Prediction of the Difficult Laryngoscopy with Ultrasound Measurements of Hyomental Distance
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Published:2022-06-01
Issue:3
Volume:76
Page:372-376
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ISSN:2255-890X
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Container-title:Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.
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language:en
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Short-container-title:
Author:
Glāzniece-Kagane Zane1, Bērziņš Arvīds12, Kagans Aleksandrs1, Grigorjevs Sergejs1, Ozoliņa Agnese12, Mamaja Biruta12
Affiliation:
1. Clinic of Anaesthesiology , Rīga East Clinical University Hospital , 2 Hipokrāta Str ., Rīga , , Latvia 2. Faculty of Medicine , Rīga Stradiņš University , 16 Dzirciema Str ., Rīga , , Latvia
Abstract
Abstract
Ultrasound measurement of hyomental distance is promising as a predictor for difficult laryngoscopy in cases of difficult airway management. The aim of the study was to evaluate the prognostic value of ultrasound measurement of hyomental distance (HMD) for prediction of difficult laryngoscopy. Hyomental distance was sonographically measured in neutral (HMDn) and extreme head extension (HMDe) positions for fifty-six patients scheduled for elective surgery requiring tracheal intubation. Then the hyomental distance ratio (HMDR) was calculated. According to presence of difficult laryngoscopy assessed by the Cormack–Lehane (CL) score, patients were divided into a difficult laryngoscopy group (DL, n = 15) and easy laryngoscopy group (EL, n = 41). We calculated the sensitivity and specificity of HMDn, HMDe, and HMDR for difficult laryngoscopy. DL was present in 15 (27%) patients. We found a significant intergroup difference in HMDR between the DL and EL groups (1.12 ± 0.04 vs. 1.24 ± 0.06, respectively; p < 0.001). In contrast, we were not able to find a significant difference for HMDn and HMDr. HMDR had the highest sensitivity 86.7% and specificity 85.4% (p < 0.01) to predict difficult laryngoscopy, where the area under the curve was 0.939; p < 0.01 for HDMR < 1.2 cm. Moreover, we found that difficult laryngoscopy was associated with higher body mass index (BMI), with higher values in the DL group compared to EL patients (34.3 ± 9.1 vs. 28.5 ± 5.7 kg/m2, respectively; p = 0.035). HMDR < 1.2 cm measured by ultrasound might have a good predictive value for prediction of difficult laryngoscopy.
Publisher
Walter de Gruyter GmbH
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