Certified Hemodialysis Technologist/Technician Exam Water Treatment and Quality

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 test is used to detect chloramine in dialysis water?

Accepted Answer

OT test

Answer

The OT (orthotolidine) test is used specifically to detect chloramine, while the DPD test detects free chlorine.

Question 3

How often should product water be tested for bacteria in a dialysis facility?

Accepted Answer

Monthly

Answer

AAMI guidelines require dialysis product water to be tested for bacteria at least monthly.

Question 4

What is the maximum allowable endotoxin level in standard dialysis water?

Accepted Answer

1.0 EU/mL

Answer

AAMI standards set the maximum endotoxin level for standard dialysis water at 1.0 EU/mL.

Question 5

Which component of a water treatment system is responsible for removing bacteria and endotoxins through size exclusion?

Accepted Answer

Reverse osmosis membrane

Answer

The reverse osmosis membrane removes bacteria, endotoxins, and most dissolved solids through semipermeable filtration.

Certified Hemodialysis Technologist/Technician Exam Practice Test