CHT Certified Hemodialysis Technician 5

Question 1

The Association for the Advancement of Medical Instrumentation (AAMI) standard for maximum allowable bacteria count in water used for hemodialysis is:

Accepted Answer

100 CFU/mL

Answer

AAMI standards require dialysis water to contain fewer than 100 CFU/mL of bacteria to ensure patient safety during treatment.

Question 2

When disconnecting a patient at the end of hemodialysis, the blood is returned to the patient using:

Accepted Answer

Normal saline rinse-back through the arterial line

Answer

Blood is returned at treatment end by infusing normal saline through the arterial line, pushing blood from the circuit back to the patient through the venous line.

Question 3

A patient's dialysis adequacy lab results show a URR of 58%. According to KDOQI, this result indicates:

Accepted Answer

Inadequate dialysis requiring intervention

Answer

KDOQI recommends a minimum URR of 65%; a URR of 58% is below target and indicates inadequate urea reduction, requiring assessment of treatment parameters.

Question 4

Which action is the technician's FIRST priority when a patient reports sudden chest pain and difficulty breathing during dialysis?

Accepted Answer

Notify the charge nurse or physician immediately and assess for air embolism

Answer

Sudden chest pain with dyspnea during dialysis is a medical emergency potentially indicating air embolism, cardiac event, or hemolysis requiring immediate physician notification.

Question 5

Aluminum toxicity in dialysis patients historically occurred most commonly as a result of:

Accepted Answer

High aluminum content in dialysate from inadequately treated water

Answer

Before modern water treatment standards, inadequately purified water delivered aluminum directly into the bloodstream via dialysate, causing dialysis dementia and bone disease.

Certified Hemodialysis Technologist/Technician Exam Practice Test

Certified Hemodialysis Technologist/Technician Exam Practice Test

CHT Certified Hemodialysis Technician 5