Research Article
Magnitude and Predisposing Factors of Difficult Airway during Induction of General Anaesthesia
Table 2
Airway parameters and risk factors,
value < 0.05.
| Variable | Frequency |
| Oropharyngeal view (OPV) | | OPV I & II | 150 70.8%} | OPV III & IV | 31 14.6% | Jaw slide grade (JSD) | | JSD A | 73 34.4%} | JSD B | 91 42.9%} | JSD C | 17 8% | Mouth opening (interincisor length) | | <30 mm | 18 8.9%} | 31–50 mm | 149 70.3%} | >51 mm | 13 6.1% | Mandibular length (MBL) | | <70 mm | 4 1.9%} | 71–85 mm | 30 14.2%} | 86–95 mm | 80 37.7%} | >96 mm | 67 31.6} | Sternomental distance (SMD) | | 81 mm–120 mm | 65 30.7%} | 121 mm–135 mm | 76 35.6%} | >136 mm | 40 18.9} | Thyromental distance (TMD) | | <50 mm | 2 0.9%} | 51–65 mm | 67 31.6%} | 66–75 mm | 67 31.6%} | >76 mm | 45 21.2%} |
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