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 index | Boundary value | Accuracy rate (%) | Sensitivity (%) | Specificity degree (%) | PPV (%) | NPV (%) | AUC |
| BMI | 22.834 kg/m2 | 63.7 | 71.8 | 62.6 | 22.8 | 91.6 | 0.715 | MMT | 2 grade | 41.6 | 81.3 | 35.4 | 16.2 | 92.3 | 0.797 | ULBT | 2 grade | 58.6 | 47.5 | 60.4 | 15.4 | 88.3 | 0.533 | TMD | 6.52 cm | 80.4 | 39.7 | 70.4 | 16.9 | 88.5 | 0.873 | TMH | 4.81 cm | 67.1 | 71.8 | 66.5 | 24.8 | 93.7 | 0.741 | IID | 4.56 cm | 51.2 | 79.4 | 46.8 | 18.6 | 93.5 | 0.737 | DSE | 1.78 cm | 69.4 | 75.6 | 68.4 | 26.6 | 94.9 | 0.676 | DSH | 0.89 cm | 51.8 | 71.6 | 48.3 | 17.6 | 91.7 | 0.662 | DSV | 0.75 cm | 66.4 | 66.1 | 66.5 | 23.1 | 92.5 | 0.614 | HMD | 5.08 cm | 60.3 | 88.6 | 55.7 | 23.6 | 97.3 | 0.812 | Tongue width | 4.36 cm | 60.3 | 88.6 | 55.7 | 23.6 | 97.3 | 0.738 | Tongue thickness | 5.56 cm | 69.4 | 75.6 | 68.4 | 26.6 | 94.9 | 0.776 |
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