Influence of the Single Coronary Vessel on Acute Outcomes of In-Stent CTO Recanalization
Jan-Erik Guelker1,2, Christian Blockhaus2,3, Edward Kemala1
1Department of Cardiology and Rhythmology, Petrus Hospital, 42283 Wuppertal, Germany.
Insights
Recanalization of in-stent chronic total occlusions (IS-CTO) via percutaneous coronary intervention (PCI) shows similar safety and success rates regardless of the specific coronary vessel involved. These complex interventions are feasible and safe across different coronary anatomies.
Area of Science:
- Cardiology
- Interventional Cardiology
- Vascular Medicine
Background:
- In-stent chronic total occlusions (IS-CTO) present significant challenges in percutaneous coronary intervention (PCI).
- Existing literature shows inconsistent outcomes for IS-CTO recanalization.
- Understanding vessel-specific influences on IS-CTO PCI outcomes is crucial for improving procedural success and patient safety.
Purpose of the Study:
- To investigate the impact of individual coronary vessels on acute outcomes after IS-CTO PCI.
- To compare the safety and technical success rates of IS-CTO recanalization across different coronary arteries (LAD, LCX, RCA).
Main Methods:
- Retrospective observational study of 66 patients undergoing IS-CTO recanalization.
- Procedures performed using a bi-femoral approach with 7-French guiding catheters.
- Composite endpoint included severe complications such as emergency coronary artery bypass grafting (CABG) and cardiac death.
Main Results:
- The retrograde technique and extension catheters were more frequently used in Right Coronary Artery (RCA) IS-CTOs.
- No significant differences were observed in composite safety endpoints among the Left Anterior Descending (LAD), Left Circumflex (LCX), and RCA groups.
- Technical success rates were independent of the specific coronary vessel occluded.
Conclusions:
- Acute outcomes, including success and complication rates, are not significantly influenced by the specific coronary vessel involved in IS-CTO.
- Percutaneous coronary intervention for IS-CTO is a feasible and safe complex coronary intervention.
- These findings support the generalizability of IS-CTO PCI techniques across different coronary territories.
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.
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