Open Access

ARTICLE

Impact of Coronary Artery Curvature on the Longitudinal Stent Foreshortening: Real-World Observations

Yang Li^1,#, Runxin Fang^2,#, Renyun Wang¹, Qiming Dai¹, Zhiyong Li^2,*, Genshan Ma¹

1 Department of Cardiology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, 210009, China
2 School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China

* Corresponding Author: Zhiyong Li. Email:
# These authors contributed equally to this work

Molecular & Cellular Biomechanics 2021, 18(3), 119-122. https://doi.org/10.32604/mcb.2021.017503

Received 15 May 2021; Accepted 21 June 2021; Issue published 15 July 2021

Abstract

Longitudinal stent foreshortening is a known phenomenon, however, the impact of coronary artery curvature on longitudinal stent foreshortening remains unclear. The aim of this study is to determine the impact of coronary artery curvature on the longitudinal stent foreshortening in the real-world scenarios. A total of 86 consecutive patients underwent coronary stent implantation were included in the present study. The degree of coronary artery curvature was defined as the length of the coronary artery curvature divided by the straight length. Longitudinal stent foreshortening was defined as the stent length after implantation divided by the stent length before implantation. The mean longitudinal foreshortening rate of coronary stents was about 94% in curved coronary arteries. Longitudinal stent foreshortening rate was positively correlated with the degree of coronary artery curvature (r = –0.86, P < 0.01). Coronary artery curvature is associated with significant longitudinal foreshortening of coronary stents, thus longitudinal foreshortening should be considered on deciding the stent length in curved coronary artery and a longer stent is usually needed in curved coronary artery.

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Keywords

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