Types of Dialysis Catheter: A Practical Guide to Haemodialysis and Peritoneal Access

For people living with kidney failure, access to dialysis is essential. The route chosen—whether Haemodialysis Catheter or Peritoneal Dialysis Catheter—depends on medical needs, anticipated duration of treatment, and individual circumstances. This guide provides a thorough overview of the Types of Dialysis Catheter, explains how each option works, and offers practical advice on care, risks, and decision-making.

What are the Types of Dialysis Catheter?

Broadly speaking, dialysis catheters fall into two main families: Haemodialysis Catheters and Peritoneal Dialysis Catheters. Within these groups you’ll find a range of designs aimed at balancing ease of use, infection risk, and durability. The phrase types of dialysis catheter is commonly used by clinicians and patients alike to describe these variations, from temporary, non-tunneled catheters to long-term, tunneled devices. Understanding the differences helps patients and carers make informed choices about access for dialysis.

Haemodialysis Catheters

Haemodialysis requires reliable venous access to remove blood, run it through a dialysis machine, and return it to the body. Haemodialysis Catheter types are primarily categorized by how long they are intended to stay in place and how they are positioned under the skin.

Short-Term Non-Tunneled Catheters

These catheters are designed for immediate use, often at the point of need in hospital settings. They are inserted directly through the skin into a central vein (usually the internal jugular or femoral vein) and do not have a subcutaneous tunnel. Short-term non-tunneled catheters are typically used for days to a few weeks while a more permanent access solution is planned. They are convenient for urgent dialysis, but their infection risk is higher than longer-term options, and they are not ideal for prolonged dialysis.

Tunneled Dialysis Catheters

For longer-term dialysis, Tunneled Dialysis Catheters represent a preferred solution. These devices are sewn under the skin with a subcutaneous tunnel and feature a Dacron or similar cuff that helps stabilise the catheter and reduces infection risk by acting as a barrier to bacteria migrating from the skin. Tunneled catheters are commonly used when a fistula or graft has not yet matured or when dialysis is expected to continue for an extended period. They are designed to remain in place for weeks to months, and sometimes years, depending on individual circumstances.

Where they sit and how they work

Most Haemodialysis Catheters used for long-term access have two lumens (double-lumen): one lumen draws blood from the patient to the dialysis machine (arterial or access lumen), and the other returns the cleaned blood (venous lumen). Some specialised catheters exist with three lumens, but these are less common for standard haemodialysis and are typically used in intensive care settings for other therapies. The exact design (two lumens vs three, its materials) influences flow rates, durability, and infection risk.

Materials and Design

Common materials include polyurethane and silicone. Polyurethane catheters tend to be stiffer and may offer higher flow rates, whereas silicone catheters are more flexible and may be gentler on the vessel wall. The choice of material can affect patient comfort, kink resistance, and infection risk. Tunneled catheters often include an antimicrobial barrier or coating to help reduce surface bacteria at the exit site, though this does not replace meticulous care and sterile procedures.

Site Choices: IJV vs Subclavian vs Femoral

For Haemodialysis Catheter placement, the right internal jugular vein (right IJV) is generally preferred due to safer anatomy and lower complication rates. The left side is more technically challenging and carries a higher risk of stenosis, which can complicate future access. The femoral route is sometimes used when other sites are unsuitable or during certain clinical circumstances, but it carries a higher risk of infection when the patient is mobile or when care is difficult to maintain. Site selection is a shared decision between patient and dialysis team, with a consideration of longer-term access plans and infection risk.

Infection Prevention and Care

Infection remains the most significant risk with Haemodialysis Catheters. Meticulous care, proper dressing changes, and adherence to sterile technique during catheter use are essential. Some patients may require antibiotic-impregnated catheters, or antiseptic-impregnated dressings in high-risk situations, but these interventions do not replace vigilant ongoing care and education on exit-site care, hand hygiene, and prompt reporting of symptoms such as redness, swelling, or fever.

Pros and Cons of Haemodialysis Catheters

• Pros: Quick to deploy, suitable for urgent dialysis, can serve as a bridge to a more permanent access (such as an AV fistula or AV graft), available in various sizes and configurations.
• Cons: Higher infection risk compared with other access types, potential for stenosis with long-term use, patient discomfort and lifestyle limitations due to site management.

Peritoneal Dialysis Catheters

Peritoneal dialysis (PD) uses a catheter placed into the abdomen to exchange waste products through the peritoneal membrane. Peritoneal Dialysis Catheters are quite distinct from Haemodialysis Catheters and offer an alternative method of dialysis that many patients prefer for lifestyle reasons.

Tenckhoff Catheters

The most common Peritoneal Dialysis Catheter is the Tenckhoff catheter. It is designed with two cuffs and two lumens to access the peritoneal cavity while minimising infection risk along the exit tract. The catheter consists of a subcutaneous segment that runs from the abdomen into the peritoneal cavity, with one limb used for filling dialysate and the other for draining used fluid. Tenckhoff catheters can be placed laparoscopically or via open surgical techniques, and they may be placed in a straight or curled configuration depending on patient anatomy and surgeon preference.

Placement, Maturation, and Use

PD catheter placement is a surgical procedure performed by a surgeon or interventional radiologist. After placement, the catheter requires a healing period before it can be used for dialysis. Peritoneal dialysis typically involves daily exchanges of dialysate, which are performed at home by the patient or a carer. With effective training, many patients manage APD (automated peritoneal dialysis) during the night, leaving days free for other activities. The Tenckhoff catheter is designed to stay in place for several years, subject to the patient’s health and the presence of any complications.

Materials and Design

PD catheters are commonly made from silicone or polyurethane. The silicone variants tend to be softer and more tissue-friendly, while polyurethane versions may offer greater durability in the peritoneal environment. The cuffs help anchor the catheter in place and reduce the risk of infection along the exit site by creating a physical barrier to bacterial migration.

Infection Prevention and Care

Care for a PD catheter focuses on exit-site hygiene, handwashing before handling the catheter, and prompt attention to any signs of infection at the exit site or tunnel. Routine care includes cleaning the exit site with sterile solutions and following the PD programme exactly, including sterile technique during exchanges. Early recognition of infection and mechanics of a malfunctioning catheter is essential for maintaining the longevity of peritoneal dialysis access.

Choosing the Right Dialysis Catheter

Deciding on the right Types of Dialysis Catheter involves a personalised discussion with the nephrology team. Key factors include the expected duration of dialysis, the patient’s anatomy, prior access history, risk of infection, lifestyle considerations, and the plan for longer-term access such as an AV fistula or AV graft. For urgent starts, a non-tunneled catheter may be chosen, with a transition plan to a more durable access. For patients who wish to dialyse at home or outside hospital settings, a PD catheter or a well-planned tunnelled HD catheter can be more suitable options.

Factors that influence catheter choice

• Expected duration of dialysis: short-term versus long-term access needs.
• Vessel anatomy and risk of stenosis or thrombosis.
• Infection history and skin health at potential exit sites.
• Lifestyle preferences and mobility: some patients prefer home dialysis options.
• Potential future plans for AV fistula or AV graft maturation.

Care, Maintenance and Living with a Dialysis Catheter

Maintenance is crucial to prolong catheter life and reduce complications. Education for patients and carers on daily care, signs of infection, and when to seek medical advice is a cornerstone of successful dialysis management.

Daily Care Tips

• Keep exit sites clean and dry; follow the clinic’s instructions for dressing changes.
• Avoid submerging catheters in water unless approved by your healthcare team; use waterproof coverings when showering.
• Handle cuffs and exit sites gently; avoid tugging or pulling on the catheter.
• Report any redness, warmth, swelling, fever, or discharge immediately.

Infection Prevention

Infection prevention is a shared responsibility. Basic hygiene, proper handwashing before handling the catheter, and adherence to sterile techniques during any access or exchange procedures are essential. Some clinics may use antiseptic dressings or antibiotic coatings as part of a broader strategy to lower infection risks, but these measures do not replace personal vigilance and prompt medical care if problems arise.

Catheter Removal and Replacement

Catheters are removed when a durable option is available or when complications persist. Replacement is considered if the catheter malfunctions frequently, the patient develops recurrent infections, or better long-term access is established. The decision to remove or replace a catheter is taken by the renal team in collaboration with the patient and family, considering the overall treatment plan and the patient’s preferences.

Complications and Risks

All catheters carry potential risks. A clear understanding of these risks helps patients recognise early warning signs and communicates effectively with healthcare teams.

Infection and Sepsis

Exit-site infection, tunnel infection, and bloodstream infections are among the most serious risks associated with dialysis catheters. Prompt treatment with antibiotics and, in many cases, catheter removal or exchange is required to prevent serious complications such as sepsis. Preventive strategies focus on hygiene, careful site care, and, where appropriate, antimicrobial strategies integrated into the catheter care plan.

Thrombosis and Stenosis

Clot formation within the catheter or vein stenosis at the access site can impair blood flow, leading to inadequate dialysis. Maintaining patency and using heparin locks or other anticoagulation strategies as directed by the dialysis team can help mitigate these issues. Thrombosis risk factors include prolonged catheter use and certain underlying conditions.

Mechanical Problems

Catheter dysfunction caused by kinking, malposition, or mechanical obstruction is a common reason for reduced dialysis efficiency. Regular monitoring, imaging if necessary, and timely interventions by the vascular access team are essential to restore function.

Alternatives to Catheters for Dialysis

Where feasible, other forms of vascular access may be preferred. An arteriovenous fistula (AVF) is usually the optimal long-term access for haemodialysis due to lower infection rates and longer patency. An arteriovenous graft (AVG) offers another durable option when natural vessels are unsuitable for fistula creation. For many patients, Peritoneal Dialysis Catheters provide a home-based dialysis alternative that aligns with lifestyle preferences and medical suitability. Discussing these alternatives early in the care pathway helps create a robust, patient-centred plan.

Frequently Asked Questions

• What is the difference between non-tunneled and tunneled dialysis catheters? Non-tunneled catheters are placed directly into a central vein and are intended for short-term use, while tunneled catheters are placed under the skin with a subcutaneous tunnel and are designed for longer-term use, with lower infection risk.
• Are there risks associated with PD catheters? Yes. Common concerns include exit-site infection, peritonitis, and catheter malfunction, though many people manage these effectively with training and prompt medical care.
• Can I swim with my dialysis catheter? This depends on the type of catheter and your clinician’s advice. Many people are advised to avoid submersion in lakes, rivers, or public pools; you should follow your healthcare team’s guidance.
• How long does a dialysis catheter last? It varies widely. Short-term non-tunneled catheters are used for days to weeks; tunneled catheters may last months to years depending on care, infection risk, and patient factors.

Final Thoughts on Types of Dialysis Catheter

The Types of Dialysis Catheter available reflect the diversity of needs among people requiring dialysis. From rapid, short-term lines to durable, tunneled devices, and from haemodialysis access points to peritoneal dialysis catheters, there is a spectrum of options. The choice hinges on a shared decision-making process between patient and renal team, weighing how long dialysis is anticipated, the risks of infection, the patient’s lifestyle, and the plan for future permanent access. With thoughtful selection, careful care, and proactive management, the right catheter strategy supports successful dialysis and a better quality of life for many patients.