Table 4 Association of airway assessment tests with modified Cormack-Lehane grading with BURP
| Cormack-Lehane grading with BURP | P-Value | ||
|---|---|---|---|
|
Grades 1 and 2A (Easy, n = 145) |
Grades 2B and 3 (Difficult, n = 15) | ||
| MMT with tongue protrusion | 0.437 | ||
| Mallampati I and II | 129 | 9 | |
| Mallampati III and IV | 16 | 6 | |
| MMT without tongue protrusion | 0.536 | ||
| Mallampati I and II | 113 | 6 | |
| Mallampati III and IV | 32 | 9 | |
| Mandibular protrusion test | < 0.001 | ||
| Grade A and B | 138 | 8 | |
| Grade C | 7 | 7 | |
| Inter-incisor gap (cm) | 4.61 ± 0.74 | 4.5 ± 0.68 | 0.569 t |
| Thyromental distance (cm) | 7.19 ± 1.47 | 8.00 ± 1.47 | 0.021 t |
| Sternomental distance (cm) | 24.00 ± 14.80 | 12.80 ± 2.80 | 0.007 t |