It refers to the placement of dialysis catheters in two commonly used central veins: the internal jugular vein (IJV) and the femoral vein, for hemodialysis access. These are typically used in emergency situations, or for short-term dialysis, when a permanent access site (such as an arteriovenous fistula or graft) is not available or functioning.
Positioning: The patient is placed in a supine position with their head turned slightly to the opposite side to expose the neck.
Anesthesia: Local anesthesia (e.g., lidocaine) is applied to numb the area where the catheter will be inserted.
Insertion: A needle is inserted into the internal jugular vein at a 45-degree angle, typically in the lower third of the neck, near the clavicle, to avoid damage to nearby structures.
Guidewire and Dilator: Once the vein is accessed, a guidewire is advanced through the needle. A dilator is then used to enlarge the tract for the catheter.
Catheter Placement: A dialysis catheter (usually a dual-lumen catheter for both inflow and outflow) is then inserted over the guidewire into the vein, and the position is confirmed (using ultrasound or fluoroscopy).
Securing and Dressing: The catheter is secured in place with sutures, and a sterile dressing is applied to minimize infection risk.
Pneumothorax: The internal jugular vein is close to the lung apex, so there’s a risk of puncturing the lung.
Carotid Artery Puncture: The carotid artery is located near the internal jugular vein, so accidental puncture can occur.
Infection: As with any central line, there’s a risk of infection, especially if the catheter is in place for an extended period.
Femoral vein access is typically used when internal jugular access is not feasible or when there’s a need for rapid dialysis access in emergencies.
Positioning: The patient is placed in a supine position with the legs slightly abducted to expose the groin area.
Anesthesia: Local anesthesia is injected to numb the site.
Insertion: A needle is introduced into the femoral vein, which is located in the groin region. The femoral vein is accessed, and a guidewire is inserted.
Guidewire and Dilator: After the guidewire is placed, a dilator is used to create enough space for the catheter.
Catheter Placement: The dialysis catheter is then placed into the femoral vein over the guidewire. The correct positioning is confirmed.
Securing and Dressing: The catheter is secured in place and a sterile dressing is applied.
Infection: The femoral site is at high risk of infection, especially in bedridden patients.
Thrombosis: The femoral vein is smaller and more prone to clot formation, especially if the catheter is in place for a long time.
Discomfort and Mobility Issues: As the femoral vein is in the groin, patients may experience discomfort or difficulty with movement, especially with longer-term placement.
Typically, dual-lumen catheters are used for dialysis, where one lumen is for blood removal and the other for blood return.
Internal jugular catheters are preferred for short to medium-term dialysis, while femoral catheters are often used for emergency dialysis but can be less comfortable for the patient and pose higher infection risks if used long-term.
Continuous monitoring of catheter function (e.g., blood flow, pressure) and patient comfort is necessary to ensure proper dialysis and avoid complications.
Both procedures require skilled operators, such as nephrologists, or intensivists, to minimize complications and ensure proper dialysis access.
Prof (Dr) D Mukherjee is an alumnus of the prestigious Armed Forces Medical College, Pune where he did his MBBS & MD (Medicine). Subsequently he went on to do his DM (Nephrology) from PGIMER Chandigarh, which is the foremost training institution for nephrology in India.