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Point-of-care ultrasound in the airway assessment: A correlation of ultrasonography-guided parameters to the Cormack–Lehane Classification
| Content Provider | Scilit |
|---|---|
| Author | Rana, Shelly Bhandari, Shyam Koundal, Vishal Chaudhary, Sudarshan Kumar Verma, Versha Sharma, Shalini |
| Copyright Year | 2018 |
| Abstract | Background and Aim: The sonographic assessment of airway in the preoperative period has encouraging results in predicting difficult laryngoscopy. Materials and Methods: The prospective, observational study was conducted on 120 patients scheduled for elective surgery requiring general anesthesia and tracheal intubation. The depth of the pre-epiglottic space (Pre-E), the distance from the epiglottis to the midpoint of the distance between the vocal cords (E-VC) was measured sonographically. Similarly, hyomental distance ratio (HMDR) was sonographically measured with head in neutral and extended positions. The primary outcome was the efficacy of Pre E/E-VC, HMDR for predicting difficult laryngoscopy (Cormack–Lehane [CL] Grade 3, 4). The secondary outcome was to correlate these parameters to CL grading. Results: Difficult intubation was observed in 12.5% of patients. The mean ± standard deviation (SD) of Pre E/E-VC ratio was 1.33±0.335, 1.62±0.264 and 1.87±.243, 2.22±.29 for CL Grade 1, 2, 3, and 4, respectively (P = 0.00). The mean ± SD of HMDR was 1.11±.35, 1.12±.29, and 1.07±.39, 1.04 ± 0.01 for CL Grade 1, 2, 3, and 4, respectively (P = 0.00). Pre E/E-VC ratio of more than 1.77 cm had 82% sensitivity, specificity 80%, whereas HMDR less than1.085 had sensitivity 75% and specificity 85.3%, in predicting difficult laryngoscopy (P = 0.00). Conclusion: The sonographic measurement of the Pre E/E-VC ratio is a better predictor of CL grading as compared to HMDR. The noninvasive prediction of CL grading can be precisely done by Pre-E/E-VC ratio (range: 0–1.425 corresponds to CL Grade 1; 1.425–1.77 ≈ CL Grade 2; 1.77–1.865 ≈ CL Grade 3, more than 1.865 corresponds to CL Grade 4). |
| Related Links | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5875221/pdf http://www.saudija.org/article.asp?issn=1658-354X;year=2018;volume=12;issue=2;spage=292;epage=296;aulast=Rana;type=2 |
| Ending Page | 296 |
| Page Count | 5 |
| Starting Page | 292 |
| File Format | XHTML |
| ISSN | 1658354X |
| e-ISSN | 09753125 |
| DOI | 10.4103/sja.sja_540_17 |
| Journal | Saudi Journal of Anaesthesia |
| Issue Number | 2 |
| Volume Number | 12 |
| Language | English |
| Publisher | Medknow |
| Publisher Date | 2018-01-01 |
| Access Restriction | Open |
| Subject Keyword | Otorhinolaryngology Anesthesia General Intubation Endotracheal Sonography Saudi Journal of Anaesthesia, Volume 12, Issue 2 |
| Content Type | Text |
| Resource Type | Article |
| Subject | Anesthesiology and Pain Medicine |
