Myocardial infarction immediately following cardiovascular stress testing

Area of Science:

• Cardiology
• Clinical Medicine
• Diagnostic Imaging

Background:

• Acute myocardial infarction (AMI) diagnosis typically relies on clinical symptoms, electrocardiographic changes, and cardiac biomarkers.
• Treadmill exercise testing is a common non-invasive tool for evaluating patients with suspected coronary artery disease.

Observation:

• A 45-year-old male presented with atypical chest pain and experienced an AMI within 15 minutes of a negative treadmill exercise test.
• The patient's chest pain persisted despite afterload reduction, with electrocardiographic findings indicative of inferoapical myocardial infarction.

Findings:

• Coronary arteriography performed 3.5 months post-event revealed minimal obstructive coronary artery disease.
• The case demonstrates an acute myocardial infarction occurring despite a negative stress test and minimal coronary obstructions.

Implications:

• This case underscores the importance of considering myocardial infarction even with negative stress test results and atypical presentations.
• It highlights potential limitations of treadmill testing in specific scenarios and the need for comprehensive diagnostic evaluation.
• Further research may explore underlying mechanisms for myocardial infarction in the absence of significant obstructive coronary artery disease.