Clinical Scorecard: Infections as Potential Contributors to Acute Myocardial Infarction Risk: Insights from a Comprehensive Danish Cohort Analysis (1987-2018)

At a Glance

Key Highlights

• Pneumonia, urinary tract infection, and soft tissue/bone infections are associated with increased AMI risk, especially within 30 days post-infection.
• Highest relative AMI risk observed within first 0–30 days: pneumonia HR 3.39, UTI HR 2.44, soft tissue/bone infection HR 1.84.
• No significant association found for CNS infections and only a delayed association for endocarditis (31–90 days).

Guideline-Based Recommendations

Diagnosis

• Consider recent history of acute infections, especially pneumonia, UTI, and soft tissue/bone infections, when assessing AMI risk.
• Use hospital admission records and diagnostic codes to identify infection exposure in patients.

Management

• Monitor patients closely for cardiovascular symptoms within 30 days following acute infections known to increase AMI risk.
• Implement preventive cardiovascular strategies in patients hospitalized with pneumonia, UTI, or soft tissue/bone infections.

Monitoring & Follow-up

• Follow patients for up to 10 years post-infection for elevated AMI risk, with emphasis on the first 30 days.
• Use time-dependent risk assessment models to evaluate AMI risk changes over time after infection.

Risks

• Increased AMI risk is infection site-specific, highest for pneumonia, and present across all adult age groups.
• No increased AMI risk associated with CNS infections; endocarditis shows increased risk only between 31–90 days post-infection.

Patient & Prescribing Data

Adults hospitalized with first-time acute infections (pneumonia, UTI, soft tissue/bone infection, CNS infection, endocarditis) without prior AMI or ischemic heart disease.

No direct prescribing data reported; however, glucose-lowering and antihypertensive drug prescriptions were used to define comorbidities (diabetes, hypertension) relevant to AMI risk.

Clinical Best Practices

• Recognize acute infections, particularly pneumonia, as potential triggers for AMI and incorporate infection history into cardiovascular risk assessment.
• Prioritize early cardiovascular monitoring and preventive interventions within the first 30 days after hospitalization for pneumonia, UTI, or soft tissue/bone infections.
• Maintain long-term vigilance for AMI risk up to 10 years post-infection, adjusting care plans accordingly.
• Exclude patients with prior AMI or ischemic heart disease when evaluating infection-associated AMI risk to avoid confounding.

References

• Danish Civil Registration System
• Danish National Hospital Register
• Danish Registry of Causes of Death
• National Prescription Register