CHBT Dialysis Equipment Maintenance and Troubleshooting 3

Question 1

What is the purpose of performing a pressure hold test on a dialysis machine?

Accepted Answer

To verify the integrity of the internal fluid pathways and check for leaks

Answer

To test the blood pump occlusion

Answer

To calibrate the ultrafiltration controller

Answer

To verify conductivity sensor accuracy

Question 2

Which dialysis machine component separates the concentrate mixture from the patient's blood circuit?

Accepted Answer

Dialyzer membrane

Answer

Proportioning pump

Answer

Deaeration chamber

Answer

Blood leak detector

Question 3

A technician notices the bicarbonate concentrate port has crystalline buildup. What is the correct corrective action?

Accepted Answer

Clean the port with warm water per manufacturer protocol to remove bicarbonate precipitate

Answer

Replace the entire proportioning system

Answer

Use a stronger acid concentrate to dissolve buildup

Answer

Ignore it if conductivity readings are normal

Question 4

What does volumetric ultrafiltration control offer compared to pressure-based control?

Accepted Answer

More accurate fluid removal by directly measuring volume rather than relying on pressure calculations

Answer

Faster blood flow rates

Answer

Lower cost of machine maintenance

Answer

Simplified alarm management

Question 5

During preventive maintenance, a technician finds the blood pump roller is worn. What is the risk if treatment continues?

Accepted Answer

Inaccurate blood flow delivery and potential hemolysis from excessive tubing compression

Answer

Dialysate temperature fluctuation

Answer

Increased heparin delivery

Answer

Air embolism from venous line

Question 6

What is the role of the deaeration chamber in a hemodialysis machine?

Accepted Answer

Removes dissolved gases from dialysate before it enters the dialyzer

Answer

Filters particulate from the blood

Answer

Measures dialysate conductivity

Answer

Mixes acid and bicarbonate concentrates