CNOR Exam Comprehensive Questions (Frequently Tested) and Complete Solutions Graded A+

CNOR Exam Comprehensive Questions
(Frequently Tested) and Complete Solutions
Graded A+
CNOR exam: governing body and credential? - Answer: The CNOR credential is administered by the
Competency & Credentialing Institute (CCI) and validates perioperative nursing knowledge and skills for
the RN in the OR. :contentReference[oaicite:1]{index=1}



CNOR exam: broad content domains you must master - Answer: Per CCI's blueprint, focus on preop
assessment/diagnostics, sterilization/asepsis, intraop nursing care & safety, instrumentation/equipment,
anesthesia & meds safety, documentation, and professional/leadership
concepts. :contentReference[oaicite:2]{index=2}



Spaulding classification: define categories - Answer: • Critical: contact sterile tissue/vascular system →
sterilize. • Semicritical: contact mucous membranes/non-intact skin → high-level disinfection (HLD) at
minimum. • Noncritical: contact intact skin → low/intermediate-level
disinfection. :contentReference[oaicite:3]{index=3}



Steam sterilization: typical gravity cycle parameters - Answer: Common wrapped gravity-displacement
cycle: 121 °C (250 °F) for 30 minutes (exposure) with adequate drying; follow device
IFU. :contentReference[oaicite:4]{index=4}



Steam sterilization: typical prevacuum cycle parameters - Answer: Common wrapped pre-vacuum cycle:
132 °C (270 °F) for 4 minutes (exposure) with adequate drying; follow device
IFU. :contentReference[oaicite:5]{index=5}



Biological indicator (BI) organism for steam - Answer: Geobacillus stearothermophilus spores are used
to biologically monitor steam sterilization efficacy. :contentReference[oaicite:6]{index=6}



Bowie-Dick test: purpose & frequency - Answer: Used daily (before the first processed load) in pre-
vacuum steam sterilizers to detect adequate air removal/steam penetration (presence of residual
air/leaks). :contentReference[oaicite:7]{index=7}

, Chemical indicator (CI) classes: know the spectrum - Answer: Class 1 process indicators; Class 2 for
specific tests (e.g., Bowie-Dick); Classes 3-6 provide increasing sensitivity/single-parameter up to
emulating exposure conditions; always supplement but never replace BI. :contentReference[oaicite:8]
{index=8}



Event-related sterility vs. time-related - Answer: Modern practice is event-related sterility: items remain
sterile until compromised by events (moisture/pack damage), not a fixed date—unless IFU/policy states
otherwise. :contentReference[oaicite:9]{index=9}



Immediate-Use Steam Sterilization (IUSS): appropriate use - Answer: Limited to urgent situations when
no alternative is available; not for implants (unless documented urgent need and BI monitoring) and
requires cleaning, correct packaging/trays, and complete documentation. :contentReference[oaicite:10]
{index=10}



Decontamination basics before sterilization - Answer: Preclean at point of use, keep instruments moist,
transport safely to decon, use enzymatic/neutral pH detergents and water quality per IFU, inspect and
assemble correctly before packaging. :contentReference[oaicite:11]{index=11}



OR pressure & ventilation essentials - Answer: ORs are maintained at positive pressure to adjacent
areas; sufficient air changes per hour (commonly ≥15-20 ACH) to dilute contaminants; maintain pressure
monitors and door discipline. :contentReference[oaicite:12]{index=12}



OR temperature & humidity ranges - Answer: Typical recommended OR temperature 68-75 °F (20-24
°C) and relative humidity 20-60% per AORN/ASHRAE-aligned guidance and many accreditor
expectations. Follow facility policy. :contentReference[oaicite:13]{index=13}



Sterile storage room HVAC basics - Answer: Sterile storage should be positive pressure, ≤60% RH, and
within ~72-78 °F with minimum air exchanges per ASHRAE 170; monitor and
document. :contentReference[oaicite:14]{index=14}



Skin antisepsis: CHG vs. povidone-iodine - Answer: Alcohol-based CHG provides persistent activity and is
first-line for intact skin unless contraindicated; povidone-iodine is an alternative (e.g., for mucous
membranes/CHG sensitivity). Allow drying to reduce fire risk. :contentReference[oaicite:15]{index=15}