Hemodialysis Access
Hemodialysis Access - Related Videos
08:39
A Murine Model of Hemodialysis Access-Related Hand Dysfunction
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Cited by 3 •
2022
This protocol details the surgical steps of murine common iliac arteriovenous fistula creation. We developed this model to study hemodialysis access-related limb pathophysiology.
01:25
Hemodialysis I: Introduction
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2025
Hemodialysis (HD) is a medical treatment that artificially removes waste products, excess fluids, and toxins from the blood when the kidneys are no longer able to perform these functions effectively. In this process, blood is filtered through a semipermeable membrane, allowing for the selective removal of waste while preserving necessary components like blood cells and proteins. Hemodialysis is typically performed in patients with end-stage renal disease (ESRD) or severe kidney...
01:24
Hemodialysis II: Procedure and Complications
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2025
DialyzersA hemodialysis (HD) dialyzer is a plastic cartridge containing thousands of parallel hollow fibers, which serve as semipermeable membranes. These fibers are typically made from cellulose-based or other synthetic materials. During HD, blood is pumped into the top of the cartridge and distributed among these fibers. Simultaneously, dialysis fluid, known as dialysate, is introduced into the bottom of the cartridge, bathing the outside of the fibers. Across the semipermeable membrane,...
01:25
Hemodialysis III: Nursing Management
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2025
The nursing management of a patient undergoing hemodialysis includes several critical steps, starting with a thorough assessment before the procedure.Before the Hemodialysis ProcedureFirst, record the patient's vital signs—blood pressure, heart rate, respiratory rate, and temperature—to establish a baseline. This baseline is essential for detecting conditions such as hypotension that could impact the patient's response to dialysis. Document the patient's pre-dialysis weight, as this measurement...
14:37
Accessibility to Clinical Care for People who use Wheelchairs
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2023
Source: Yetsa Tuakli-Wosornu1,2, Jaideep Talwalkar1; 1Yale School of Medicine, 2University of Pittsburgh In the United States, 25% of the general population suffers from one or another type of disability. Ambulatory disabilities, or mobility impairments, represent the most common subcategory, comprising 14% of the country's populace. Different mobility-assistive devices, ranging from canes to scooters, enable increased independence and improved quality of life for those suffering from mobility...
FAQs
A fistula joins an artery to a vein, exposing the vein to arterial blood flow. Over time, this causes the vein to enlarge and strengthen, making it more suitable for repeated needle placement. That structural change supports dependable access for treatments that require the dialysis machine to circulate blood through its pump and filter.
These options differ in how they connect the circulation to dialysis. A fistula uses the patient’s artery and vein, whereas a graft provides an alternative connection when a fistula is unsuitable or unavailable. A central venous catheter offers another route in those circumstances. The choice therefore depends partly on whether a fistula can be used effectively.
The access must support sufficient, repeated blood flow for the dialysis machine’s pump and filter. If flow is inadequate, blood may not circulate effectively through the treatment system, reducing the ability to remove toxins and excess fluid. Access performance therefore directly affects whether dialysis can achieve its intended treatment quality.
Infection, clotting, and narrowing can interfere with the reliability or flow of an access route. These complications may limit circulation through the dialysis system and reduce toxin or fluid removal. Because the access is needed repeatedly, such problems require prompt clinical management to help preserve treatment quality and maintain a usable route for subsequent sessions.
A graft or central venous catheter may be used when an arteriovenous fistula is unsuitable or unavailable. These alternatives provide ways to establish dialysis access when the preferred fistula option cannot serve the patient’s needs. Their use reflects the need to maintain a dependable route for treatment rather than relying on a single access type in every case.
During treatment, access allows blood to travel out of the body to the dialysis machine and then return safely. The route must accommodate the machine’s pump and filter while supporting repeated blood circulation. When access remains reliable, the system can perform the intended removal of toxins and fluid for a patient with kidney failure.