Diagnostic Accuracy of Hyomental Distance Ratio (HMDR) for Prediction of Difficult Laryngoscopy in Patients Undergoing Surgery Under General Anesthesia Using Tracheal Intubation

Background: To keep the airway open, a flexible plastic tube (ETT) is inserted into trachea during tracheal intubation. Even when done correctly, intubation requires much clinical experience, and catastrophic problems can occur. Mandibular space has been estimated using hyomental distance (HMD), although HMD only found to provide limited amount of diagnostic accuracy on its own. In order determine how well Hyomental Distance Ratio (HMDR) predicts difficult laryngoscopy, we conducted this study. Objectives: Using Cormack Lehane classification as gold standard, objective assess validity for prediction challenging laryngoscopy in patients undergoing surgery under general anaesthesia. Materials & Methods: The department anesthesiology operating rooms at Sir Ganga Ram Hospital Lahore cross-sectional study over course six months 2015–2016. approach non-probability purposive sampling was applied. Informed consent acquired, patient demographics were recorded. researcher herself then assessed HDMR. if had or normal HDMR determined. After that, performed patients. If vocal cords visible, mouth opened, case (CL), with easy being designated. SPSS version 20 used enter analyse all data. Results: our mean age 43.23 11.63 years male female ratio 1.5:1. study, 43.91% an HDR HDR's sensitivity 95.05%, specificity 96.12%, 95.65% CL standard. Practical Implication: According strategy be applied accurately other hospitals. Government should establish guidelines most trustworthy techniques benchmark healthcare settings. Conclusion: findings HMDR viable tool anticipating having anaesthesia Keywords: Laryngoscopy, intubation, Classification,