Certified Hemodialysis Technologist/Technician Exam Dialysis Adequacy and Prescription 3

Question 1

What is the recommended minimum treatment time for a thrice-weekly hemodialysis session?

Accepted Answer

3 hours

Answer

KDOQI guidelines recommend a minimum of 3 hours per session for thrice-weekly hemodialysis for most patients.

Question 2

Nocturnal hemodialysis (6–8 hours, 3–6 nights per week) compared to standard hemodialysis offers which primary benefit?

Accepted Answer

Better clearance of middle molecules and improved phosphate control

Answer

Longer nocturnal sessions significantly improve middle molecule clearance and phosphate removal, reducing need for phosphate binders.

Question 3

What is the purpose of sodium modeling during hemodialysis?

Accepted Answer

Use variable dialysate sodium to improve hemodynamic stability and reduce cramps

Answer

Sodium modeling uses a higher dialysate sodium at the start and gradually decreases it, helping stabilize blood pressure and reduce muscle cramps.

Question 4

What does a consistently falling pre-dialysis BUN suggest about a patient's dialysis prescription or status?

Accepted Answer

The patient may have decreased protein intake or increased residual renal function

Answer

Falling pre-dialysis BUN may indicate reduced dietary protein intake (malnutrition) or improved residual renal function, both warranting clinical evaluation.

Question 5

Which method is used to estimate the weekly standard Kt/V (stdKt/V) for comparing different dialysis schedules?

Accepted Answer

Leypoldt/Depner calculation

Answer

The Leypoldt/Depner calculation of standard Kt/V allows comparison of different dialysis schedules (e.g., daily vs. thrice-weekly) by expressing weekly urea clearance in comparable terms.

Certified Hemodialysis Technologist/Technician Exam Practice Test

Certified Hemodialysis Technologist/Technician Exam Practice Test

Certified Hemodialysis Technologist/Technician Exam Dialysis Adequacy and Prescription 3