PDkateter

PDkateter, or peritoneal dialysis catheter, is a surgically implanted conduit that provides access to the peritoneal cavity for the exchange of dialysis fluid in peritoneal dialysis. It enables continuous or intermittent infusion and drainage of dialysate, allowing patients to perform dialysis at home or in other non-hospital settings. The most common type is the Tenckhoff catheter, designed with a flexible silicone or polyurethane tube, a curled or straight intraperitoneal tip, and a subcutaneous tunnel with one or two Dacron cuffs to reduce infection risk and stabilize the catheter.

Design features include an external, skin-facing segment for the exit site and a subcutaneous tunnel that helps secure the device and limit track infections. Placement is performed under sterile conditions, usually by a surgeon, using open, laparoscopic, or sometimes percutaneous techniques. The procedure aims to position the intraperitoneal end of the catheter away from the incision and organs to improve dialysate flow and reduce complications.

PDkateter is used to conduct both continuous ambulatory peritoneal dialysis (CAPD) and automated PD (APD). After a healing period, the patient connects to a drainage and refill cycle, with daily or nightly exchanges. Proper exit-site care and sterile technique are essential to minimize infections, and training is required for self-care or caregiver-assisted dialysis.

Complications can include peritonitis, exit-site or tunnel infections, dialysate leaks, catheter obstruction or migration, and hernia. Regular follow-up, prompt treatment of infections with appropriate antibiotics, and timely catheter assessment or reinsertion when needed are important for maintaining catheter function and treatment efficacy.

The lifespan of a PDkateter varies but is often years, depending on infection control, mechanical function, and clinical needs.