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ISSN 2063-5346
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Validate the Predictive Value of Distance from Skin to Hyoid Bone Via Usg as a Predictor of Difficult Laryngoscopy

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Dr Sandeep Shankar, Dr Shibu Sreedhar, Dr Ravi Kumar
» doi: 10.31838/ecb/2023.12.5.482

Abstract

Difficult tracheal intubation is a major concern for anaesthesiologists and contributes to preoperative morbidity and mortality. Many attempts have been made to develop reliable predictors for difficult intubation or difficult laryngoscopy. Suggested predictors for difficult intubation are Mallampati score III/IV, male patient, increased age, short neck, obesity and increasing Wilson score are few among them. Method- This study was conducted in 74 patients of age between 18- 65 years of ASA I & II undergoing elective surgery at hospital Preoperative airway assessments were done and Distance from Skin to Hyoid Bone was measured using ultrasound machine. All patients were routinely monitored with NIBP, SPO2, ECG, and EtCO2. The patient will be anaesthetized and intubation was performed by senior anaestheologist and grading will be done according to modified Cormack Lehane grade. Results- As per the ROC curve, it was found that patients with the value of ≥0.75 cm have a sensitivity and specificity of 80.9% and 43.5% respectively in predicting the difficult laryngoscopy with AUC 0.726. Conclusion- The ultrasound measurements of distance from skin to hyoid bone along with the clinicalassessment of airway can be useful in predicting difficult laryngoscopy.

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