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Questions and Answers
How is blood filtered in hemodialysis?
How is blood filtered in hemodialysis?
- Inside the body through natural kidney function
- By taking oral medications
- In a machine outside the body (correct)
- Through direct injection into the bloodstream
What is the purpose of creating a vascular access in hemodialysis?
What is the purpose of creating a vascular access in hemodialysis?
- To administer medications
- To remove wastes from blood
- To prevent blood infection
- To allow blood to flow through tiny tubes in a machine (correct)
Why does hemodialysis use semipermeable membranes in the machine?
Why does hemodialysis use semipermeable membranes in the machine?
- To remove large molecules from the blood
- To allow oxygen to enter the bloodstream
- To speed up the blood filtration process
- To enable small molecules to pass through (correct)
How often is hemodialysis typically performed in a dialysis center?
How often is hemodialysis typically performed in a dialysis center?
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Which of the following is a potential complication of hemodialysis?
Which of the following is a potential complication of hemodialysis?
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Study Notes
- Dialysis is a therapy used to remove wastes from the blood of patients with kidney failure.
- There are two main types of dialysis: hemodialysis and peritoneal dialysis.
- In hemodialysis, blood is filtered outside the body in a machine, using a vascular access created through a minor surgery.
- The blood flows through tiny tubes surrounded by dialysate in the machine, allowing small molecules to pass through semipermeable membranes via osmosis and diffusion.
- Hemodialysis is typically performed as 4-hour treatments, 3 times a week in a dialysis center, with risks of complications such as blood infection and internal bleeding.
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