Comparison of Modified Mallampati Classification and Thyromental Height to Predict Difficult Intubation

Introduction: Difficult intubation is an emergency situation that anaesthetist come across frequently. It a frequent cause of mortality in practice anesthesia. Mallampati classification (MPC) the oropharyngeal structures simple test to assess anticipated difficult airway for endotracheal intubation. thyromental height (TMH) now also commonly used predict Objective: To evaluate diagnostic accuracy modified mallampati and using Cormack Lehane's laryngoscopy as gold standard. Study Design: Descriptive cross sectional validation study. Setting: Department Anaesthesia, Benazir Bhutto Hospital, Rawalpindi. Duration: 20-Sep-2021 19-Mar-2022. Material Methods: A total number 1035 were included this Pre-operatively (MMT) TMH was performed. class III IV considered difficult. While >50 mm equipment’s ready, i.e. stylet, boogie, LMA, I-gel. General anaesthesia induced operating room after collecting baseline vital signs. After three minutes, skilled anesthesiologist performed while patient sniffing. validate diagnosis intubation, laryngeal view appraised Lehane (C-L) grading system. Results: Mean age patients 40.16±12.19 years. 152.94±8.32 cm, mean weight 65.01±13.59 Kg body mass index (BMI) 27.78±5.64 kg/m2. There 768 (74.20%) males 267 (25.80%) females. 77.8% sensitive, 94.6% specific having 70.0% PPV, 96.3% NPV 92.27% accuracy. On MMP taking according standard standard, 92.4% 90.1% 60.2% 98.6% 90.3% Practical implications: Thyromental Height needs more broad usage multiple settings be validated single most important predictor laryngoscopy. will thus widely all over country rendering fewer complications patients. Conclusion: sensitive accurate at foretelling when compared score. has potential anatomical metric possibility Keywords: classification, height,