Port-a-Cath Revision

Background and indications

Port-a-cath revision encompasses interventions needed to manage dysfunctions of an already implanted device: catheter occlusion, secondary tip displacement, catheter fracture, or device removal at treatment end or for complications (infection, thrombosis).

Pre-procedure assessment

Assessment includes chest radiograph (looking for displacement, fracture, pinch-off), device aspiration/injection test, Doppler ultrasound if thrombosis suspected, and blood cultures if catheter-related infection suspected.

Procedure

For catheter occlusion: fibrinolytic injection (alteplase) into the chamber, left in contact 30-60 minutes, then patency test. For displacement: repositioning under fluoroscopy using a snare catheter introduced through the femoral vein, or catheter replacement. For removal: under local anesthesia, the chamber is exposed through the old scar, disconnected from the catheter, and both elements removed. The procedure takes 15 to 45 minutes depending on the intervention.

Results and scientific evidence

Fibrinolytic declotting success rate is 75-90%. Endovascular repositioning succeeds in 85-95% of cases. Removal is a simple procedure with 100% success rate in the absence of massive fibrin sleeve.

Risks and complications

Complications are rare: local bleeding during removal (controlled by compression), residual catheter fragment in case of old fracture (requiring endovascular snare retrieval). Removal is generally painless under local anesthesia.

Recovery

Immediate return to activities. Simple dressing on the scar for 5-7 days. If a new device is needed, it can be implanted in the same session or later.

Practical information

The procedure is performed on an outpatient basis. It is performed by an interventional radiologist.