CHT Hemodialysis Technologist 5

Question 1

Which of the following BEST describes the 'buttonhole' cannulation technique for AV fistulas?

Accepted Answer

Using the same needle insertion site and angle every treatment to create a track

Answer

The buttonhole technique uses the exact same puncture site and angle repeatedly, forming a fibrous tunnel that allows blunt needle insertion and reduces trauma.

Question 2

A patient's access recirculation is measured at 25%. What does this indicate?

Accepted Answer

Dialyzed blood is re-entering the arterial needle, reducing treatment efficiency

Answer

High recirculation (>10–15%) means already-dialyzed blood re-enters the arterial needle, diluting the uremic blood and significantly reducing Kt/V.

Question 3

Which parameter is adjusted on the dialysis machine to control the rate of fluid removal from the patient?

Accepted Answer

Ultrafiltration rate (UFR)

Answer

The ultrafiltration rate directly controls the volume of fluid removed per hour through convective transport across the dialyzer membrane.

Question 4

OSHA's Bloodborne Pathogens Standard requires that hemodialysis technicians use which type of precautions with all patients?

Accepted Answer

Standard (Universal) Precautions with all patients

Answer

Standard Precautions treat all patient blood and body fluids as potentially infectious, requiring gloves, face protection, and gowns as appropriate.

Question 5

A hemodialysis patient with a serum phosphorus of 7.2 mg/dL is MOST likely to require which intervention?

Accepted Answer

Phosphate binder therapy and dietary phosphorus restriction

Answer

Hyperphosphatemia in dialysis patients is managed with phosphate binders taken with meals and limiting dietary intake of phosphorus-rich foods.

Certified Hemodialysis Technologist/Technician Exam Practice Test

Certified Hemodialysis Technologist/Technician Exam Practice Test

CHT Hemodialysis Technologist 5