysis, it was found that at significance level of 0.01, obesity (BMI) is strongly correlated with overall AHI with correlation coefficient of 0.926, whereas AHI in supine position was having coefficient of 0.837 and AHI on right side and left side was almost same 0.597 and 0.575, respectively. Similarly WC is strongly correlated with AHI and RDI, having coefficient of 0.930 with both. NC and HC also showed strong positive correlation with overall AHI and RDI having correlation coefficient of 0.893, 0.926 with AHI and 0.893, 0.926 with RDI, respectively. The MBL also showed a strong positive correlation with AHI and RDI with correlation coefficient of 0.994 in both. The position of the hyoid also showed a strong positive correlation with AHI and RDI. Results indicated that significant positive correlation was found between position of the hyoid, MBL and anthropometric measurements on the sleep indices in patients with snoring in North Indian population.