Saphenous vein valve assessment utilizing upright CT to potentially improve graft assessment for bypass surgery

Abstract Saphenous veins (SVs) are frequently employed as bypass grafts. The SV graft failure is predominantly seen at the valve site. Avoiding valves during vein harvest would help reduce graft failure. We endeavored to detect SV valves, tributaries, and vessel size employing upright computed tomog...

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Autores principales:	Takehiro Nakahara, Minoru Yamada, Yoichi Yokoyama, Yoshitake Yamada, Keiichi Narita, Nobuaki Imanishi, Masataka Yamazaki, Hideyuki Shimizu, Jagat Narula, Masahiro Jinzaki
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/63be87b63a2a4a2b9e0f1cc293cd1cba
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spelling	oai:doaj.org-article:63be87b63a2a4a2b9e0f1cc293cd1cba2021-12-02T15:56:50ZSaphenous vein valve assessment utilizing upright CT to potentially improve graft assessment for bypass surgery10.1038/s41598-021-90998-72045-2322https://doaj.org/article/63be87b63a2a4a2b9e0f1cc293cd1cba2021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90998-7https://doaj.org/toc/2045-2322Abstract Saphenous veins (SVs) are frequently employed as bypass grafts. The SV graft failure is predominantly seen at the valve site. Avoiding valves during vein harvest would help reduce graft failure. We endeavored to detect SV valves, tributaries, and vessel size employing upright computed tomography (CT) for the raw cadaver venous samples and in healthy volunteers. Five cadaver legs were scanned. Anatomical analysis showed 3.0 (IQR: 2.0–3.0) valves and 13.50 (IQR: 10.00–16.25) tributaries. The upright CT completely detected, compared to 2.0 (IQR: 1.5–2.5, p = 0.06) valves and 9.5 (IQR: 7.5–13.0, p = 0.13) tributaries by supine CT. From a total of 190 volunteers, 138 (men:75, women:63) were included. The number of valves from the SF junction to 35 cm were significantly higher in upright CT than in supine CT bilaterally [upright vs. supine, Right: 4 (IQR: 3–5) vs. 2 (IQR:1–2), p < 0.0001, Left: 4 (IQR: 3–5) vs. 2 (IQR: 1–2), p < 0.0001]. The number of tributaries and vessel areas per leg were also higher for upright compared with supine CT. Upright CT enables non-invasive detection of SV valves, tributaries, and vessel size. Although not tested here, it is expected that upright CT may potentially improve graft assessment for bypass surgery.Takehiro NakaharaMinoru YamadaYoichi YokoyamaYoshitake YamadaKeiichi NaritaNobuaki ImanishiMasataka YamazakiHideyuki ShimizuJagat NarulaMasahiro JinzakiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Takehiro Nakahara Minoru Yamada Yoichi Yokoyama Yoshitake Yamada Keiichi Narita Nobuaki Imanishi Masataka Yamazaki Hideyuki Shimizu Jagat Narula Masahiro Jinzaki Saphenous vein valve assessment utilizing upright CT to potentially improve graft assessment for bypass surgery
description	Abstract Saphenous veins (SVs) are frequently employed as bypass grafts. The SV graft failure is predominantly seen at the valve site. Avoiding valves during vein harvest would help reduce graft failure. We endeavored to detect SV valves, tributaries, and vessel size employing upright computed tomography (CT) for the raw cadaver venous samples and in healthy volunteers. Five cadaver legs were scanned. Anatomical analysis showed 3.0 (IQR: 2.0–3.0) valves and 13.50 (IQR: 10.00–16.25) tributaries. The upright CT completely detected, compared to 2.0 (IQR: 1.5–2.5, p = 0.06) valves and 9.5 (IQR: 7.5–13.0, p = 0.13) tributaries by supine CT. From a total of 190 volunteers, 138 (men:75, women:63) were included. The number of valves from the SF junction to 35 cm were significantly higher in upright CT than in supine CT bilaterally [upright vs. supine, Right: 4 (IQR: 3–5) vs. 2 (IQR:1–2), p < 0.0001, Left: 4 (IQR: 3–5) vs. 2 (IQR: 1–2), p < 0.0001]. The number of tributaries and vessel areas per leg were also higher for upright compared with supine CT. Upright CT enables non-invasive detection of SV valves, tributaries, and vessel size. Although not tested here, it is expected that upright CT may potentially improve graft assessment for bypass surgery.
format	article
author	Takehiro Nakahara Minoru Yamada Yoichi Yokoyama Yoshitake Yamada Keiichi Narita Nobuaki Imanishi Masataka Yamazaki Hideyuki Shimizu Jagat Narula Masahiro Jinzaki
author_facet	Takehiro Nakahara Minoru Yamada Yoichi Yokoyama Yoshitake Yamada Keiichi Narita Nobuaki Imanishi Masataka Yamazaki Hideyuki Shimizu Jagat Narula Masahiro Jinzaki
author_sort	Takehiro Nakahara
title	Saphenous vein valve assessment utilizing upright CT to potentially improve graft assessment for bypass surgery
title_short	Saphenous vein valve assessment utilizing upright CT to potentially improve graft assessment for bypass surgery
title_full	Saphenous vein valve assessment utilizing upright CT to potentially improve graft assessment for bypass surgery
title_fullStr	Saphenous vein valve assessment utilizing upright CT to potentially improve graft assessment for bypass surgery
title_full_unstemmed	Saphenous vein valve assessment utilizing upright CT to potentially improve graft assessment for bypass surgery
title_sort	saphenous vein valve assessment utilizing upright ct to potentially improve graft assessment for bypass surgery
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/63be87b63a2a4a2b9e0f1cc293cd1cba
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Saphenous vein valve assessment utilizing upright CT to potentially improve graft assessment for bypass surgery

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