Prediction of Difficult Airway Using Sonographic Assessment of Pre-Epiglottic Space Versus Mallampati Grading in Correlation to Cormack Lehane Grading | ||||
| Zagazig University Medical Journal | ||||
| Articles in Press, Accepted Manuscript, Available Online from 11 March 2024 | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/zumj.2024.273049.3206 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Gehad Mohamed Mohamed Abdel Aziz  1; Balata A. A.1; Hatem Ahmed Nazmi Mohamed2; Ali Mohamed Ali Hasan1
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| 1Department of Anesthesia, Intensive Care and Pain Management, Faculty of Medicine, Zagazig University, Egypt | ||||
| 2Department of Anesthesia, Intensive Care and Pain management, Faculty of Medicine, Zagazig University, Egypt | ||||
| Abstract | ||||
| Background: In the intensive care units, emergency, and operating rooms, ultrasound (US) has become a safe, simple, small, noninvasive, and portable technique for quick airway evaluation and management. This work aimed to assess the validity of ultrasound as regards the correlation to the Cormack-Lehane (CL) grading using direct laryngoscopy and for predicting the difficult airway. Methods: A group of 140 patients, ASA I/II were selected in this prospective observational study who took part in elective surgical procedures that required intubation using direct laryngoscopy under general anesthesia. Prior to starting anaesthesia, an ultrasound image of the airway was recorded, and measurements were taken for the pre-epiglottic space (PES) depth and the distance between the epiglottis and vocal cords (E-VC). The CL grade was then matched to the ultrasound measures taken during direct laryngoscopy. Results: There were positive significant correlations between difficult Laryngoscopy and ASA, number of attempts, PES, PES/E-Vc, time of US and complications (p<0.001). A negative significant correlation was revealed between difficult Laryngoscopy and E-Vc (p<0.001). Conclusion: Patients with difficult airway could be better identified with sonographic assessment of the upper airway. The ratio of the pre-epiglottic space to the distance between the epiglottis and midway through the vocal cords proved a reliable predictor for the Cormack-Lehane grading compared to Mallampati grading in which increasing Pre E and the ratio of Pre E/E‑VC were associated with increased risk of difficult intubation | ||||
| Keywords | ||||
| Difficult Airway; Sonographic Assessment; Pre-Epiglottic Space; Mallampati Grading; Cormack Lehane | ||||
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