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Electrocardiographic abnormalities in right ventricular infarction associated with right bundle branch block
The Canadian Journal of Cardiology
|June 1, 1997
Summary
This study documents an 80-year-old woman experiencing severe chest pain. Electrocardiograms revealed acute inferolateral and right ventricular infarction coexisting with her pre-existing complete right bundle branch block.
Area of Science:
- Cardiology
- Medical Diagnostics
Background:
- Complete right bundle branch block (CRBBB) can complicate the diagnosis of acute myocardial infarction.
- Inferolateral and right ventricular infarctions require specific diagnostic considerations.
Observation:
- An 80-year-old female patient presented with severe chest pain.
- Electrocardiography (ECG) utilized a 12-lead setup with additional right-sided chest leads.
- The ECG revealed CRBBB and ST-segment elevation in inferolateral leads (II, III, aVF) and right-sided precordial leads (V4R-V6R).
Findings:
- The patient exhibited electrocardiographic evidence of acute inferolateral myocardial infarction.
- Coexisting right ventricular infarction was identified.
- These findings were observed in the presence of pre-existing complete right bundle branch block.
Implications:
- Accurate diagnosis of acute myocardial infarction is crucial, even with pre-existing conduction abnormalities like CRBBB.
- The use of right-sided chest leads is vital for detecting right ventricular involvement in myocardial infarction.
- This case highlights the importance of comprehensive ECG interpretation in complex cardiac presentations.