Preoperative ultrasonographic evaluation of the airway vis-à-vis the bedside airway assessment to predict potentially difficult airway on direct laryngoscopy in adult patients—a prospective, observational study
Chhabra, A., Thannappan, S., Iyer, H. (2023). Preoperative ultrasonographic evaluation of the airway vis-à-vis the bedside airway assessment to predict potentially difficult airway on direct laryngoscopy in adult patients—a prospective, observational study. EKB Journal Management System, 15(1), -. doi: 10.1186/s42077-022-00297-0
Anita Rajeev Chhabra; Sindhuja Thannappan; Hemalata R. Iyer. "Preoperative ultrasonographic evaluation of the airway vis-à-vis the bedside airway assessment to predict potentially difficult airway on direct laryngoscopy in adult patients—a prospective, observational study". EKB Journal Management System, 15, 1, 2023, -. doi: 10.1186/s42077-022-00297-0
Chhabra, A., Thannappan, S., Iyer, H. (2023). 'Preoperative ultrasonographic evaluation of the airway vis-à-vis the bedside airway assessment to predict potentially difficult airway on direct laryngoscopy in adult patients—a prospective, observational study', EKB Journal Management System, 15(1), pp. -. doi: 10.1186/s42077-022-00297-0
Chhabra, A., Thannappan, S., Iyer, H. Preoperative ultrasonographic evaluation of the airway vis-à-vis the bedside airway assessment to predict potentially difficult airway on direct laryngoscopy in adult patients—a prospective, observational study. EKB Journal Management System, 2023; 15(1): -. doi: 10.1186/s42077-022-00297-0

Preoperative ultrasonographic evaluation of the airway vis-à-vis the bedside airway assessment to predict potentially difficult airway on direct laryngoscopy in adult patients—a prospective, observational study

Ain-Shams Journal of Anesthesiology
Volume 15, Issue 1, January 2023  XML PDF (1.65 MB)
DOI: 10.1186/s42077-022-00297-0
View on SCiNiTO View on SCiNiTO
Authors
Anita Rajeev Chhabra email orcid ; Sindhuja Thannappan; Hemalata R. Iyer
Abstract
Background
Unanticipated difficult airway remains a challenge for the anesthesiologist with no established standard criteria to predict difficulty in intubation. Our aim was to correlate the pre-anesthetic ultrasonographic (USG) airway assessment parameters with Cormack-Lehane (CL) grade at direct laryngoscopy view under general anaesthesia.
Results
The incidence of difficult laryngoscopy was 22.7%. The sonographic distance from anterior neck surface to epiglottis (ANS-E) > 1.67 cm was observed to be a statistically significant USG predictor of difficult laryngoscopic view with sensitivity of 64.71% and specificity of 78.45% ( = 0.000). The sonographic distance from anterior neck surface to hyoid bone (ANS-H) or to anterior commissure (ANS-AC) did not corelate with difficult laryngoscopy. The ultrasound (US) parameters had higher negative than positive predictive value.
Conclusions
We found ANS-E distance to be the most significant predictor of difficult laryngoscopy in our study. USG is a useful tool to identify the “at-risk” patients for difficult airway.
Keywords
Direct laryngoscopy; Endotracheal anesthesia; Ultrasound
Statistics
Article View: 61
PDF Download: 58