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Impact of multi-vessel versus single-vessel disease on outcomes after percutaneous coronary interventions for chronic total occlusions

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Abstract

Background

Successful chronic total occlusion (CTO) revascularization has been associated with prognostic benefits. Whether the extent of coronary artery disease interferes with these benefits has not been investigated yet.

Aims

We sought to compare the survival after percutaneous coronary intervention (PCI) for CTO between patients with multi- (MVD) and single-vessel disease (SVD).

Methods

A total of 2002 consecutive patients undergoing CTO PCI between 01/2005 and 12/2013 were identified and stratified according to the presence/absence of MVD. The primary endpoint was all-cause mortality. Median follow-up was 2.6 (interquartile range 1.1–3.1) years.

Results

A total of 1634 (81.6%) patients had MVD. Procedural success rates were 81.5 and 89.7% in the MVD and SVD groups (p < 0.001). All-cause mortality during entire follow-up was higher in MVD as compared to SVD patients (13.5 versus 5.7%, p < 0.001), and differences were attenuated after multivariable adjustment for baseline characteristics [adjusted hazard ratio (HR) 1.51, 95% CI 0.98–2.33, p = 0.06]. The effect of successful CTO PCI on all-cause mortality was consistent among patients with MVD [11.0 versus 24.5%; adjusted HR 0.60, 95% CI 0.45–0.80, p < 0.001] and SVD [5.2 versus 10.5%; adjusted HR 0.74, 95% CI 0.24–2.26, p = 0.59, P int = 0.65]. However, due to the greater baseline risk in the former group, the absolute survival benefit after successful CTO PCI was higher.

Conclusions

Successful recanalization of a CTO is a strong independent predictor for reduced long-term mortality. Due a higher baseline risk, the absolute benefit in patients with MVD is substantially larger than in patients with SVD.

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Author notes

    Authors and Affiliations

    1. Division of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen Suedring 15, 79189, Bad Krozingen, Germany

      Aurel Toma, Michael Gick, Cathérine Gebhard, Thomas Nührenberg, Kambis Mashayekhi, Miroslaw Ferenc, Franz-Josef Neumann & Heinz Joachim Buettner

    2. Department of Cardiology, Campus Benjamin Franklin, Charité-University Medicine Berlin, Berlin, Germany

      Barbara E. Stähli

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    1. Aurel Toma
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    2. Barbara E. Stähli
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    Correspondence to Aurel Toma.

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    A. Toma and B. E. Stähli have contributed equally.

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    Toma, A., Stähli, B.E., Gick, M. et al. Impact of multi-vessel versus single-vessel disease on outcomes after percutaneous coronary interventions for chronic total occlusions. Clin Res Cardiol 106, 428–435 (2017). https://doi.org/10.1007/s00392-016-1072-z

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    • DOI: https://doi.org/10.1007/s00392-016-1072-z

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