Research Article

Diagnostic Efficacy and Clinical Value of Ultrasonography in Difficult Airway Assessment: Based on a Prospective Cohort Study

Table 3

Predictive efficacy of different indicators for difficult laryngoscope exposure.

Measurement indexBoundary valueAccuracy rate (%)Sensitivity (%)Specificity degree (%)PPV (%)NPV (%)AUC

BMI22.834 kg/m263.771.862.622.891.60.715
MMT2 grade41.681.335.416.292.30.797
ULBT2 grade58.647.560.415.488.30.533
TMD6.52 cm80.439.770.416.988.50.873
TMH4.81 cm67.171.866.524.893.70.741
IID4.56 cm51.279.446.818.693.50.737
DSE1.78 cm69.475.668.426.694.90.676
DSH0.89 cm51.871.648.317.691.70.662
DSV0.75 cm66.466.166.523.192.50.614
HMD5.08 cm60.388.655.723.697.30.812
Tongue width4.36 cm60.388.655.723.697.30.738
Tongue thickness5.56 cm69.475.668.426.694.90.776