NCCT Hemodialysis Technician 2

Question 1

What anticoagulant is most commonly used during hemodialysis to prevent clotting in the extracorporeal circuit?

Accepted Answer

Heparin

Answer

Warfarin

Answer

Enoxaparin

Answer

Aspirin

Question 2

Ultrafiltration in hemodialysis refers to:

Accepted Answer

Removal of excess fluid from the blood by a transmembrane pressure gradient

Answer

Filtering bacteria from the dialysate supply

Answer

Sterilizing the dialyzer membrane between uses

Answer

Increasing blood flow rate through the circuit

Question 3

A patient on hemodialysis develops muscle cramps mid-treatment. What is the most likely cause?

Accepted Answer

Rapid fluid removal or electrolyte imbalance

Answer

Excessively high blood flow rate

Answer

Dialysate temperature being too high

Answer

Hypernatremia from the dialysate

Question 4

The Kt/V measurement in hemodialysis is used to:

Accepted Answer

Quantify the adequacy of the dialysis treatment delivered

Answer

Measure dialysate temperature regulation accuracy

Answer

Calculate membrane permeability index

Answer

Calibrate blood pump flow rate

Question 5

Which laboratory value is most critical to check before starting a hemodialysis session?

Accepted Answer

Serum potassium

Answer

Hemoglobin A1c

Answer

Fasting blood glucose

Answer

Prothrombin time

Question 6

Which type of vascular access carries the highest risk of bloodstream infection in hemodialysis patients?

Accepted Answer

Central venous catheter

Answer

Arteriovenous fistula

Answer

Arteriovenous graft

Answer

Subcutaneous port

Question 7

When cannulating an AV fistula using the buttonhole technique, the hemodialysis technician:

Accepted Answer

Inserts needles at the exact same site and angle each session to create a fibrous tunnel

Answer

Rotates needle insertion sites with each treatment session

Answer

Uses a progressively larger gauge needle each session

Answer

Places sharp needles randomly within the fistula segment