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Acute inferior wall myocardial infarction associated with complete atrioventricular block and left posterior
Insights
Acute inferior myocardial infarction can cause a distinct syndrome of complete atrioventricular block with junctional escape rhythm and left posterior hemiblock. This suggests a specific location for the subsidiary pacemaker in the His bundle or left bundle branch.
Area of Science:
- Cardiology
- Electrophysiology
- Cardiac Pathology
Background:
- Acute inferior wall myocardial infarction is a critical cardiac event.
- Atrioventricular block can complicate myocardial infarction.
- Left posterior hemiblock is a specific type of conduction abnormality.
Purpose of the Study:
- To present three cases of a specific clinical triad.
- To identify a distinct syndrome associated with inferior myocardial infarction.
- To postulate the origin of the subsidiary pacemaker.
Main Methods:
- Case study presentation.
- Clinical observation.
- Electrocardiographic analysis.
Main Results:
- Three patients presented with acute inferior wall myocardial infarction.
- All patients exhibited complete atrioventricular block.
- Left posterior hemiblock and junctional escape rhythm were observed in all cases.
Conclusions:
- The triad of inferior myocardial infarction, complete atrioventricular block, and left posterior hemiblock may represent a distinct syndrome.
- The subsidiary pacemaker is likely located in the His bundle or proximal left bundle branch.
Abstract:
Three cases of acute inferior wall myocardial infarction associated with complete atrioventricular block and junctional escape rhythm showing left posterior hemiblock are presented. The triad appears to consitiute a distinct syndrome. It is postuated that the subsidiary pacemaker is situated either in the bundle of His or the proximal part of the anterior division of the left bundle-branch.