Certified Hemodialysis Technologist/Technician Exam Dialysis Water Treatment and Quality 1

Question 1

What is the maximum allowable level of chloramine in dialysis water according to AAMI standards?

Accepted Answer

0.1 mg/L

Answer

AAMI standards require chloramine levels in dialysis water to be below 0.1 mg/L to prevent hemolytic anemia.

Question 2

Which water treatment component is primarily responsible for removing chlorine and chloramines from dialysis water?

Accepted Answer

Activated carbon tank

Answer

Activated carbon tanks adsorb chlorine and chloramines from the water supply before it reaches the reverse osmosis unit.

Question 3

How often should total chlorine be tested in the water treatment system during a dialysis treatment day?

Accepted Answer

At the beginning of each treatment day

Answer

Total chlorine must be tested at the beginning of each treatment day to ensure patient safety before dialysis begins.

Question 4

What is the purpose of the softener in a dialysis water treatment system?

Accepted Answer

Removes calcium and magnesium ions

Answer

The water softener uses ion exchange to remove calcium and magnesium ions that would otherwise foul the reverse osmosis membrane.

Question 5

Which of the following contaminants in dialysis water can cause aluminum toxicity in patients?

Accepted Answer

Aluminum

Answer

Aluminum in dialysis water can accumulate in patients causing dialysis encephalopathy, osteomalacia, and anemia.

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