Port-a-Cath Placement

Background and indications

A port-a-cath (PAC) or implantable port is a totally implantable central venous access device, composed of a titanium chamber connected to a silicone catheter with its tip in the superior vena cava. It is designed for long-term venous access (months to years) and allows administration of chemotherapy, parenteral nutrition, antibiotics, blood products, and repeated blood sampling.

It is the reference device for anticancer chemotherapy, ensuring reliable and comfortable access for the patient throughout treatment duration.

Pre-procedure assessment

Assessment includes coagulation panel (PT, aPTT, platelets > 50,000/mm³), CBC, neck vein Doppler if prior central catheter, and verification of absence of active infection.

Procedure

Under local anesthesia and light sedation, the right internal jugular vein (or subclavian, or cephalic at deltopectoral groove) is punctured under ultrasound guidance. The catheter is advanced under fluoroscopy to the SVC-right atrium junction. A subcutaneous pocket is created below the clavicle to implant the chamber, which is connected to the catheter and sutured. Final position is verified by fluoroscopy. The procedure takes 30 to 45 minutes.

Results and scientific evidence

Port-a-cath offers 98-100% technical success rate. Median device lifespan exceeds 12-18 months. Infection rate is 0.5-2 per 1,000 catheter-days, lower than non-implantable catheters. Premature removal rate is 5-15% over total use duration.

Risks and complications

Periprocedural: pneumothorax (< 1% with ultrasound-guided puncture), transient arrhythmia (< 1%), malposition (< 2%). Late: chamber infection (2-5%), venous thrombosis (3-5%), catheter occlusion (5-10%), pinch-off syndrome (rare, related to catheter compression between clavicle and first rib with subclavian approach).

Recovery

The device is usable after healing (5-7 days). No daily maintenance: monthly heparinized saline flush if unused. Normal activities resume the following day (avoid sudden arm movements for 1 week).

Practical information

The procedure is performed as an outpatient or short inpatient stay depending on the case. It is performed by an interventional radiologist or surgeon.