Certified Hemodialysis Technologist/Technician Exam Dialysis Equipment and Troubleshooting 3

Question 1

Which conductivity value would most likely trigger the dialysate bypass alarm?

Accepted Answer

10.0 mS/cm

Answer

14.0 mS/cm

Answer

15.0 mS/cm

Answer

13.5 mS/cm

Question 2

What is the recommended dialysate temperature range for standard hemodialysis?

Accepted Answer

36–38°C

Answer

34–35°C

Answer

39–41°C

Answer

42–44°C

Question 3

Which action should be performed before reprocessing a dialyzer for reuse?

Accepted Answer

Test the fiber bundle volume

Answer

Prime with heparinized saline

Answer

Check TMP at full blood flow

Answer

Perform a recirculation study

Question 4

During priming of the extracorporeal circuit, approximately how much saline is typically used?

Accepted Answer

300–500 mL

Answer

100–200 mL

Answer

700–1000 mL

Answer

1500–2000 mL

Question 5

What is the most common cause of clotting in the extracorporeal circuit during hemodialysis?

Accepted Answer

Insufficient anticoagulation

Answer

High blood flow rate

Answer

Excessive ultrafiltration

Answer

Low dialysate temperature

Question 6

When setting up a hemodialysis machine, what does the technician verify by performing a 'pressure hold test'?

Accepted Answer

Integrity of the blood circuit for leaks

Answer

Blood pump accuracy

Answer

Dialysate flow rate calibration

Answer

Ultrafiltration controller accuracy