Volume 9, Pages 64-67 (September 2017) Topographical features of the vagal nerve at the cervical level in an aging population evaluated by ultrasound Akinori Inamura, MD, Sadahiro Nomura, MD, PhD, Hirokazu Sadahiro, MD, PhD, Hirochika Imoto, MD, PhD, Hideyuki Ishihara, MD, PhD, Michiyasu Suzuki, MD, PhD Interdisciplinary Neurosurgery: Advanced Techniques and Case Management Volume 9, Pages 64-67 (September 2017) DOI: 10.1016/j.inat.2017.03.006 Copyright © 2017 The Authors Terms and Conditions
Fig. 1 Axial ultrasonography of the carotid sheath. A vagal nerve (VN) located deeper than the line connecting the centers of common carotid artery (CCA) and internal jugular vein (JV), or line C, was defined as the deep type (A) and a VN superficial to line C was defined as the superficial type (B). Interdisciplinary Neurosurgery: Advanced Techniques and Case Management 2017 9, 64-67DOI: (10.1016/j.inat.2017.03.006) Copyright © 2017 The Authors Terms and Conditions
Fig. 2 Scatter plot of patient age and the distance between the VN and line C. Positive distance indicates the VN is deeper than line C. The regression line indicates a weak correlation between the distance and age of the patients (R=0.246, p<0.001). Interdisciplinary Neurosurgery: Advanced Techniques and Case Management 2017 9, 64-67DOI: (10.1016/j.inat.2017.03.006) Copyright © 2017 The Authors Terms and Conditions
Fig. 3 Ultrasound of the VN taken in a neutral (A) and rotated head position (B). The location of the VN is the same regardless of the head position. Interdisciplinary Neurosurgery: Advanced Techniques and Case Management 2017 9, 64-67DOI: (10.1016/j.inat.2017.03.006) Copyright © 2017 The Authors Terms and Conditions
Fig. 4 Intraoperative photo of the VN in a deep type (A) and superficial type (B). CCA: common carotid artery, VN: vagal nerve, JV: Jugular vein. Interdisciplinary Neurosurgery: Advanced Techniques and Case Management 2017 9, 64-67DOI: (10.1016/j.inat.2017.03.006) Copyright © 2017 The Authors Terms and Conditions