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Choosing an exam

CCRN vs PCCN: Which Exam Fits Your Unit

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CCRN vs PCCN comes down to one question: are most of your patients critically ill and unstable, or acutely ill and moderately stable but at risk of becoming unstable? AACN decides eligibility by patient acuity, not by the name on your unit door, so a stepdown nurse with ICU-level patients and an ICU nurse with mostly stable patients can both land on the less obvious exam.

This post walks through how AACN separates the two populations, how the practice hours work, where the test plans differ, and how to choose when your unit sits in between. The full CCRN and PCCN exam guides, linked at the end, cover format, fees and test day in detail.

CCRN vs PCCN at a glance

Both exams come from AACN, both have 150 questions in 3 hours (125 scored, 25 unscored pretest), and both split the scored items 80% clinical judgment and 20% Professional Caring and Ethical Practice. The license requirement, hour options and fees are the same. What differs is the patient.

AACN CCRN or PCCN comparison page, CCRN Adult and PCCN Adult pages, and cut score page.
CCRN (Adult)PCCN
PatientsCritically ill and unstableAcutely ill, moderately stable, could become unstable
Typical assignment1 nurse to 1 or 2 patients1 nurse to 3 or 4 patients
Example settingsICU, critical care, ED, PACU, trauma, transport and flightProgressive care, stepdown, telemetry, intermediate care, observation, cath lab, interventional radiology
Extra hour ruleMost hours must be with critically ill patientsHours with acutely ill adults
Passing score83 of 125 scored82 of 125 scored
Fee$260 member, $375 nonmember$260 member, $375 nonmember

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How AACN decides which exam you qualify for

AACN states that final eligibility is based on patient acuity, not unit type, because hospitals place similar patients on different units depending on beds and local practice. The unit lists above are examples, not rules.

  • CCRN patients are critically ill and unstable. Think of vasoactive drips you titrate every few minutes, mechanical ventilation, invasive hemodynamic monitoring and an assignment of one or two patients.
  • PCCN patients are acutely ill and moderately stable, with the potential to become unstable. Think of telemetry, BiPAP, stable drips, post-procedure monitoring and an assignment of three or four patients.
  • AACN names the emergency department as a practice area for both exams. An ED nurse whose hours are mostly with resuscitation-level patients fits the CCRN; one who mainly cares for stable admissions awaiting a bed may fit the PCCN.

Eligibility hours: the same numbers, a different patient

Both direct care pathways require a current, unencumbered US RN or APRN license and one of two practice options. The hours must be at a US or Canadian facility or one comparable to US standards, and a supervisor or RN or physician colleague must be able to verify them.

Same numbers for CCRN (Adult) and PCCN; AACN CCRN Adult and PCCN Adult pages.
OptionTotal hoursIn the most recent yearTime frame
Two-year1,750875Previous 2 years
Five-year2,000144Previous 5 years
  • CCRN: the hours are with acutely or critically ill adults, but the majority must be with critically ill patients.
  • PCCN: the hours are with acutely ill adults.
  • Managers, educators, preceptors and APRNs can count hours spent providing or directly supervising bedside care for either exam.

The majority rule is the practical divider. A float nurse who splits time between the ICU and stepdown needs more than half of the hours to be with critically ill patients for the CCRN. If not, the PCCN is the exam that matches.

How the test plans differ

The structure is identical, but the weights move with the patient population. The CCRN gives more space to the systems that dominate ICU care, and the PCCN gives more to cardiovascular care, where telemetry and post-procedure patients live.

AACN test plans: Adult CCRN from November 12, 2025; PCCN from February 6, 2024. AACN groups the body systems differently on each exam, so the middle rows are not exact matches.
AreaCCRN (Adult)PCCN
Cardiovascular13%20%
Respiratory12%14%
Endocrine, hematology, GI, renal (plus integumentary on CCRN; plus neurology on PCCN)21%27%
Musculoskeletal, behavioral, multisystem (plus neurology on CCRN)34%20%
Professional Caring and Ethical Practice20%20%

The bigger difference is in the questions themselves. CCRN items often ask what to change on a ventilator, a pressor or a device. PCCN items more often ask whether the current level of care is still enough: is BiPAP working, does this trend need the ICU, which patient do you see first. Both exams test the same caring and ethics framework.

Sample questions: the same lungs, two exams

The first question comes from the ICU Basics PCCN bank and the second from the CCRN bank. Both involve breathing, but they test different decisions.

Question 1 · Mechanical Ventilation & ARDS

A patient admitted with a COPD exacerbation is on BiPAP 12/5 cm H₂O with FiO₂ 0.35. After 1 hour the patient is more somnolent, and a repeat ABG shows pH 7.24, PaCO₂ 78 mm Hg, PaO₂ 68 mm Hg. Which action is MOST appropriate?

  1. Increase the FiO₂ to 0.50 and recheck the gas in another hour
  2. Decrease the inspiratory pressure to 10 to improve comfort and tolerance
  3. Notify the provider that BiPAP is failing and prepare for intubation
  4. Remove the mask for 30 minutes to let the patient rest and eat
Show the answer and rationale

Answer: C

  • A. Oxygenation is acceptable; the problem is ventilation, and more oxygen may blunt respiratory drive further.
  • B. Lowering inspiratory pressure reduces tidal volume and worsens CO₂ retention.
  • C. Correct. Worsening acidosis and mental status after 1 hour of BiPAP are criteria for NIV failure and escalation.
  • D. Interrupting support in a patient who is deteriorating accelerates respiratory failure.

Noninvasive ventilation should improve pH, PaCO₂, respiratory rate, and mental status within 1 to 2 hours. Failure to improve, or worsening somnolence and acidosis, predicts NIV failure and the need for intubation. Delaying escalation in this situation increases mortality. Increasing IPAP might help ventilation, but a deteriorating patient needs provider evaluation now.

Sources: AACN Essentials of Progressive Care, 5th ed.; GOLD COPD Report (2026); ERS/ATS Noninvasive Ventilation (2017)

Question 2 · Respiratory

A patient with ARDS is on volume-control ventilation with a tidal volume of 400 mL (6 mL/kg PBW), PEEP 12 cm H₂O, FiO₂ 0.6, and RR 28. Plateau pressure is 32 cm H₂O, and pH is 7.30. Which ventilator change is MOST appropriate?

  1. Lower the PEEP to 5 cm H₂O to reduce the plateau pressure
  2. Increase inspiratory flow to reduce the peak pressure
  3. Increase the tidal volume to improve CO₂ clearance
  4. Reduce the tidal volume toward 5 mL/kg PBW
Show the answer and rationale

Answer: D

  • A. Dropping PEEP causes derecruitment and worsening hypoxemia without addressing overdistension.
  • B. Changing flow affects peak pressure, not plateau pressure, which is the injury risk here.
  • C. A larger tidal volume would raise the plateau pressure further and increase volutrauma.
  • D. Correct. Plateau pressure above 30 (and a driving pressure of 20) calls for a smaller tidal volume. A pH of 7.30 is acceptable permissive hypercapnia.

Lung-protective ventilation in ARDS targets a tidal volume of 4–8 mL/kg PBW (starting at 6), plateau pressure of 30 cm H₂O or less, and driving pressure (plateau pressure minus PEEP) ideally below 15. Here, compliance is about 400 ÷ (32 − 12) = 20 mL/cm H₂O, which is poor. Lowering the tidal volume reduces overdistension, and the resulting permissive hypercapnia (pH of 7.20–7.25 or higher) is accepted, with the respiratory rate adjusted (up to about 35).

Sources: AACN Essentials of Critical Care, 5th ed.; ARDSNet Ventilation Protocol Card (2008); ATS/ESICM/SCCM ARDS Ventilation (2017)

Walk-through for the BiPAP question: after an hour of noninvasive ventilation the pH has fallen and the patient is sleepier. Those are the signs that BiPAP is failing, not that it needs fine tuning. More oxygen does nothing for the carbon dioxide, a mask break removes the support, and lowering the pressure ventilates less. The progressive care skill is recognizing that the patient needs a higher level of care and calling for it now.

Walk-through for the ARDS question: the patient is already intubated, so the decision is a ventilator setting. The plateau pressure is above the usual ceiling of 30, so the lungs are overdistended at the current tidal volume. Raising the volume makes that worse, dropping PEEP to 5 loses recruited lung, and changing flow lowers the peak but not the plateau. Lowering the tidal volume and accepting some carbon dioxide rise is the lung-protective answer.

Which exam to take first

  1. Count your hours honestly by acuity, not by unit. If the critically ill share is clearly over half, the CCRN fits; if not, the PCCN does.
  2. Match the exam to the patients you will keep caring for. The CCRN renewal also asks that most hours stay with critically ill patients, so a nurse moving to stepdown may find the PCCN easier to keep.
  3. If you are new to an ICU and still building hours, the PCCN is not a shortcut: you still need hours with the population it tests.
  4. Whichever you pick, take a baseline mock exam first and study by weight. The area that is worth the most on your exam is not always the one you see most on shift.

Both credentials renew every 3 years with 100 continuing education points across AACN categories or by retaking the exam, plus the practice hours for your pathway. If you fail, either exam can be retaken up to four times in 12 months.

Frequently asked questions

Is the CCRN harder than the PCCN?

They test different patients, so difficulty depends on your practice. Both have 125 scored questions; the passing scores are 83 for the Adult CCRN and 82 for the PCCN.

Can a stepdown nurse take the CCRN?

Only if most of the practice hours are with critically ill patients. AACN decides eligibility by patient acuity, not unit name, so a stepdown unit that cares for unstable patients may qualify.

Can ED nurses take the CCRN or PCCN?

Yes. AACN lists the emergency department as an example setting for both exams. Which one fits depends on how sick your patients are.

Do the CCRN and PCCN have the same eligibility hours?

The numbers are the same: 1,750 hours in 2 years with 875 in the last year, or 2,000 hours in 5 years with 144 in the last year. The CCRN adds that most hours must be with critically ill patients.

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Sources

  1. AACN. Should I Apply for the CCRN or PCCN Certification Exam? Link
  2. AACN. CCRN (Adult) – Direct Care Pathway. Link
  3. AACN. PCCN (Adult) – Direct Care Pathway. Link
  4. AACN. Frequently Asked Questions: CCRN Certification (Direct Care Pathway). Link
  5. AACN. Frequently Asked Questions About PCCN Certification. Link
  6. AACN. Certification Exam Statistics and Cut Scores. Link
  7. AACN Newsroom. Revised CCRN Certification Exams Launch Nov. 12, 2025. Link
  8. Qadir N, Sahetya S, Munshi L, et al. An update on management of adult patients with acute respiratory distress syndrome: an official American Thoracic Society clinical practice guideline. Am J Respir Crit Care Med. 2024;209(1):24-36. Link
  9. Liu T, Yan X, Lu J. Two-hour dynamic reassessment of noninvasive ventilation failure risk in acute exacerbation of chronic obstructive pulmonary disease. Front Med (Lausanne). 2026. Link