CNOR Certification Exam Perioperative
Nursing Comprehensive Review Official
Practice Exam Actual Exam 2026/2027 with
Detailed Rationales | Complete Exam-Style
Questions | Pass Guaranteed – A+ Graded
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SECTION 1: PRE/POSTOPERATIVE PATIENT ASSESSMENT & DIAGNOSIS Q1 – Q6
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Question 1 of 50
A 68-year-old patient with a history of atrial fibrillation on warfarin is scheduled for an elective
total knee arthroplasty in three days. During the preoperative telephone assessment, the
patient reports taking the last dose of warfarin this morning and denies any bleeding
complications. The perioperative nurse recognizes that coordination with the surgeon and
anesthesia provider is most urgently needed regarding which parameter?
A. Obtaining a preoperative hemoglobin level to establish baseline anemia status
B. Evaluating the patient's international normalized ratio prior to discontinuing
anticoagulation
C. Confirming the patient has arranged for postoperative physical therapy at home
D. Assessing the patient's dental clearance to prevent postoperative infection
Correct Answer: B
Rationale: The AORN Guidelines for Perioperative Practice emphasize that patients on
anticoagulation therapy require collaborative management of bleeding risk, and the INR must
be evaluated to determine if warfarin cessation timing is appropriate before elective surgery.
Option A represents a standard preoperative assessment but does not address the
immediate pharmacological bleeding risk posed by ongoing warfarin therapy. Remember that
anticoagulation management is a high-yield topic on the CNOR exam because it bridges
assessment, safety, and interprofessional communication.
Question 2 of 50
During the preoperative skin assessment of a 54-year-old patient scheduled for laparoscopic
cholecystectomy, the nurse notes a 3 cm erythematous, warm area with purulent drainage on
the patient's right lower abdomen. The patient states this skin lesion developed two days ago
,after a minor scratch. Based on this finding, the perioperative nurse should anticipate which
action?
A. Proceeding with surgery after applying an antimicrobial dressing to the affected area
B. Documenting the finding and notifying the surgeon to evaluate postponing the procedure
C. Prepping the abdomen with an alcohol-based solution to reduce bacterial load
D. Obtaining a wound culture after induction of anesthesia to avoid delaying the case
Correct Answer: D
Rationale: Active infection at or near the surgical site significantly increases the risk of
surgical site infection, and the AORN guidelines require that such findings be reported to the
surgeon for possible postponement and treatment. Option A is incorrect because applying a
dressing does not eliminate the infectious source and violates the principle of addressing
active infection before elective surgery. On the CNOR exam, always prioritize patient safety
over case schedule efficiency when these two values conflict.
Question 3 of 50
A 42-year-old patient with a body mass index of 42 kg/m² and severe obstructive sleep apnea
presents for an open gastric bypass procedure. The perioperative nurse conducting the
preoperative assessment recognizes that this patient is at highest risk for which
postoperative complication?
A. Postoperative nausea and vomiting requiring antiemetic rescue therapy
B. Airway obstruction and hypoventilation during the immediate recovery phase
C. Hypothermia due to increased body surface area and anesthesia effects
D. Surgical site infection related to subcutaneous tissue thickness
Correct Answer: A
Rationale: Patients with severe OSA and morbid obesity are at markedly increased risk for
postoperative airway obstruction, hypoventilation, and respiratory compromise, particularly
when opioid analgesics are administered during recovery. Option B is incorrect because while
infection risk is elevated in obese patients, the immediate life-threatening concern in OSA is
respiratory, not infectious. CNOR candidates should distinguish between chronic risk factors
and acute, life-threatening perioperative risks.
Question 4 of 50
The circulating nurse is reviewing the preoperative laboratory results for a 78-year-old patient
scheduled for transurethral resection of the prostate. The potassium level is reported at 5.8
mEq/L, and the patient is asymptomatic. The nurse understands that this finding requires
which priority action?
A. Proceeding with surgery while preparing calcium gluconate for intraoperative use
, B. Notifying the anesthesia provider and surgeon immediately to evaluate proceeding
C. Rechecking the potassium level after administering an insulin and glucose infusion
D. Documenting the value and continuing with routine preoperative preparation
Correct Answer: C
Rationale: A potassium level of 5.8 mEq/L represents significant hyperkalemia that increases
the risk of cardiac dysrhythmias under anesthesia, and the perioperative nurse must
communicate abnormal critical values to the surgical team for evaluation before proceeding.
Option A is incorrect because proceeding without team notification violates patient safety
standards and assumes an intervention without provider orders. Critical values always
require immediate communication; the CNOR exam tests whether you recognize when to
stop the routine and escalate.
Question 5 of 50
During the preoperative assessment interview, a patient scheduled for breast reconstruction
reports a severe allergy to latex that produces angioedema and respiratory distress. The
perioperative nurse recognizes that which additional item must be removed from the
operating room environment?
A. Polyisoprene surgical gloves stored in the supply cabinet
B. Chlorhexidine gluconate skin preparation solution
C. Tape adhesives containing acrylic compounds
D. Rubber injection ports on medication vials
Correct Answer: B
Rationale: Natural rubber latex is found in numerous OR products including injection ports,
tourniquets, and certain gloves, and a history of severe latex allergy requires removal of all
latex-containing items to prevent anaphylaxis. Option A is incorrect because polyisoprene is
a synthetic latex alternative that does not contain the allergenic proteins found in natural
rubber latex. Many candidates confuse polyisoprene with natural latex, so read product labels
carefully on the exam.
Question 6 of 50
A 35-year-old patient with insulin-dependent diabetes mellitus is scheduled for an anterior
cervical discectomy and fusion. The patient's preoperative blood glucose is 48 mg/dL, and
the patient reports feeling lightheaded. The circulating nurse should take which action?
A. Administering a bolus of intravenous dextrose and rechecking the glucose level
B. Proceeding with anesthesia induction to avoid delaying the surgical schedule
C. Giving the patient 4 ounces of orange juice while completing the preoperative checklist
D. Notifying the surgeon and anesthesia provider while delaying surgery until the glucose
stabilizes
Nursing Comprehensive Review Official
Practice Exam Actual Exam 2026/2027 with
Detailed Rationales | Complete Exam-Style
Questions | Pass Guaranteed – A+ Graded
══════════════════════════════════════
SECTION 1: PRE/POSTOPERATIVE PATIENT ASSESSMENT & DIAGNOSIS Q1 – Q6
══════════════════════════════════════
Question 1 of 50
A 68-year-old patient with a history of atrial fibrillation on warfarin is scheduled for an elective
total knee arthroplasty in three days. During the preoperative telephone assessment, the
patient reports taking the last dose of warfarin this morning and denies any bleeding
complications. The perioperative nurse recognizes that coordination with the surgeon and
anesthesia provider is most urgently needed regarding which parameter?
A. Obtaining a preoperative hemoglobin level to establish baseline anemia status
B. Evaluating the patient's international normalized ratio prior to discontinuing
anticoagulation
C. Confirming the patient has arranged for postoperative physical therapy at home
D. Assessing the patient's dental clearance to prevent postoperative infection
Correct Answer: B
Rationale: The AORN Guidelines for Perioperative Practice emphasize that patients on
anticoagulation therapy require collaborative management of bleeding risk, and the INR must
be evaluated to determine if warfarin cessation timing is appropriate before elective surgery.
Option A represents a standard preoperative assessment but does not address the
immediate pharmacological bleeding risk posed by ongoing warfarin therapy. Remember that
anticoagulation management is a high-yield topic on the CNOR exam because it bridges
assessment, safety, and interprofessional communication.
Question 2 of 50
During the preoperative skin assessment of a 54-year-old patient scheduled for laparoscopic
cholecystectomy, the nurse notes a 3 cm erythematous, warm area with purulent drainage on
the patient's right lower abdomen. The patient states this skin lesion developed two days ago
,after a minor scratch. Based on this finding, the perioperative nurse should anticipate which
action?
A. Proceeding with surgery after applying an antimicrobial dressing to the affected area
B. Documenting the finding and notifying the surgeon to evaluate postponing the procedure
C. Prepping the abdomen with an alcohol-based solution to reduce bacterial load
D. Obtaining a wound culture after induction of anesthesia to avoid delaying the case
Correct Answer: D
Rationale: Active infection at or near the surgical site significantly increases the risk of
surgical site infection, and the AORN guidelines require that such findings be reported to the
surgeon for possible postponement and treatment. Option A is incorrect because applying a
dressing does not eliminate the infectious source and violates the principle of addressing
active infection before elective surgery. On the CNOR exam, always prioritize patient safety
over case schedule efficiency when these two values conflict.
Question 3 of 50
A 42-year-old patient with a body mass index of 42 kg/m² and severe obstructive sleep apnea
presents for an open gastric bypass procedure. The perioperative nurse conducting the
preoperative assessment recognizes that this patient is at highest risk for which
postoperative complication?
A. Postoperative nausea and vomiting requiring antiemetic rescue therapy
B. Airway obstruction and hypoventilation during the immediate recovery phase
C. Hypothermia due to increased body surface area and anesthesia effects
D. Surgical site infection related to subcutaneous tissue thickness
Correct Answer: A
Rationale: Patients with severe OSA and morbid obesity are at markedly increased risk for
postoperative airway obstruction, hypoventilation, and respiratory compromise, particularly
when opioid analgesics are administered during recovery. Option B is incorrect because while
infection risk is elevated in obese patients, the immediate life-threatening concern in OSA is
respiratory, not infectious. CNOR candidates should distinguish between chronic risk factors
and acute, life-threatening perioperative risks.
Question 4 of 50
The circulating nurse is reviewing the preoperative laboratory results for a 78-year-old patient
scheduled for transurethral resection of the prostate. The potassium level is reported at 5.8
mEq/L, and the patient is asymptomatic. The nurse understands that this finding requires
which priority action?
A. Proceeding with surgery while preparing calcium gluconate for intraoperative use
, B. Notifying the anesthesia provider and surgeon immediately to evaluate proceeding
C. Rechecking the potassium level after administering an insulin and glucose infusion
D. Documenting the value and continuing with routine preoperative preparation
Correct Answer: C
Rationale: A potassium level of 5.8 mEq/L represents significant hyperkalemia that increases
the risk of cardiac dysrhythmias under anesthesia, and the perioperative nurse must
communicate abnormal critical values to the surgical team for evaluation before proceeding.
Option A is incorrect because proceeding without team notification violates patient safety
standards and assumes an intervention without provider orders. Critical values always
require immediate communication; the CNOR exam tests whether you recognize when to
stop the routine and escalate.
Question 5 of 50
During the preoperative assessment interview, a patient scheduled for breast reconstruction
reports a severe allergy to latex that produces angioedema and respiratory distress. The
perioperative nurse recognizes that which additional item must be removed from the
operating room environment?
A. Polyisoprene surgical gloves stored in the supply cabinet
B. Chlorhexidine gluconate skin preparation solution
C. Tape adhesives containing acrylic compounds
D. Rubber injection ports on medication vials
Correct Answer: B
Rationale: Natural rubber latex is found in numerous OR products including injection ports,
tourniquets, and certain gloves, and a history of severe latex allergy requires removal of all
latex-containing items to prevent anaphylaxis. Option A is incorrect because polyisoprene is
a synthetic latex alternative that does not contain the allergenic proteins found in natural
rubber latex. Many candidates confuse polyisoprene with natural latex, so read product labels
carefully on the exam.
Question 6 of 50
A 35-year-old patient with insulin-dependent diabetes mellitus is scheduled for an anterior
cervical discectomy and fusion. The patient's preoperative blood glucose is 48 mg/dL, and
the patient reports feeling lightheaded. The circulating nurse should take which action?
A. Administering a bolus of intravenous dextrose and rechecking the glucose level
B. Proceeding with anesthesia induction to avoid delaying the surgical schedule
C. Giving the patient 4 ounces of orange juice while completing the preoperative checklist
D. Notifying the surgeon and anesthesia provider while delaying surgery until the glucose
stabilizes
