CDN Certified Dialysis Nurse 4

Question 1

Which of the following best describes the role of the dialyzer membrane in hemodialysis?

Accepted Answer

It allows diffusion of solutes down concentration gradients

Answer

The dialyzer membrane allows passive diffusion of solutes from areas of higher concentration (blood) to lower concentration (dialysate).

Question 2

A dialysis patient presents with sudden onset chest pain, dyspnea, and cyanosis during treatment. Air embolism is suspected. The immediate nursing action is to:

Accepted Answer

Stop the blood pump, clamp the venous line, and position patient on left side in Trendelenburg

Answer

Stopping blood flow, clamping the venous line, and positioning the patient left lateral Trendelenburg traps air in the right ventricle apex away from the pulmonary circulation.

Question 3

Which ESRD complication is characterized by elevated PTH, hypocalcemia, and hyperphosphatemia?

Accepted Answer

Secondary hyperparathyroidism

Answer

Secondary hyperparathyroidism in ESRD results from chronically low calcium and high phosphorus stimulating excessive PTH production.

Question 4

When teaching a patient about AV fistula care at home, which instruction is most important?

Accepted Answer

Avoid blood pressure measurement and blood draws in that arm

Answer

Avoiding BP cuffs, blood draws, and IV access in the fistula arm prevents compression and vessel damage that could compromise the access.

Question 5

A hemodialysis patient develops sudden hypotension during treatment. Which intervention should the nurse perform first?

Accepted Answer

Place the patient in Trendelenburg position and reduce ultrafiltration rate

Answer

Trendelenburg positioning improves venous return while reducing the ultrafiltration rate addresses the primary cause of intradialytic hypotension.

CDN - Certified Dialysis Nurse Practice Test

CDN - Certified Dialysis Nurse Practice Test

CDN Certified Dialysis Nurse 4