Left Anterior Descending Artery to Pulmonary Artery Fistula: A Case Report
Varun George1, Silvan Omerovic2, Mohan Madala3
1Internal Medicine, McLaren Greater Lansing, Lansing, USA.
Insights
This case highlights a rare ST-elevation myocardial infarction caused by an incidental finding of a coronary artery fistula. This unique scenario underscores the importance of thorough cardiac evaluation for acute coronary syndromes.
Area of Science:
- Cardiology
- Interventional Cardiology
- Diagnostic Imaging
Background:
- Acute coronary syndromes, including ST-elevation myocardial infarction (STEMI), are common cardiovascular emergencies.
- Coronary artery fistulas are abnormal connections between a coronary artery and a cardiac chamber or great vessel.
- STEMI secondary to coronary artery fistula is exceedingly rare.
Observation:
- A 59-year-old male presented with symptoms of stable angina, progressing to non-ST elevation myocardial infarction, and subsequently STEMI.
- Electrocardiogram (ECG) revealed ST elevations in anterolateral leads, necessitating emergent cardiac catheterization.
- Coronary angiography demonstrated a proximal left anterior descending artery (LAD) lesion and an abnormal communication with the pulmonary artery.
Findings:
- The patient was diagnosed with a coronary artery fistula.
- The coronary artery fistula was identified incidentally during evaluation for STEMI.
- This represents a unique etiology for STEMI.
Implications:
- Coronary artery fistulas should be considered in the differential diagnosis of acute coronary syndromes, even in the absence of typical risk factors.
- This case underscores the importance of thorough angiographic evaluation in STEMI.
- Further research into the relationship between coronary artery fistulas and myocardial infarction is warranted.
Abstract:
This case describes a 59-year-old patient who initially presented with symptoms consistent with stable angina and a subsequent diagnosis of non-ST elevation myocardial infarction with further conversion to an ST-elevation myocardial infarction. A left cardiac catheterization was scheduled to evaluate the patient's acute coronary syndrome. He later developed worsening chest pain and a repeat electrocardiogram (ECG) showed ST elevations in anterolateral leads. The patient was emergently transported to the cardiac catheterization lab. The coronary angiogram revealed a proximal left anterior descending artery (LAD) lesion. During the catheterization, abnormal communication between the LAD and the pulmonary artery was discovered and the patient was diagnosed with a coronary artery fistula. This case presents a unique scenario for an ST-elevation myocardial infarction with an incidental diagnosis of a coronary artery fistula.
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