Differential clinical impact of chronic total occlusion revascularization based on left ventricular systolic function

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ORIGINAL PAPER

Differential clinical impact of chronic total occlusion revascularization based on left ventricular systolic function Hyungdon Kook1 · Jeong Hoon Yang2 · Jae Young Cho3 · Duck Hyun Jang1 · Min Sun Kim4 · Juneyoung Lee4 · Seung Hun Lee5 · Hyung Joon Joo1 · Jae Hyoung Park1 · Soon Jun Hong1 · Je Sang Kim5 · Hyun Jong Lee5 · Rak Kyeong Choi5 · Young Jin Choi5 · Jin Sik Park5 · Young Bin Song2 · Jin‑Ho Choi2 · Joo‑Yong Hahn2 · Hyeon‑Cheol Gwon2 · Do‑Sun Lim1 · Seung‑Hyuk Choi2 · Cheol Woong Yu1  Received: 29 June 2020 / Accepted: 26 August 2020 © The Author(s) 2020

Abstract Background  The effect of chronic total occlusion (CTO) revascularization on survival remains controversial. Furthermore, data regarding outcome differences for CTO revascularization based on left ventricular systolic function (LVSF) are limited. The differential outcomes from CTO revascularization in patients with preserved LVSF (PLVSF) versus reduced LVSF (RLVSF) were assessed. Methods  A total of 2,173 CTO patients were divided into either a PLVSF (n = 1661, Ejection fraction ≥ 50%) or RLVSF (n = 512,