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Differences in Revascularization Strategy and Outcomes by Clinical Presentations in Spontaneous Coronary Artery

Taku Inohara1, Cameron McAlister1, Rohit Samuel1

  • 1Division of Cardiology, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada.

The Canadian Journal of Cardiology
|July 19, 2022
PubMed

Insights

Revascularization in spontaneous coronary artery dissection (SCAD) has higher initial risks but similar 1-year MACE for STEMI vs. UA-NSTEMI. Careful patient selection for SCAD revascularization is crucial, especially in UA-NSTEMI.

Area of Science:

  • Cardiology
  • Vascular Medicine
  • Interventional Cardiology

Background:

  • Spontaneous coronary artery dissection (SCAD) is a significant cause of myocardial infarction (MI).
  • The optimal revascularization strategy for SCAD based on clinical presentation remains uncertain.

Purpose of the Study:

  • To compare revascularization strategies and clinical outcomes in SCAD patients presenting with ST-elevation MI (STEMI) versus unstable angina/non-STEMI (UA-NSTEMI).

Main Methods:

  • Analysis of patients from the Canadian SCAD Cohort Study presenting with acute SCAD.
  • Comparison of revascularization rates and in-hospital/1-year major adverse cardiovascular events (MACE) between STEMI and UA-NSTEMI groups.

Main Results:

  • SCAD patients presenting with STEMI (31.2%) received revascularization more often (27.8%) than UA-NSTEMI patients (8.7%).
  • Revascularization was associated with higher in-hospital adverse events, particularly in the UA-NSTEMI group.
  • Despite initial event differences, 1-year MACE was comparable between STEMI and UA-NSTEMI SCAD patients who underwent revascularization.

Conclusions:

  • Revascularization in SCAD, while carrying higher initial risks, does not lead to different 1-year MACE rates between STEMI and UA-NSTEMI presentations.
  • The findings support the use of revascularization for ongoing ischemia in STEMI-SCAD.
  • Emphasizes the importance of judicious patient selection for revascularization in UA-NSTEMI SCAD.
Abstract

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