Clinical Scorecard: Impact of Recent COVID-19 on Mortality Rates Following Myocardial Infarction: Findings from a Nationwide Danish Cohort Analysis

At a Glance

Key Highlights

• Recent COVID-19 infection within 90 days before or 1 day after MI is associated with increased 30-day mortality after MI.
• The increased mortality risk is significant in unvaccinated patients but not in those with prior COVID-19 vaccination.
• COVID-19 vaccination appears to mitigate the elevated short-term mortality risk after MI associated with recent COVID-19.

Guideline-Based Recommendations

Diagnosis

• Identify recent COVID-19 infection by positive PCR test within 90 days before to 1 day after MI.

Management

• Consider recent COVID-19 status when assessing prognosis after MI.
• Prioritize COVID-19 vaccination in patients at risk for cardiovascular events to reduce post-MI mortality.

Monitoring & Follow-up

• Monitor MI patients with recent COVID-19 closely for increased short-term mortality risk, especially if unvaccinated.

Risks

• Unvaccinated MI patients with recent COVID-19 have higher 30-day and 180-day mortality risks.
• COVID-19 vaccination does not increase short- or long-term risk of MI.

Patient & Prescribing Data

Adults admitted with first-time MI, stratified by recent COVID-19 infection and vaccination status

COVID-19 vaccination prior to MI reduces the elevated mortality risk associated with recent COVID-19 infection.

Clinical Best Practices

• Screen MI patients for recent COVID-19 infection to inform risk stratification.
• Encourage COVID-19 vaccination in patients with cardiovascular disease to improve MI outcomes.
• Use comprehensive registry data to adjust for confounders such as age, sex, comorbidities, and medication use in prognosis assessment.

References

• Danish National Patient Registry
• Statens Serum Institut COVID-19 Data
• Danish Civil Registration System