CDN Water Treatment and Dialysis Equipment

Question 1

What is the primary purpose of reverse osmosis (RO) in the dialysis water treatment system?

Accepted Answer

Remove dissolved ionic contaminants including heavy metals

Answer

Remove chlorine and chloramines

Answer

Remove bacteria and endotoxins

Answer

Soften hard water by removing calcium

Question 2

Which chemical contaminant in municipal water poses the greatest risk of hemolytic anemia in dialysis patients if not removed?

Accepted Answer

Chloramine

Answer

Calcium

Answer

Fluoride

Answer

Nitrate

Question 3

What is the AAMI recommended maximum level for bacteria in dialysis water?

Accepted Answer

100 CFU/mL

Answer

10 CFU/mL

Answer

200 CFU/mL

Answer

500 CFU/mL

Question 4

What happens to the water softener resin during the regeneration process?

Accepted Answer

Sodium ions replace accumulated calcium and magnesium ions via a salt brine flush

Answer

Resin is replaced with new material

Answer

Resin is sterilized with bleach

Answer

Carbon particles are backwashed out of the system

Question 5

How often should the total chlorine level in dialysis water be tested at minimum?

Accepted Answer

Daily before each patient treatment

Answer

Weekly

Answer

Monthly

Answer

Quarterly

Question 6

What is the maximum allowable endotoxin level in standard hemodialysis water per AAMI standards?

Accepted Answer

0.25 EU/mL

Answer

0.03 EU/mL

Answer

2 EU/mL

Answer

5 EU/mL