CDN Dialysis Nursing 3

Question 1

A patient on continuous renal replacement therapy (CRRT) develops filter clotting after 4 hours. Which intervention should the nurse assess first?

Accepted Answer

Evaluate anticoagulation adequacy and citrate/heparin dosing

Answer

Early filter clotting is most commonly related to inadequate anticoagulation, making assessment of anticoagulant delivery the priority.

Question 2

Which dietary restriction is most critical for a hemodialysis patient between treatments?

Accepted Answer

Restrict fluid intake to 1,000 mL/day plus urine output

Answer

Fluid restriction to 1,000 mL plus urine output prevents dangerous interdialytic weight gain and pulmonary edema.

Question 3

During hemodialysis, the venous pressure alarm sounds high. Which cause should the nurse investigate first?

Accepted Answer

Kinked or occluded venous blood line

Answer

A kinked or occluded venous line creates resistance to blood return, causing high venous pressure alarms.

Question 4

Secondary hyperparathyroidism in dialysis patients is primarily triggered by:

Accepted Answer

Vitamin D deficiency and hyperphosphatemia

Answer

Reduced kidney activation of vitamin D and elevated phosphate both stimulate PTH secretion, causing secondary hyperparathyroidism.

Question 5

A nurse preparing to initiate hemodialysis discovers the conductivity alarm is reading 17 mS/cm instead of the expected 13–15 mS/cm. The correct action is:

Accepted Answer

Do not initiate dialysis; troubleshoot the conductivity reading

Answer

Abnormal conductivity indicates incorrect dialysate concentration, which can cause severe electrolyte imbalances and hemolysis if used.

CDN - Certified Dialysis Nurse Practice Test

CDN - Certified Dialysis Nurse Practice Test

CDN Dialysis Nursing 3