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Blocked atrial bigeminy presenting with bradycardia
Celal Akdeniz1, Ibrahim Cansaran Tanidir, Volkan Tuzcu
1Department of Pediatric Cardiology, Mehmet Akif Ersoy Cardiovascular Research and Training Hospital, Istanbul, Turkey.
Congenital Heart Disease
|April 4, 2012
Summary
Frequent premature atrial contractions can cause symptomatic bradycardia. This case study shows successful treatment of bigeminal premature atrial contractions with propafenone, managing bradycardia effectively.
Area of Science:
- Cardiology
- Electrophysiology
- Pharmacology
Background:
- Premature atrial contractions (PACs) are common arrhythmias.
- PACs can sometimes lead to bradycardia through sinoatrial node modulation.
- Bigeminal patterns of PACs can exacerbate bradycardic effects.
Observation:
- A patient presented with symptomatic bradycardia.
- The bradycardia was associated with frequent premature atrial contractions in a bigeminal pattern.
- Sinoatrial node resetting by PACs was suspected as the underlying mechanism.
Findings:
- The patient's symptomatic bradycardia was successfully managed.
- Propafenone was administered as the treatment of choice.
- The antiarrhythmic drug effectively controlled the premature atrial contractions and resolved the bradycardia.
Implications:
- This case highlights propafenone as a viable treatment option for PAC-induced bradycardia.
- Understanding the mechanism of PACs on sinoatrial node function is crucial for management.
- Effective treatment of PACs can alleviate symptoms and prevent complications associated with bradycardia.
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