Diagnostic value of different screening tests for predicting difficult intubation
Journal Title: Medpulse International Journal of Anesthesiology - Year 2019, Vol 9, Issue 3
Abstract
Aims: The aim of current study was to compare the diagnostic value of different screening test in predicting difficult intubation. Settings and Design: Hospital based observational cross sectional study Methods and Material: It was a study of 84 patients with the American society of anaesthesiologists’ physical status 1, 2 going through elective surgical procedures in general anaesthesia by tracheal intubation. Preoperative parameters such as Neck Circumference (NC) (cm), Sternomental Distance(SMD)(cm),Thyromental Distance(TMD)(cm),NC/TMD,NC/SMD, Modified Mallampati Test (MMT) and Wilson Score were measured in all the patients by the similar investigator. The primary outcome includes the prediction of difficult intubation as described by Intubation difficulty scale, patients were classified in to two groups with IDS score of ≥5 and <5 as the difficult and easy groups, respectively. Statistical analysis used: chi-square test, unpaired t-test. Results: Laryngoscopy was difficult in 10.7% patients. The highest sensitivity and negative predictive value was observed in the NC/TMD while the highest specificity and positive predictive value was observed in the MMT. Conclusions: The combination of individual tests or risk factors adds some incremental diagnostic value as compared to the value of each test alone. However, the application of NC/TMD may be superior to NC/SMD, MMT and Wilson score in predicting difficult airway. Key Word: Difficult Intubation, NC/TMD, NC/SMD, MMT, Wilson Score, IDS.
Authors and Affiliations
Bharti R Rajani, Mitali B Saraswala, Shobhana C Gupta
Keywords
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