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Author Spotlight: Enhancing Coronary Artery Revascularization
05:25

Author Spotlight: Enhancing Coronary Artery Revascularization

Published on: September 15, 2023

749

Impact of complete revascularization in coronary artery bypass grafting for ischemic cardiomyopathy

Masaro Nakae1, Satoshi Kainuma1, Koichi Toda1

  • 1Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Suita, Osaka, Japan.

JTCVS Open
|October 9, 2023
PubMed

Insights

Complete revascularization via coronary artery bypass grafting significantly improves long-term survival and left ventricular function in ischemic cardiomyopathy patients. This approach should be prioritized for better patient outcomes.

Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Clinical Outcomes Research

Background:

  • Coronary artery bypass grafting (CABG) improves survival in ischemic cardiomyopathy compared to medical therapy.
  • The long-term impact of complete versus incomplete revascularization in these patients remains incompletely understood.

Purpose of the Study:

  • To evaluate the long-term effects of complete revascularization on survival and left ventricular functional recovery.
  • To compare outcomes between complete and incomplete myocardial revascularization in patients with ischemic cardiomyopathy undergoing CABG.

Main Methods:

  • Retrospective review of 498 patients with ischemic cardiomyopathy undergoing CABG between 1993 and 2015.
  • Patients were categorized into complete (n=386) or incomplete (n=112) revascularization groups.
  • Inverse probability of treatment weighting was used for adjusting baseline characteristics and reducing treatment bias.

Main Results:

  • Complete revascularization was associated with significantly higher 5-year survival rates (72.5% vs. 57.9%) and improved freedom from death/heart failure readmission (54.5% vs. 40.1%).
  • Adjusted analyses showed complete revascularization lowered the risk of all-cause death (HR, 0.61) and composite adverse events (HR, 0.59).
  • A greater improvement in left ventricular ejection fraction was observed 1 year post-CABG in the complete revascularization group (11.0% vs. 8.3%).

Conclusions:

  • Complete revascularization in ischemic cardiomyopathy patients undergoing CABG is linked to superior long-term survival and better left ventricular functional recovery.
  • This study supports the recommendation to pursue complete revascularization whenever feasible in this patient population.
Abstract

Keywords:
complete revascularizationcoronary artery bypass graftingischemic cardiomyopathyleft ventricular functionlong-term follow-up

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