Early Observations During the COVID-19 Pandemic in Cardiac Catheterization Procedures for ST-Elevation Myocardial Infarction Across Ontario Journal Articles uri icon

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  • BACKGROUND: In response to the COVID-19 pandemic, Ontario issued a declaration of emergency, implementing public health interventions on March 16, 2020. METHODS: We compared cardiac catheterization procedures for ST-elevation myocardial infarction (STEMI) between January 1 and May 10, 2020 to the same time frame in 2019. RESULTS: From March 16 to May 10, 2020, after implementation of provincial directives, STEMI cases significantly decreased by up to 25%. The proportion of patients who achieved guideline targets for first medical contact balloon for primary percutaneous coronary intervention (PCI) decreased substantially to 28% (median, 101 minutes) for patients who presented directly to a PCI site and to 37% (median, 149 minutes) for patients transferred from a non-PCI site, compared with 2019. CONCLUSIONS: STEMI cases across Ontario have been substantially affected during the COVID-19 pandemic.


  • Natarajan, Madhu K
  • Wijeysundera, Harindra C
  • Oakes, Garth
  • Cantor, Warren J
  • Miner, Steven ES
  • Welsford, Michelle
  • Cheskes, Sheldon
  • Le May, Michel R
  • Jeffrey, Jana
  • Ko, Dennis T

publication date

  • November 2020