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Dialysis Process Overview

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Questions and Answers

What is the function of the dialyzer in hemodialysis?

Generate dialysate

Maintain ideal electrolyte concentrations

Remove excess fluid using ultrafiltration

Circulate blood through a synthetic semipermeable membrane (correct)

In hemodialysis, how are toxins and wastes primarily removed from the blood?

Dialysate circulation

Osmosis

Diffusion (correct)

Ultrafiltration

What is the purpose of osmosis in hemodialysis?

To remove uremic toxins and wastes

To circulate the dialysate

To move fluid under high pressure

To remove excess fluid from the blood (correct)

What is the preferred method of permanent vascular access for dialysis?

Creating an arteriovenous fistula surgically Signup and view all the answers

Why is heparin given during dialysis?

To keep blood from clotting in the dialysis circuit Signup and view all the answers

Which vein is rarely used for vascular access in hemodialysis due to an increased risk of central stenosis?

Subclavian vein Signup and view all the answers

How is immediate access for acute hemodialysis typically achieved?

By inserting a double-lumen catheter into the subclavian vein Signup and view all the answers

What are some risks associated with the method of vascular access involving catheters?

Hematoma, pneumothorax, infection, vein thrombosis Signup and view all the answers

In PD, which membrane serves as the semipermeable membrane for the clearance of uremic toxins?

Peritoneal membrane Signup and view all the answers

What does the movement of solute from the blood into the dialysate fluid through the peritoneal membrane in peritoneal dialysis represent?

Diffusion Signup and view all the answers

What is the primary function of the cuffs made of Dacron polyester in most adult catheters used in dialysis?

Limit the movement of the catheter Signup and view all the answers

What type of medications are typically not well dialyzed out during hemodialysis?

Fat soluble medications Signup and view all the answers