USE OF ULTRASOUND PARAMETERS FOR PREDICTION OF DIFFICULT INTUBATION AND ITS RELATION WITH THE CORMACK AND LEHANE GRADE OF LARYNGOSCOPY

Background and AIMS: Airway ultrasound is novel,safe noninvasive modality that help in predicting difficult airway.This study aimed todetermine the usefulness of airway order to predict intubation. Method:- This was a hospital based prospective observational on 100 patients aged 18-60 years either sex undergoing elective surgery under general anaesthesia with endotracheal intubation.Preoperatively physical evaluation performed byusing six parameters including Modified Mallampati class(MMC), thyromental distance(TMD), sternomental distance(SMD) , inter-incisor (IID)distance hyomental distance(HMD)and neck circumference(NC). In preoperatively, Ultrasoundwas andnoted ratio depth pre‑epiglottic space (PES) distance from epiglottis mid‑point between vocal cords (E‑VC). CL grade also noted during laryngoscopy. Compared Cormack–Lehane grade. Specificity,Sensitivity, positive predictive value (PPV), negative (NPV) accuracywere calculated.Airway measurements were compared parametersin Cormack –Lehane Results: The incidence intubation 7%. Sensitivity PES/E-VC higher than NC, TMD, HMD, IID SMD but less class. Specificity, PPV lower parameters.NPV comparable. Conclusion: Percutaneous useful promising technique for Lehane grading combination all these definitely helpful better prediction.