CHT Hemodialysis Technologist 4

Question 1

When reprocessing a dialyzer with peracetic acid, what is the minimum required dwell time to achieve adequate disinfection?

Accepted Answer

11 hours

Answer

Peracetic acid dialyzer reprocessing requires a minimum 11-hour contact time to ensure effective high-level disinfection per AAMI standards.

Question 2

A patient reports itching, hives, and bronchospasm within minutes of starting dialysis with a new dialyzer. This presentation is MOST consistent with:

Accepted Answer

Type A (anaphylactic) first-use reaction

Answer

Type A first-use reactions are IgE-mediated anaphylactic responses that occur within minutes and include urticaria, bronchospasm, and cardiovascular collapse.

Question 3

What is the purpose of the 'negative pressure' test performed on a dialysis machine?

Accepted Answer

Verify ultrafiltration rate accuracy

Answer

The negative pressure test (or ultrafiltration test) verifies the machine's ability to accurately achieve the prescribed ultrafiltration rate.

Question 4

Which of the following is the MOST appropriate needle gauge for cannulating a well-developed AV fistula?

Accepted Answer

16-gauge

Answer

16-gauge needles are standard for AV fistula cannulation, balancing adequate blood flow (≥200 mL/min) with minimizing vessel trauma.

Question 5

Which AAMI water quality standard specifies the maximum allowable level of endotoxins in water used for hemodialysis?

Accepted Answer

0.25 EU/mL for standard, 0.03 EU/mL for ultrapure

Answer

AAMI/ANSI standards specify ≤0.25 EU/mL for standard dialysis water and ≤0.03 EU/mL for ultrapure water used in online hemodiafiltration.

Certified Hemodialysis Technologist/Technician Exam Practice Test

Certified Hemodialysis Technologist/Technician Exam Practice Test

CHT Hemodialysis Technologist 4