Certified Hemodialysis Technologist/Technician Exam Dialysis Water Treatment and Quality 3

Question 1

When testing dialysis water conductivity, a sudden drop in conductivity of the RO product water suggests:

Accepted Answer

Possible membrane breakthrough

Answer

Excellent membrane performance

Answer

Softener regeneration needed

Answer

Carbon bed exhaustion

Question 2

Which AAMI document provides the most current standards for water quality in hemodialysis?

Accepted Answer

AAMI RD62

Answer

AAMI RD52

Answer

AAMI TIR34

Answer

AAMI ST79

Question 3

What does a hardness breakthrough in the water softener indicate?

Accepted Answer

The softener resin is exhausted and needs regeneration

Answer

The carbon tanks are exhausted

Answer

RO membrane failure

Answer

Bacterial contamination

Question 4

Dialysis concentrate mixing ratios typically use which proportion of concentrate to water?

Accepted Answer

1:34 for bicarbonate, 1:44 for acid

Answer

1:10

Answer

1:100

Answer

1:20

Question 5

Nitrate contamination in dialysis water is particularly dangerous because it causes:

Accepted Answer

Methemoglobinemia

Answer

Hemolytic anemia

Answer

Hyperkalemia

Answer

Hypercalcemia

Question 6

How frequently should microbiological testing of dialysis water be performed at minimum according to best practice guidelines?

Accepted Answer

Monthly

Answer

Daily

Answer

Weekly

Answer

Quarterly