IMR Press / RCM / Volume 23 / Issue 7 / DOI: 10.31083/j.rcm2307249
Open Access Original Research
Influence of the Single Coronary Vessel on Acute Outcomes of In-Stent CTO Recanalization
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1 Department of Cardiology and Rhythmology, Petrus Hospital, 42283 Wuppertal, Germany
2 Faculty of Health, University Witten/Herdecke, 58455 Witten, Germany
3 Department of Cardiology, Helios Clinic, 47805 Krefeld, Germany
4 Department of Cardiology, Johanna Etienne Hospital, 41462 Neuss, Germany
*Correspondence: (Jan-Erik Guelker)
These authors contributed equally.
Academic Editors: George Dangas and Christian Hengstenberg
Rev. Cardiovasc. Med. 2022, 23(7), 249;
Submitted: 7 April 2022 | Revised: 5 May 2022 | Accepted: 26 May 2022 | Published: 29 June 2022
(This article belongs to the Special Issue Recent Advances in Percutaneous Coronary Intervention)
Copyright: © 2022 The Author(s). Published by IMR Press.
This is an open access article under the CC BY 4.0 license.

Objective: Recanalization of in-stent chronic total occlusion (IS-CTO) is challenging and has resulted in inconsistent results. The aim of our study was to analyze the influence of the individual coronary vessels on the acute outcomes following IS-CTO PCI. Methods: This was an observational retrospective study, including 66 patients undergoing recanalization of a CTO. The CTO interventions were performed bi-femoral using 7-French guiding catheters. A composite endpoint summarizing severe complications was evaluated, including emergency coronary artery bypass grafting surgery (CABG) and cardiac death. Results: We subdivided our cohort into three groups (LAD group, LCX group, RCA group). The retrograde technique and the utilization of an extension catheter were used more frequently in patients with a RCA IS-CTO. There was no significant difference between the composite safety endpoints amongst the three groups. Technical success was independent of the involved vessel. Conclusions: Success and complication rates are independent of the occluded vessel. This challenging and complex coronary intervention is feasible and can be carried out in complete safety.

in-stent chronic total occlusion
percutaneous coronary intervention
single coronary artery
acute outcome
Fig. 1.
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