Ratio of Patient’s Height to Thyromental Distance (Rhtmd) Compared to Thyromental Distance for Prediction of Difficult Intubation

Abstract

BACKGROUND AND OBJECTIVEPreoperative evaluation is important in the detection of patients at risk for difficult tracheal intubation. The purpose of the present study was to evaluate and compare the accuracies of the Ratio of Patient's Height to TMD (Ratio of height to TMD = RHTMD), with TMD and Modified Mallampati classification (MP) in the prediction of difficult tracheal intubation.