CPT® Code 35180

1. Indications

The procedure for repairing a congenital arteriovenous fistula is indicated in the following situations:

• Congenital arteriovenous fistula Present at birth, this condition requires intervention to prevent complications associated with abnormal blood flow.
• Cardiovascular complications The abnormal communication can lead to various cardiovascular issues, necessitating repair to restore normal blood flow dynamics.
• Enlargement of venous walls The stretching of venous walls due to high-pressure arterial blood flow can lead to further complications, making surgical repair essential.

2. Procedure

The procedure for repairing a congenital arteriovenous fistula involves several critical steps:

• Angiography Prior to the surgical repair, a separate angiography is performed to delineate the course of the arteriovenous fistula. This imaging technique provides essential information about the anatomy and extent of the fistula, guiding the surgical approach.
• Exposure and dissection The surgeon then exposes the fistula by making an incision in the appropriate area. Careful dissection is performed to free the fistula from surrounding tissues, ensuring that the surgical field is clear for the repair.
• Clamping Once the fistula is adequately exposed, clamps are placed on both the artery and vein. This step is crucial as it isolates the fistula, preventing blood flow during the repair process.
• Severing the fistula The abnormal communication between the artery and vein is then severed. This step is essential to eliminate the high-pressure flow from the artery into the vein.
• Repairing the vessels After severing the fistula, the surgeon repairs the artery and vein. This can be accomplished using sutures to close the vessels directly, or alternatively, a synthetic patch or vein graft may be employed to facilitate the repair.
• Checking hemostasis Once the repairs are made, the clamps are removed, and the surgeon checks for hemostasis to ensure that there is no bleeding at the repair site.
• Closure of overlying tissues Finally, the overlying tissues are closed in layers to complete the procedure, ensuring proper healing and minimizing scarring.

3. Post-Procedure

After the repair of a congenital arteriovenous fistula, patients typically require monitoring for any signs of complications, such as bleeding or infection. The recovery process may involve pain management and follow-up appointments to assess the success of the repair and the overall vascular health. Patients may also be advised on activity restrictions during the initial recovery phase to promote healing and prevent strain on the surgical site.