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Bacterial endocarditis presenting as acute myocardial infarction: a cautionary note for the era of reperfusion
C A Herzog1, T D Henry, S D Zimmer
1Department of Medicine, Hennepin County Medical Center, Minneapolis, Minnesota 55415.
Insights
Bacterial endocarditis can cause acute myocardial infarction (heart attack) due to coronary embolism. Coronary angioplasty in these cases may lead to complications like mycotic aneurysms or hemorrhage.
Area of Science:
- Cardiology
- Infectious Diseases
- Interventional Cardiology
Background:
- Coronary embolism is a recognized complication of bacterial endocarditis, potentially leading to acute myocardial infarction.
- Diagnosis of endocarditis may be delayed due to the urgent need for reperfusion in acute myocardial infarction.
- Bacterial endocarditis can manifest with coronary artery complications, including mycotic aneurysms.
Observation:
- This report details the first documented cases of coronary angioplasty in patients with acute myocardial infarction secondary to bacterial endocarditis.
- The first patient developed a mycotic aneurysm at the coronary angioplasty site.
- The second patient experienced an intracerebral hemorrhage post-reperfusion therapy.
Findings:
- Coronary angioplasty, a standard reperfusion strategy, carries unique risks when performed in the context of bacterial endocarditis-induced myocardial infarction.
- Complications observed include the formation of mycotic aneurysms and intracranial hemorrhage.
- These findings highlight potential adverse outcomes associated with conventional reperfusion in specific endocarditis cases.
Implications:
- Clinical decisions regarding coronary reperfusion in suspected endocarditis-related myocardial infarction should consider the increased risk of specific complications.
- Further research is warranted to establish optimal management strategies for acute myocardial infarction caused by bacterial endocarditis.
- Physicians should exercise caution and consider alternative approaches or heightened surveillance when performing coronary interventions in patients with suspected endocarditis.
Abstract:
Coronary embolism is a known complication of bacterial endocarditis that sometimes causes acute myocardial infarction. The necessity for rapidly restoring coronary artery perfusion and the time constraints governing clinical decisions may prevent endocarditis from being diagnosed before pharmacologic or mechanical thrombolysis. This report describes the first documented cases of coronary angioplasty in two patients with acute myocardial infarction caused by bacterial endocarditis, and reviews the literature on coronary artery complications of bacterial endocarditis. The first patient developed a coronary artery mycotic aneurysm at the dilatation site; the second experienced a small intracerebral hemorrhage following reperfusion. It is, of course, unwise to generalize from two cases, but we believe that in patients who are most likely to have endocarditis as the cause of acute myocardial infarction, the impulse to follow conventional strategies for coronary reperfusion should be tempered by thoughts of possible consequences.