RATIO OF PATIENTS HEIGHT TO THYROMENTAL DISTANCE ( RHTMD) COMPARED TO THYROMENTAL DISTANCE FOR PREDICTION OF DIFFICULT INTUBATION

An assessment of the ratio of height to thyromental distance compared to thyromental distance as a predictive test for prediction of difficult tracheal intubation in Thai patients.

BACKGROUND AND RATIONALE Preoperative evaluation is important in the detection of patients at risk for difficult tracheal intubation. Thyromental distance (TMD) is often used for these purposes, but its value as an indicator for difficult intubation is questionable, as it varies with patient size and body proportions. The purpose of the present study was to evaluate and compare the accuracies o...

Neck circumference to thyromental distance ratio: a new predictor of difficult intubation in obese patients.

BACKGROUND This study was performed to assess whether intubation is more difficult in obese patients and to assess the ability of a new index: the ratio of the neck circumference to thyromental distance (NC/TM), to predict difficult intubation in obese patients. METHODS The incidence of difficult tracheal intubation in 123 obese (BMI≥27.5 kg m(-2)) and 125 non-obese patients was compared. Dif...

Comparison of Upper Lip Bite Test and Ratio of Height to Thyromental Distance with Other Airway Assessment Tests for Predicting Difficult Endotracheal Intubation

Difficult Intubation in Patient with Short Thyromental Distance: Usefulness of Tongue Traction Maneuver

Introduction: Short Thyromental Distance (TMD; <5 cm) has been correlated with difficult direct intubation in adult patients. Differences in patient characteristics may influence the incidence of difficult airway intubation, especially in patients with a reduced mandible dimension. We report a case affected by Goldenhar’s syndrome treated for mandibular hypoplasia with difficulties in intubatio...

Modified Mallampati test and thyromental distance as a predictor of difficult laryngoscopy in Thai patients.

BACKGROUND Preoperative evaluation of anatomical landmarks and clinical factors are important in the detection of patients at risk for difficult laryngoscopy. The modified Mallampati test (MMT) and thyromental distance (TMD) are commonly used for this purpose but there are controversies regarding their accuracy. OBJECTIVE The objective of the present study was to evaluate the accuracy of MMT ...