PMID- 37200343 OWN - NLM STAT- MEDLINE DCOM- 20230522 LR - 20230605 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 18 IP - 5 DP - 2023 TI - Ultrasound evaluation of vagus nerve cross-sectional area in a community-dwelling elderly Japanese cohort. PG - e0280661 LID - 10.1371/journal.pone.0280661 [doi] LID - e0280661 AB - OBJECTIVES: Although the vagus nerve (VN) is easily observed by ultrasonography, few studies have evaluated the cross-sectional area (CSA) of the VN in healthy older individuals from East Asia. In this study, we aimed to report reference values for the CSA of the VN in community-dwelling elderly Japanese individuals and to identify any associated medical history and/or lifestyle factors. METHODS: The present study included 336 participants aged >/= 70 years from a prospective cohort study conducted in Yahaba, Japan from October 2021 to February 2022. The CSA of the VN was measured bilaterally at the level of the thyroid gland by ultrasonography. Simple linear regression analysis and generalized estimating equation were conducted to identify the associations between clinical and background factors and the CSA of the VN. RESULTS: In our cohort, the median CSA of the VN was 1.3 mm2 (interquartile range [IQR] 1.1-1.6) on the right side and 1.2 mm2 (IQR 1.0-1.4) on the left side. Generalized estimating equation showed that history of head injury (beta = 0.19, p < .01), current smoking habit (beta = -0.09, p = .03), and BMI (beta = 0.02, p < .01) were independently associated with the CSA of the VN. CONCLUSION: We have reported reference VN CSA values for community-dwelling elderly Japanese individuals. In addition, we showed that the CSA of the VN was positively associated with a history of head injury and BMI and inversely associated with current smoking habit. CI - Copyright: (c) 2023 Oura et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. FAU - Oura, Kazumasa AU - Oura K AUID- ORCID: 0000-0002-2693-7585 AD - Division of Neurology and Gerontology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Shiwa-Gun, Yahaba-Cho, Iwate, Japan. FAU - Akasaka, Hiroshi AU - Akasaka H AD - Division of Neurology and Gerontology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Shiwa-Gun, Yahaba-Cho, Iwate, Japan. FAU - Ishizuka, Naoki AU - Ishizuka N AD - Division of Neurology and Gerontology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Shiwa-Gun, Yahaba-Cho, Iwate, Japan. FAU - Sato, Yuriko AU - Sato Y AD - Division of Neurology and Gerontology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Shiwa-Gun, Yahaba-Cho, Iwate, Japan. FAU - Kudo, Masahiro AU - Kudo M AD - Division of Neurology and Gerontology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Shiwa-Gun, Yahaba-Cho, Iwate, Japan. FAU - Yamaguchi, Takashi AU - Yamaguchi T AD - Division of Neurology and Gerontology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Shiwa-Gun, Yahaba-Cho, Iwate, Japan. FAU - Oura, Mao Yamaguchi AU - Oura MY AD - Division of Neurology and Gerontology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Shiwa-Gun, Yahaba-Cho, Iwate, Japan. FAU - Itabashi, Ryo AU - Itabashi R AD - Division of Neurology and Gerontology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Shiwa-Gun, Yahaba-Cho, Iwate, Japan. FAU - Maeda, Tetsuya AU - Maeda T AD - Division of Neurology and Gerontology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Shiwa-Gun, Yahaba-Cho, Iwate, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230518 PL - United States TA - PLoS One JT - PloS one JID - 101285081 SB - IM MH - Aged MH - Humans MH - *East Asian People MH - Independent Living MH - Prospective Studies MH - Ultrasonography MH - *Vagus Nerve/anatomy & histology/diagnostic imaging MH - Reference Values PMC - PMC10194966 COIS- The authors have declared that no competing interests exist. EDAT- 2023/05/18 19:12 MHDA- 2023/05/22 06:42 PMCR- 2023/05/18 CRDT- 2023/05/18 13:44 PHST- 2023/01/11 00:00 [received] PHST- 2023/05/09 00:00 [accepted] PHST- 2023/05/22 06:42 [medline] PHST- 2023/05/18 19:12 [pubmed] PHST- 2023/05/18 13:44 [entrez] PHST- 2023/05/18 00:00 [pmc-release] AID - PONE-D-23-00238 [pii] AID - 10.1371/journal.pone.0280661 [doi] PST - epublish SO - PLoS One. 2023 May 18;18(5):e0280661. doi: 10.1371/journal.pone.0280661. eCollection 2023.