CHT Certified Hemodialysis Technician 3

Question 1

During hemodialysis, the venous pressure alarm goes high and the blood pump stops. The first action the technician should take is:

Accepted Answer

Clamp the venous line and check for kinks or occlusion

Answer

A high venous pressure alarm indicates downstream resistance; clamping and inspecting the venous line for kinks or clotted segments is the correct initial response.

Question 2

The process of ultrafiltration during hemodialysis is driven primarily by:

Accepted Answer

Hydrostatic transmembrane pressure

Answer

Ultrafiltration (fluid removal) is driven by transmembrane pressure, the hydrostatic pressure difference between the blood and dialysate compartments across the membrane.

Question 3

A technician notices the dialysate conductivity reading is consistently 12.5 mS/cm instead of the target of 14.0 mS/cm. The most likely cause is:

Accepted Answer

Bicarbonate concentrate is depleted or supply line is kinked

Answer

Low conductivity typically results from insufficient concentrate delivery; a depleted or blocked bicarbonate supply line reduces the total ionic content of the dialysate.

Question 4

Heparin is administered during hemodialysis primarily to prevent:

Accepted Answer

Clotting of blood in the extracorporeal circuit

Answer

Heparin anticoagulates the blood as it passes through the extracorporeal circuit to prevent clot formation in the dialyzer fibers and blood tubing.

Question 5

Which of the following is the correct procedure when an air detector alarm sounds during hemodialysis?

Accepted Answer

Clamp the venous line immediately and stop the blood pump

Answer

When an air detector alarm triggers, the venous line must be clamped immediately and the blood pump stopped to prevent air embolism from reaching the patient.

Certified Hemodialysis Technologist/Technician Exam Practice Test

Certified Hemodialysis Technologist/Technician Exam Practice Test

CHT Certified Hemodialysis Technician 3