NCCT Hemodialysis Technician 3

Question 1

A hemodialysis patient's 'dry weight' is defined as:

Accepted Answer

The patient's target weight without excess fluid retention, at which the patient is euvolemic

Answer

The patient's weight before eating breakfast on dialysis days

Answer

The weight of the used dialyzer after treatment

Answer

The patient's post-treatment weight after all fluid is removed

Question 2

Which clinical presentation is most indicative of an air embolism during hemodialysis?

Accepted Answer

Sudden chest pain, coughing, dyspnea, and cyanosis

Answer

Gradual rise in blood pressure with bradycardia

Answer

Isolated decrease in heart rate

Answer

Mild headache and mild nausea

Question 3

What is the recommended blood flow rate (Qb) for most adult hemodialysis patients?

Accepted Answer

200–400 mL/min

Answer

50–100 mL/min

Answer

500–600 mL/min

Answer

100–150 mL/min

Question 4

Which dietary restrictions are most critical for patients receiving maintenance hemodialysis?

Accepted Answer

Low potassium and low phosphorus intake

Answer

Low carbohydrate and high dietary fiber only

Answer

High sodium and high potassium intake

Answer

Unrestricted fluid intake to compensate for dialysis losses

Question 5

When palpating an AV fistula, the term 'thrill' refers to:

Accepted Answer

A buzzing or vibrating sensation felt on palpation over the fistula

Answer

A bruit detected only with a stethoscope during auscultation

Answer

The visible pulsatile movement of the fistula under the skin

Answer

Pain or tenderness at the needle cannulation site

Question 6

When a hemodialysis machine alarm indicates low arterial pressure, the technician's first action should be to:

Accepted Answer

Check for kinks in the blood lines, assess vascular access, and evaluate the patient for hypotension

Answer

Immediately increase the blood pump speed

Answer

Stop the treatment and return blood to the patient at once

Answer

Increase the dialysate flow rate to compensate

Question 7

Which of the following best describes the purpose of the dialyzer in the hemodialysis circuit?

Accepted Answer

To serve as an artificial kidney by filtering waste products and excess fluid across a semipermeable membrane

Answer

To pump blood through the extracorporeal circuit under pressure

Answer

To add replacement electrolytes directly into the patient's bloodstream

Answer

To warm the blood to body temperature before returning it to the patient