Complete Atrioventricular Block Caused by Retrograde Transaortic Approach.

Area of Science:

• Cardiology
• Electrophysiology
• Medical Devices

Background:

• Premature ventricular complexes (PVCs) can cause significant symptoms and require treatment.
• Catheter ablation is a common treatment for symptomatic PVCs.
• The retrograde transaortic approach is a method used in catheter ablation procedures.

Observation:

• A patient undergoing catheter ablation for PVCs experienced repeated complete atrioventricular block.
• The block occurred during attempted catheter crossing of the aortic valve.
• The retrograde transaortic approach was the suspected cause of the mechanical atrioventricular block.

Findings:

• The retrograde transaortic approach can lead to mechanical atrioventricular block.
• Careful catheter manipulation is crucial when crossing the aortic valve.
• Procedure abandonment may be necessary due to complications.

Implications:

• This case highlights a potential risk associated with the retrograde transaortic approach.
• Physicians should be aware of the possibility of mechanical atrioventricular block during this procedure.
• Further research may be needed to refine techniques and minimize risks.