CHT Hemodialysis Technologist 2

Question 1

Which type of vascular access is considered the 'gold standard' for hemodialysis?

Accepted Answer

Arteriovenous fistula

Answer

An arteriovenous (AV) fistula is the preferred access because it has lower infection rates and longer patency than grafts or catheters.

Question 2

A patient's pre-dialysis BUN is 80 mg/dL and post-dialysis BUN is 20 mg/dL. What is the URR?

Accepted Answer

75%

Answer

URR = (pre-BUN − post-BUN) / pre-BUN × 100 = (80 − 20) / 80 × 100 = 75%.

Question 3

When priming a dialyzer with normal saline, what is the primary purpose?

Accepted Answer

Remove air and reprocessing chemicals from the circuit

Answer

Priming flushes air and any residual disinfectant from the extracorporeal circuit before connecting the patient.

Question 4

Which electrolyte imbalance is MOST commonly associated with muscle cramps during hemodialysis?

Accepted Answer

Hypocalcemia

Answer

Hypocalcemia causes neuromuscular irritability that manifests as muscle cramps during dialysis.

Question 5

What does the term 'Kt/V' measure in hemodialysis adequacy?

Accepted Answer

Urea clearance normalized to body water volume

Answer

Kt/V quantifies urea clearance (K × time) divided by the patient's urea distribution volume (V); a value ≥1.2 per treatment is the KDOQI minimum.

Certified Hemodialysis Technologist/Technician Exam Practice Test