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Combined bipolar dual chamber pacing and automatic implantable cardioverter/defibrillator
Insights
This study shows that combining automatic cardioverter/defibrillators with bipolar atrioventricular (AV) pacemakers is safe and effective. This approach successfully managed ventricular tachycardia and bradyarrhythmias in a patient with severe cardiac dysfunction.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Devices
Background:
- A 67-year-old male patient presented with recurrent hypotensive ventricular tachycardia.
- The patient also experienced amiodarone-induced bradyarrhythmias and severe cardiac dysfunction.
- This clinical scenario necessitated advanced therapeutic interventions.
Observation:
- Simultaneous implantation of an automatic cardioverter/defibrillator (ICD) and a bipolar atrioventricular (AV) pacemaker was performed.
- Pacing electrodes were strategically placed epicardially on the right atrial appendage and lateral right ventricular wall.
- The ICD's rate detector was positioned on the posterobasal left ventricular wall.
Findings:
- Effective bipolar AV pacing did not result in false heart rate counting by the ICD.
- The ICD successfully inhibited the pacemaker during episodes of ventricular tachycardia.
- Long-term follow-up confirmed the overall safety and efficacy of the combined device implantation.
Implications:
- Bipolar AV pacing can be safely integrated with automatic cardioverter/defibrillators.
- This combined approach offers a viable treatment option for complex cardiac arrhythmias.
- Careful patient selection and implantation techniques are crucial for successful outcomes.
Abstract:
A 67 year old man with recurrent hypotensive ventricular tachycardia, amiodarone-induced bradyarrhythmias and severe cardiac dysfunction underwent simultaneous implantation of an automatic cardioverter/defibrillator and bipolar atrioventricular (AV) pacemaker. The pacing electrodes were placed epicardially near the right atrial appendage and on the lateral right ventricular wall. The rate detector of the automatic defibrillator was placed epicardially on the posterobasal left ventricular wall. Effective bipolar AV pacing produced no false counting of the heart rate by the automatic cardioverter/defibrillator, and ventricular tachycardia properly inhibited the pacemaker. Long-term follow-up study confirmed the safety of this treatment. With proper precautions, bipolar AV pacing can be safely combined with an automatic cardioverter/defibrillator.