CDN Water Treatment and Dialysis Equipment 2

Question 1

What is the purpose of carbon tanks in the dialysis water treatment system?

Accepted Answer

Remove chlorine and chloramines via adsorption

Answer

Activated carbon tanks remove chlorine and chloramines through adsorption, protecting the RO membrane and preventing patient exposure to these hemolytic agents.

Question 2

During a dialysis machine's self-test, a conductivity alarm activates indicating high conductivity. What does this most likely indicate?

Accepted Answer

Incorrect proportioning of dialysate concentrate

Answer

High conductivity in the dialysate circuit indicates improper proportioning of the acid or bicarbonate concentrate, resulting in a solution that is too concentrated.

Question 3

What action should be taken if the dialysis machine's venous pressure alarm activates with a sudden increase in venous pressure?

Accepted Answer

Check for venous needle kinking, clotting, or access obstruction

Answer

A sudden increase in venous pressure suggests obstruction in the venous return pathway — check for needle kinking, clotting in the venous chamber, or access stenosis.

Question 4

What does the dialysis machine's blood leak detector monitor?

Accepted Answer

Presence of blood in the spent dialysate

Answer

The blood leak detector uses a photocell to detect blood in the spent dialysate effluent, signaling a breach in the dialyzer membrane.

Question 5

What is the correct response when the air detector alarm activates during hemodialysis?

Accepted Answer

Immediately clamp the venous line and stop the blood pump

Answer

An air detector alarm requires immediate clamping of the venous blood line and stopping the blood pump to prevent air embolism, which can be fatal.

CDN - Certified Dialysis Nurse Practice Test

CDN - Certified Dialysis Nurse Practice Test

CDN Water Treatment and Dialysis Equipment 2