Comparison of modified Mallampati test and thyromental height test for preoperative airway assessment: A prospective observational study

Comparison of modified Mallampati test and thyromental height test for preoperative airway assessment: A prospective observational study

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Background: Prevision of a potentially difficult airway in the preoperative period is imperative.The available tools are RFID and Access Control evaluation of mouth opening, Mallampati test; atlanto-occipital extension; hyomental, thyromental, and sternomental distances; and upper lip bite test; thyromental height test (TMHT) is a new indicator.Aims: To compare the effectiveness of preoperative anaesthetic airway evaluation methods of TMHT and Modified mallampati test (MMT) to predict the difficulty in intubation.Materials and Methods: A prospective observational study was aimed to compare the effectiveness of preoperative anesthetic airway evaluation methods of TMHT and modified Mallampati test (MMT) to predict the difficulty in intubation.

A total of 150 subjects were included in this study.MMT and TMHT were compared, and sensitivity, specificity, predictive values, and accuracy were calculated.Results: On comparison, we Stemless Wine Glass found TMHT to be more sensitive (93.33%) than MMT (77.

78%); both tests have high specificity (TMHT 91.43%; MMT 81.90%).Positive predictive value was 82.

35% for TMHT and 64.81% for MMT.Similarly, negative predictive value was 96.97% for TMHT and 89.

58% for MMT.Accuracy was 92.00% for TMHT and 80.66% for MMT.

Conclusions: TMHT can predict difficult intubation better than MMT (high positive predictive value).However, both TMHT and MMT predict easy intubations effectively, their negative predictive values being high.