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

2 hours

Answer

3.5 hours

Answer

4 hours

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

Requires less anticoagulation

Answer

Higher blood flow rates

Answer

Eliminates need for dietary restrictions

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

Reduce dialysis time needed

Answer

Increase urea clearance

Answer

Prevent hypercalcemia

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

The patient is receiving too much dialysis

Answer

The dialyzer is malfunctioning

Answer

The blood pump speed is too high

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

Daugirdas formula

Answer

Gotch formula

Answer

URR percentage

Question 6

Residual kidney function (RKF) in a dialysis patient contributes to overall solute clearance. How is it typically measured?

Accepted Answer

By 24-hour urine collection for urea and creatinine clearance

Answer

By serum creatinine level alone

Answer

By a 2-hour post-dialysis blood draw

Answer

By glomerular filtration rate formula (eGFR)