Residency · Residency · Interventional Radiology
Peritoneal Dialysis Catheter Placement
Introduction
Peritoneal dialysis (PD) is an effective renal replacement therapy that offers patients the advantage of home-based treatment, preserved residual renal function, and improved quality of life. The PD catheter is the lifeline of this modality, and its proper placement is critical for long-term function. Interventional radiologists increasingly perform image-guided percutaneous PD catheter placement, offering a minimally invasive alternative to surgical techniques.
Types of PD Catheters
| Catheter Type | Tip Design | Cuffs | Key Feature |
|---|---|---|---|
| Tenckhoff (straight) | Straight | Single or double | Most widely used; simple design |
| Tenckhoff (coiled) | Pigtail/coiled | Single or double | Reduced migration and omental wrapping |
| Swan neck | Straight or coiled | Double | Permanent bend directs exit site downward; lower infection rate |
Tenckhoff catheter: the most widely used; straight or coiled tip; single or double Dacron cuff. Swan neck catheter: permanent bend between cuffs directs the exit site downward, reducing exit-site infections. Coiled tip (pigtail): may reduce catheter migration and omental wrapping compared to straight tip. Double-cuff catheters are preferred: one cuff in the rectus muscle, one in the subcutaneous tunnel; reduce bacterial tracking and infection risk. Catheter material is typically silicone (biocompatible, flexible).
Patient Selection and Preprocedural Planning
Indications: patients choosing PD as their dialysis modality; peritoneal equilibration testing guides modality choice. Contraindications: active peritonitis, uncorrectable abdominal wall hernias, extensive abdominal adhesions (relative), morbid obesity (relative), pleuroperitoneal communication. Preprocedural assessment: history of abdominal surgery, hernias, ostomies; BMI; manual dexterity and home support. Exit site marking: position the catheter exit site laterally, away from the belt line, skin folds, and scars; mark with the patient seated and standing. Bowel preparation: clear liquid diet the day before; consider laxative to reduce bowel distension. Ensure the bladder is empty (Foley catheter or void immediately before the procedure).
Percutaneous Placement Technique (Fluoroscopy-Guided)
Access and Tunnel Creation
Position the patient supine; prep and drape the abdomen. Administer moderate sedation and local anesthesia. Make a small incision lateral to the midline, typically at the level of the umbilicus. Under fluoroscopic guidance, insert a micropuncture needle into the peritoneal cavity using Seldinger technique. Confirm intraperitoneal position by injecting contrast or saline and observing free flow around bowel loops. Advance a guidewire into the pelvis under fluoroscopy.
Catheter Insertion
Dilate the tract through the rectus muscle and peritoneum using serial dilators or a peel-away sheath. Advance the PD catheter over the guidewire or through the sheath, positioning the tip in the deep pelvis (Douglas pouch). Confirm correct position with fluoroscopy: tip pointing caudally, coils in the pelvis. Create a subcutaneous tunnel from the peritoneal entry site to the planned exit site using a tunneling tool. Position the deep cuff within the rectus muscle and the superficial cuff 2-3 cm from the exit site.
Completion
Test catheter function by instilling and draining 500-1000 mL of saline (or dialysate). Secure the catheter and apply sterile dressing. The catheter is ideally allowed a 2-week break-in period before full-volume exchanges to allow cuff ingrowth.
Ultrasound-Guided and Laparoscopic Alternatives
Ultrasound-guided: real-time visualization of the anterior abdominal wall and peritoneal entry; avoids radiation. Laparoscopic placement: allows direct visualization, adhesiolysis, and simultaneous hernia repair; gold standard in patients with prior abdominal surgery. Surgical (open) placement: the traditional technique; remains common but associated with longer recovery. Choice of technique depends on patient anatomy, surgical history, and institutional expertise.
Complications
Early Complications (Within 30 Days)
Catheter malposition/migration: tip migrates out of pelvis; manage with fluoroscopic manipulation, guidewire repositioning, or laparoscopic revision. Leakage: peritoneal fluid leak at the exit site or into the subcutaneous tunnel; managed by low-volume supine exchanges; may require surgical revision. Bleeding: intraperitoneal or abdominal wall hematoma; usually self-limited. Bowel perforation: rare (< 1%); present with feculent drainage; requires surgical consultation.
Late Complications
Exit-site and tunnel infection: erythema, discharge, pain; treat with antibiotics guided by culture; Staphylococcus aureus is most common. Peritonitis: cloudy effluent, abdominal pain, fever; effluent WBC > 100/mcL with > 50% neutrophils; treat with intraperitoneal antibiotics. Omental wrapping: omentum encases the catheter tip causing outflow failure; may require laparoscopic omentectomy. Hernia development: from increased intra-abdominal pressure; inguinal and umbilical most common.
Outcomes
Percutaneous placement success rates: 90-97%. Comparable outcomes to surgical placement for primary function and complication rates. Catheter survival at 1 year: 80-90% with appropriate management. Advantages of percutaneous approach: shorter procedure time, local/moderate sedation, same-day discharge. Earlier referral for catheter placement (ideally 4-6 weeks before PD initiation) allows adequate break-in time.
Key Clinical Pearls
Image-guided percutaneous PD catheter placement is safe, effective, and comparable to surgical techniques. The catheter tip must rest in the deep pelvis for optimal drainage; migration is the most common mechanical complication. Exit site selection is critical: lateral, below the belt line, away from skin folds and scars. A 2-week break-in period reduces leak rates and allows tissue ingrowth around the cuffs. Early referral (4-6 weeks before PD start) ensures adequate catheter maturation and patient training.
References
- Defined the Core Competencies. Voss D, Hawkins S, Poole G, et al. Radiological versus Surgical Implantation of First Catheter for Peritoneal Dialysis: A Randomized Non-inferiority Trial. Nephrology Dialysis Transplantation. 2012;27(11):4196-4204.
- Defined Guidelines. Crabtree JH, Shrestha BM, Chow KM, et al. Creating and Maintaining Optimal Peritoneal Dialysis Access in the Adult Patient: 2019 Update. Peritoneal Dialysis International. 2019;39(5):414-436.
- Defined the Core Competencies. Defined the Core Clinical Practice. Defined the Core Updates. Defined the Practice Guideline. Defined the Clinical Standards. ISPD Peritonitis Guidelines. 2022.
- Defined the Core Competencies. Defined the Core Outcomes. Defined the Core Standards. Defined the Practice Guideline. KDOQI Clinical Practice Guideline for Peritoneal Dialysis Adequacy. 2006.