CDN Vocabulary Game
Exam terms with clues and explanations by OpenExamPrep.
About the CDN Vocabulary Games
4 free word games built on 20 CDN terms across 4 topics. Every game deals terms at random and shows what each term means, so you can keep playing as long as you like.
How to Play
- 1.Read the clue and type the term (3 to 6 letters).
- 2.Green: right spot. Yellow: wrong spot. Gray: not in the term.
- 3.Solve it in 6 tries, then read the explanation.
- 1.Swap two neighboring tiles to line up 3 of the same term.
- 2.Longer lines, two lines at once and chains score more.
- 3.Play until no swap can make a line.
- 1.Flip two cards. A matching pair stays face up.
- 2.Each pair you find shows what the term means.
- 3.Clear the board in as few moves as you can.
- 1.Find each listed term in the letter grid.
- 2.Drag across its letters: across, down or diagonally.
- 3.Find all five as fast as you can.
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Topics in the CDN Vocabulary Game
Chronic HD unit
Nephrology concepts
AKI and transplant care
Water treatment
Sources for these terms (8)
- Hemodialysis · Source checked 2026-11-04
- Eating & Nutrition for Hemodialysis · Source checked 2026-11-04
- 42 CFR 494.50 - Condition: Reuse of hemodialyzers and bloodlines · Source checked 2026-11-04
- 42 CFR 494.40 - Condition: Water and dialysate quality · Source checked 2026-11-04
- KDIGO 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease · Source checked 2026-11-04
- Anemia in Chronic Kidney Disease · Source checked 2026-11-04
- Edema · Source checked 2026-11-04
- CDN Certification Preparation Guide (for test takers starting 9/1/2026) · Source checked 2026-11-04
About the CDN Exam
The CDN (Certified Dialysis Nurse) exam validates expertise in hemodialysis nursing care. Its blueprint effective September 1, 2026 covers the chronic hemodialysis unit (ESRD), concepts of kidney disease in adults, hemodialysis for patients with AKI or post-transplant delayed graft function, and water for dialysis. It tests hemodialysis principles and procedures, vascular access care, complications, medications, infection control, patient education, and collaboration in dialysis settings.
Exam sponsor: NNCC (Nephrology Nursing Certification Commission). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Questions
150 questions
Time Limit
3 hours
Passing Score
Standard score 95 (70% correct)
Reported exam pass rate: 65%. 2025 CDN pass rate (NNCC 2025-2026 Annual Report) This describes exam candidates, not OpenExamPrep users or results from using our resources. Exam sponsor website
Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.
Frequently Asked Questions
Is the CDN vocabulary game free?
Yes. The game is free to play with no sign-up. Signing in adds AI explanations for any term.
How do the CDN vocabulary games work?
There are 4 games built on 20 CDN terms. In Guess the Term, a clue describes one term and you have six tries to spell it, with green, yellow and gray letters showing how close you are. In Term Match, six terms appear as colored tiles; swap neighbors to line up three or more of the same term, and each match shows what the term means. In Term Pairs, twelve face-down cards hide six pairs of terms; flip two at a time to find each pair, and every pair you find shows what the term means. In Term Search, five terms hide in a grid of letters, reading across, down or diagonally; drag across a term to circle it, and each term you find shows what it means.
Where do the CDN terms come from?
OpenExamPrep researched each term from the NNCC (Nephrology Nursing Certification Commission) content outline and primary sources, listed under Sources on this page. The game is independent study material, not an official exam resource.
What is the CDN certification?
CDN (Certified Dialysis Nurse) is a certification from the NNCC for registered nurses who care for patients receiving in-center hemodialysis. It validates expertise in hemodialysis care for patients with ESRD, AKI or post-transplant delayed graft function, kidney disease concepts, and water treatment for dialysis.
How many questions are on the CDN exam?
The CDN exam has 150 multiple-choice questions with a 3-hour time limit; about 25 are unscored pilot questions. You pass with a standard score of 95, which NNCC says is achieved by answering 70% of questions correctly. Chronic HD Unit (ESRD) is the largest content area at 52% of the exam.