Certified Hemodialysis Technologist/Technician Exam Dialysis Adequacy and Prescription 2

Question 1

What is a patient's 'dry weight' in the context of hemodialysis?

Accepted Answer

The lowest weight a patient can tolerate without experiencing hypotension or cramps

Answer

Weight measured after the patient is completely dehydrated

Answer

Weight of the patient without any clothing

Answer

Weight used to calculate Kt/V

Question 2

The maximum recommended ultrafiltration rate to minimize intradialytic hypotension and cardiovascular stress is:

Accepted Answer

13 mL/kg/hour

Answer

5 mL/kg/hour

Answer

10 mL/kg/hour

Answer

20 mL/kg/hour

Question 3

Which parameter reflects the ability of a dialyzer to clear small molecules like urea through diffusion?

Accepted Answer

KoA (mass transfer area coefficient)

Answer

KUF (ultrafiltration coefficient)

Answer

Membrane thickness

Answer

Fiber bundle volume

Question 4

A dialysis patient has a pre-BUN of 80 mg/dL and a post-BUN of 20 mg/dL. What is the URR?

Accepted Answer

75%

Answer

25%

Answer

40%

Answer

80%

Question 5

Which factor decreases dialysis adequacy (Kt/V) if all other parameters remain constant?

Accepted Answer

Increased access recirculation

Answer

Increasing blood flow rate

Answer

Increasing dialysate flow rate

Answer

Using a higher KoA dialyzer

Question 6

For a patient with a large body size (high V), which adjustment would best maintain adequate Kt/V?

Accepted Answer

Increase treatment time or use a higher efficiency dialyzer

Answer

Decrease dialysate flow rate

Answer

Use a smaller surface area dialyzer

Answer

Reduce blood flow rate