Jin Seok-Joon, Choi Yoon-Ji, Park Sang-Wook, Lee Yu-Mi
Department of Anaesthesiology and Pain Medicine, University of Ulsan College of Medicine, Asan Medical Centre, Seoul, Republic of Korea.
Department of Dental Anaesthesiology, Seoul National University Dental Hospital, Seoul, Republic of Korea.
J Int Med Res. 2015 Jun;43(3):460-7. doi: 10.1177/0300060515576012. Epub 2015 Apr 13.
To measure the migration of oral Ring-Adair-Elwyn (RAE) preformed tracheal tubes during neck extension compared with the neutral neck position, and to assess the correlation between changes in the thyromental distance (TMD) during changes in neck position and tracheal tube migration.
This prospective observational study enrolled adult patients undergoing elective neck or thyroid procedures below the mandible. Using fibreoptic bronchoscopy, distances from the RAE tube adapter to the carina and to the tube tip were measured in the neutral position and after neck extension with a 10 cm D-shaped gel shoulder positioner. The change in distance of the RAE tube tip migration was compared with the change in TMD in each patient.
This study enrolled 106 patients. During neck extension with a 10-cm shoulder positioner, RAE tubes cranially migrated 2.7 cm from the neutral position, but RAE tube migration was not correlated with the change in external TMD.
Oral RAE tube migration was not significantly correlated with the change in external TMD. Due to their large variability, changes in TMD were not useful predictors of RAE tube migration.
测量口腔环-阿代尔-埃尔温（RAE）预制气管导管在颈部伸展时相对于颈部中立位的移位情况，并评估颈部位置改变时甲状软骨-颏下距离（TMD）变化与气管导管移位之间的相关性。
这项前瞻性观察性研究纳入了接受下颌骨以下择期颈部或甲状腺手术的成年患者。使用纤维支气管镜，在中立位以及使用10厘米D形凝胶肩部定位器使颈部伸展后，测量RAE导管接头至隆突以及至导管尖端的距离。比较每位患者RAE导管尖端移位距离的变化与TMD的变化。
本研究纳入了106例患者。在使用10厘米肩部定位器使颈部伸展时，RAE导管从中立位向上移位2.7厘米，但RAE导管移位与外部TMD的变化无关。
口腔RAE导管移位与外部TMD的变化无显著相关性。由于TMD变化差异较大，因此TMD变化并非RAE导管移位的有效预测指标。
