Transient right axis deviation with left posterior hemiblock and junctional rhythm during acute myocardial infarction
Insights
Transient left posterior hemiblock and changing axis deviation during acute myocardial infarction are rare but documented. This case highlights these phenomena in a patient with left anterior descending coronary artery stenosis, emphasizing the dynamic nature of cardiac electrical changes during infarction.
Area of Science:
- Cardiology
- Cardiac Electrophysiology
Background:
- Coronary artery disease frequently causes hemiblocks, with anteroseptal myocardial infarction often linked to left anterior hemiblock.
- Changing axis deviation during acute myocardial infarction has been associated with atrial fibrillation.
Observation:
- This report details a rare case of transient left posterior hemiblock pattern and transient right axis deviation.
- The patient, a 61-year-old man, experienced these during acute myocardial infarction with significant left anterior descending coronary artery stenosis.
Findings:
- The case presents transient changing axis deviation, transient right axis deviation, and a transient left posterior hemiblock pattern.
- A transient junctional rhythm was also observed in the patient.
Implications:
- This case underscores the potential for dynamic and unusual electrical abnormalities during acute myocardial infarction.
- Understanding these transient changes is crucial for accurate diagnosis and management of myocardial infarction and associated arrhythmias.
Abstract:
One of the most common causes of hemiblocks is coronary artery disease, and there is a particularly frequent association between anteroseptal myocardial infarction and left anterior hemiblock. Changing Axis Deviation has been reported during acute myocardial infarction also associated with atrial fibrillation. Isolated left posterior hemiblock is a very rare finding but the evidence of transient right axis deviation with a left posterior hemiblock pattern has been reported during acute anterior myocardial infarction as related with significant right coronary artery obstruction and collateral circulation between the left coronary system and the posterior descending artery. We present a case of transient changing axis deviation, transient right axis deviation, transient left posterior hemiblock pattern and transient junctional rhythm too in a 61-year-old Italian man with acute myocardial infarction and a significant left anterior descending coronary artery stenosis.
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