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Intracoronary Acetylcholine Provocation Testing for Assessment of Coronary Vasomotor Disorders
Published on: August 18, 2016
Postmyocardial infarction angina and coronary spasm
The American Journal of Cardiology
|July 1, 1982
Summary
Coronary artery spasm, a cause of chest pain and myocardial infarction, can also trigger angina early after a heart attack. This study demonstrates coronary vasospasm as a cause of postinfarction angina in three patients.
Area of Science:
- Cardiology
- Vascular Medicine
Background:
- Chest pain following myocardial infarction (MI) can have various causes.
- Coronary artery spasm is a recognized cause of chest pain and MI, but its role in the early postinfarction period is less understood.
Observation:
- Three patients presented with chest pain within 1 day to 3 weeks after MI.
- Coronary artery spasm was diagnosed in all three patients using ergonovine maleate provocation.
- Spasm occurred in the infarct-related artery in two patients and a remote vessel in one.
Findings:
- Ergonovine maleate testing confirmed coronary vasospasm as the cause of chest pain in these post-MI patients.
- Two patients required intracoronary nitroglycerin to restore blood flow in the affected coronary artery.
- The findings highlight coronary vasospasm as a potential cause of angina in the early post-MI phase.
Implications:
- Clinicians should consider coronary vasospasm in the differential diagnosis of chest pain occurring early after myocardial infarction.
- Early identification and treatment of coronary vasospasm may prevent recurrent ischemia and improve outcomes in post-MI patients.
- Further research is warranted to elucidate the mechanisms and prevalence of coronary vasospasm in the post-MI setting.
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