CNN study guide
CNN · Work through your exam, one topic at a time.
The Certified Nephrology Nurse (CNN) credential is awarded by the Nephrology Nursing Certification Commission (NNCC) to registered nurses who demonstrate specialty knowledge in nephrology nursing. NNCC describes its certification approach as patient-focused, with the primary goals of promoting patient safety and ensuring quality of care. CNN eligibility requires RNs to have at least 3,000 hours of experience practicing in multiple areas of nephrology. The exam is an English-language certification exam intended to establish that a certified individual meets the requirements of a nationally certified healthcare professional practicing in the United States. The CNN study guide has 5 sections and about 1,262 words.
01Renal Anatomy, Physiology, and Pathophysiology
Each kidney contains about one million nephrons; the glomerulus filters plasma, and the tubules fine-tune volume, electrolytes, acid-base balance, and waste excretion. The kidney also produces erythropoietin, activates vitamin D, and regulates blood pressure through the renin-angiotensin-aldosterone system.
242 words, about 1 min02Assessment, Diagnosis, and Monitoring of the Patient with Kidney Disease
Begin with history, medications, comorbidities, volume status, blood pressure, weight trends, urine output, and access to care. Laboratory assessment includes creatinine and eGFR, BUN, electrolytes, bicarbonate, calcium, phosphorus, hemoglobin, and albuminuria.
257 words, about 1 min03Treatment Modalities and Clinical Management
Hemodialysis uses diffusion and convection across a dialyzer; peritoneal dialysis uses the peritoneal membrane with prescribed dwells; transplantation offers the best long-term outcomes for many eligible patients. Conservative kidney management is a valid choice.
263 words, about 1 min04Patient Education and Self-Management Support
Education should build health literacy and self-management skills, not just deliver facts. Assess readiness, barriers, health beliefs, numeracy, culture, language, and social support.
263 words, about 1 min05Professional Practice, Quality, and Safety
Nephrology nurses practice within scope, standards, and organizational policy. Use evidence-based protocols, document accurately, protect privacy, and escalate concerns.
237 words, about 1 min