CNOR (CERTIFIED NURSE OPERATING ROOM) EXAM TEST BANK
2026/2027 NEWEST EXAM 2 VERSIONS (VERSION A AND B)
COMPLETE 200 QUESTIONS WITH DETAILED VERIFIED
ANSWERS (100% CORRECT ANSWERS) /ALREADY GRADED A+
1|Page
,CNOR (CERTIFIED NURSE OPERATING ROOM) EXAM TEST BANK 2026/2027
2026/2027 Examination
Total Questions: 200
Instructions:
• Answer all questions.
• Select the single best answer.
• Each question has four answer choices: A, B, C, and D.
• Select only ONE answer for each question.
SECTION 1: PREOPERATIVE PATIENT ASSESSMENT AND DIAGNOSIS
Questions 1–25
Q1. During the preoperative assessment, a patient reports a family history of malignant
hyperthermia. Which action should the perioperative nurse prioritize?
A. Document the history and continue with standard anesthesia planning
B. Notify the anesthesia professional and ensure dantrolene sodium is immediately available
C. Ask the patient to sign a waiver acknowledging the increased risk
D. Schedule the patient for regional anesthesia instead of general anesthesia
Correct Answer: B. Notify the anesthesia professional and ensure dantrolene sodium is
immediately available
Rationale: A family history of malignant hyperthermia is a critical finding that significantly
increases the patient's risk during general anesthesia. The perioperative nurse must immediately
communicate this to the anesthesia professional and verify that dantrolene sodium, the specific
treatment for malignant hyperthermia crisis, is readily accessible. Simply documenting the history
(A) does not ensure patient safety. A waiver (C) does not mitigate clinical risk. While regional
anesthesia may be considered, the nurse cannot independently make that decision (D), and the
anesthesia professional must be involved in the plan.
Q2. A patient scheduled for elective surgery reports taking warfarin daily. Which laboratory
value is most critical for the nurse to verify before surgery?
A. Complete blood count
B. International Normalized Ratio (INR)
C. Serum potassium
D. Blood urea nitrogen
Correct Answer: B. International Normalized Ratio (INR)
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, Rationale: Warfarin is an anticoagulant that prolongs clotting time by inhibiting vitamin K-
dependent clotting factors. The INR specifically measures the extrinsic pathway of coagulation and is
the standard test for monitoring warfarin therapy. An elevated INR indicates increased bleeding risk
during surgery. While a complete blood count (A) assesses for anemia and infection, it does not
directly measure anticoagulation status. Serum potassium (C) and BUN (D) are relevant to overall
health but do not assess warfarin's primary effect.
Q3. The perioperative nurse is reviewing the surgical consent form with a patient who speaks
limited English. The patient appears confused about the procedure. What is the nurse's best action?
A. Have the patient sign the consent and proceed with surgery
B. Ask a family member who speaks English to explain the procedure
C. Request a qualified medical interpreter to facilitate informed consent
D. Postpone the surgery until the patient learns sufficient English
Correct Answer: C. Request a qualified medical interpreter to facilitate informed consent
Rationale: Informed consent requires that the patient understands the procedure, risks,
benefits, and alternatives. A language barrier prevents valid informed consent. Using a qualified
medical interpreter ensures accurate communication and protects patient rights. Having the patient
sign without understanding (A) invalidates consent. Family members (B) may not accurately convey
medical information and may filter or misinterpret details. Postponing surgery until the patient
learns English (D) is unnecessary and discriminatory when interpreter services are available.
Q4. During preoperative assessment, a patient is classified as ASA Physical Status IV. What does
this classification indicate?
A. A healthy patient with no systemic disease
B. A patient with mild systemic disease
C. A patient with severe systemic disease that is a constant threat to life
D. A declared brain-dead patient whose organs are being removed for donation
Correct Answer: C. A patient with severe systemic disease that is a constant threat to life
Rationale: The ASA Physical Status Classification System categorizes patients based on physical
health. ASA I (A) is a healthy patient. ASA II indicates mild systemic disease. ASA III indicates severe
systemic disease. ASA IV indicates severe systemic disease that is a constant threat to life. ASA V is a
moribund patient not expected to survive without the operation. ASA VI (D) is a declared brain-dead
patient. Understanding this classification helps the perioperative team anticipate anesthetic risk and
resource needs.
Q5. A patient scheduled for a total knee arthroplasty reports taking St. John's wort for
depression. Why is this finding significant for perioperative planning?
A. It may cause hypertension during anesthesia
B. It can increase the metabolism of many anesthetic agents
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, C. It decreases the risk of postoperative nausea and vomiting
D. It provides additional pain relief during surgery
Correct Answer: B. It can increase the metabolism of many anesthetic agents
Rationale: St. John's wort is a potent inducer of cytochrome P450 enzymes, particularly CYP3A4.
This can accelerate the metabolism of numerous medications, including anesthetic agents, opioids,
and other perioperative drugs, potentially leading to inadequate anesthesia or analgesia. It does not
typically cause hypertension during anesthesia (A). It does not protect against postoperative nausea
and vomiting (C). While it may have some analgesic properties, this is not the primary perioperative
concern (D).
Q6. The perioperative nurse is assessing an older adult patient scheduled for hip fracture repair.
Which physiological change of aging is most important to consider during preoperative assessment?
A. Increased cardiac output
B. Decreased renal function
C. Increased hepatic blood flow
D. Decreased sensitivity to pain
Correct Answer: B. Decreased renal function
Rationale: Aging is associated with a progressive decline in renal function, including decreased
glomerular filtration rate and renal blood flow. This affects drug clearance and elimination,
increasing the risk of drug toxicity and prolonged effects of anesthetic agents and other medications.
Older adults typically have decreased, not increased, cardiac output (A). Hepatic blood flow
decreases with age (C). Pain sensitivity generally remains intact or may be altered, but this is not the
most critical physiological consideration for medication management (D).
Q7. A patient with a known allergy to latex is scheduled for surgery. Which preoperative action is
essential?
A. Schedule the surgery as the last case of the day
B. Ensure the entire surgical environment is latex-free
C. Administer an antihistamine prophylactically
D. Use only vinyl gloves during the procedure
Correct Answer: B. Ensure the entire surgical environment is latex-free
Rationale: Patients with latex allergy are at risk for severe allergic reactions, including
anaphylaxis, when exposed to latex-containing products. The perioperative environment contains
numerous latex items (gloves, catheters, tubing, drapes), so a comprehensive latex-free
environment is essential. Scheduling as the last case (A) does not prevent exposure. Prophylactic
antihistamines (C) do not prevent anaphylaxis and are not a substitute for avoidance. Vinyl gloves
(D) are an alternative but do not address other latex-containing items in the environment.
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2026/2027 NEWEST EXAM 2 VERSIONS (VERSION A AND B)
COMPLETE 200 QUESTIONS WITH DETAILED VERIFIED
ANSWERS (100% CORRECT ANSWERS) /ALREADY GRADED A+
1|Page
,CNOR (CERTIFIED NURSE OPERATING ROOM) EXAM TEST BANK 2026/2027
2026/2027 Examination
Total Questions: 200
Instructions:
• Answer all questions.
• Select the single best answer.
• Each question has four answer choices: A, B, C, and D.
• Select only ONE answer for each question.
SECTION 1: PREOPERATIVE PATIENT ASSESSMENT AND DIAGNOSIS
Questions 1–25
Q1. During the preoperative assessment, a patient reports a family history of malignant
hyperthermia. Which action should the perioperative nurse prioritize?
A. Document the history and continue with standard anesthesia planning
B. Notify the anesthesia professional and ensure dantrolene sodium is immediately available
C. Ask the patient to sign a waiver acknowledging the increased risk
D. Schedule the patient for regional anesthesia instead of general anesthesia
Correct Answer: B. Notify the anesthesia professional and ensure dantrolene sodium is
immediately available
Rationale: A family history of malignant hyperthermia is a critical finding that significantly
increases the patient's risk during general anesthesia. The perioperative nurse must immediately
communicate this to the anesthesia professional and verify that dantrolene sodium, the specific
treatment for malignant hyperthermia crisis, is readily accessible. Simply documenting the history
(A) does not ensure patient safety. A waiver (C) does not mitigate clinical risk. While regional
anesthesia may be considered, the nurse cannot independently make that decision (D), and the
anesthesia professional must be involved in the plan.
Q2. A patient scheduled for elective surgery reports taking warfarin daily. Which laboratory
value is most critical for the nurse to verify before surgery?
A. Complete blood count
B. International Normalized Ratio (INR)
C. Serum potassium
D. Blood urea nitrogen
Correct Answer: B. International Normalized Ratio (INR)
2|Page
, Rationale: Warfarin is an anticoagulant that prolongs clotting time by inhibiting vitamin K-
dependent clotting factors. The INR specifically measures the extrinsic pathway of coagulation and is
the standard test for monitoring warfarin therapy. An elevated INR indicates increased bleeding risk
during surgery. While a complete blood count (A) assesses for anemia and infection, it does not
directly measure anticoagulation status. Serum potassium (C) and BUN (D) are relevant to overall
health but do not assess warfarin's primary effect.
Q3. The perioperative nurse is reviewing the surgical consent form with a patient who speaks
limited English. The patient appears confused about the procedure. What is the nurse's best action?
A. Have the patient sign the consent and proceed with surgery
B. Ask a family member who speaks English to explain the procedure
C. Request a qualified medical interpreter to facilitate informed consent
D. Postpone the surgery until the patient learns sufficient English
Correct Answer: C. Request a qualified medical interpreter to facilitate informed consent
Rationale: Informed consent requires that the patient understands the procedure, risks,
benefits, and alternatives. A language barrier prevents valid informed consent. Using a qualified
medical interpreter ensures accurate communication and protects patient rights. Having the patient
sign without understanding (A) invalidates consent. Family members (B) may not accurately convey
medical information and may filter or misinterpret details. Postponing surgery until the patient
learns English (D) is unnecessary and discriminatory when interpreter services are available.
Q4. During preoperative assessment, a patient is classified as ASA Physical Status IV. What does
this classification indicate?
A. A healthy patient with no systemic disease
B. A patient with mild systemic disease
C. A patient with severe systemic disease that is a constant threat to life
D. A declared brain-dead patient whose organs are being removed for donation
Correct Answer: C. A patient with severe systemic disease that is a constant threat to life
Rationale: The ASA Physical Status Classification System categorizes patients based on physical
health. ASA I (A) is a healthy patient. ASA II indicates mild systemic disease. ASA III indicates severe
systemic disease. ASA IV indicates severe systemic disease that is a constant threat to life. ASA V is a
moribund patient not expected to survive without the operation. ASA VI (D) is a declared brain-dead
patient. Understanding this classification helps the perioperative team anticipate anesthetic risk and
resource needs.
Q5. A patient scheduled for a total knee arthroplasty reports taking St. John's wort for
depression. Why is this finding significant for perioperative planning?
A. It may cause hypertension during anesthesia
B. It can increase the metabolism of many anesthetic agents
3|Page
, C. It decreases the risk of postoperative nausea and vomiting
D. It provides additional pain relief during surgery
Correct Answer: B. It can increase the metabolism of many anesthetic agents
Rationale: St. John's wort is a potent inducer of cytochrome P450 enzymes, particularly CYP3A4.
This can accelerate the metabolism of numerous medications, including anesthetic agents, opioids,
and other perioperative drugs, potentially leading to inadequate anesthesia or analgesia. It does not
typically cause hypertension during anesthesia (A). It does not protect against postoperative nausea
and vomiting (C). While it may have some analgesic properties, this is not the primary perioperative
concern (D).
Q6. The perioperative nurse is assessing an older adult patient scheduled for hip fracture repair.
Which physiological change of aging is most important to consider during preoperative assessment?
A. Increased cardiac output
B. Decreased renal function
C. Increased hepatic blood flow
D. Decreased sensitivity to pain
Correct Answer: B. Decreased renal function
Rationale: Aging is associated with a progressive decline in renal function, including decreased
glomerular filtration rate and renal blood flow. This affects drug clearance and elimination,
increasing the risk of drug toxicity and prolonged effects of anesthetic agents and other medications.
Older adults typically have decreased, not increased, cardiac output (A). Hepatic blood flow
decreases with age (C). Pain sensitivity generally remains intact or may be altered, but this is not the
most critical physiological consideration for medication management (D).
Q7. A patient with a known allergy to latex is scheduled for surgery. Which preoperative action is
essential?
A. Schedule the surgery as the last case of the day
B. Ensure the entire surgical environment is latex-free
C. Administer an antihistamine prophylactically
D. Use only vinyl gloves during the procedure
Correct Answer: B. Ensure the entire surgical environment is latex-free
Rationale: Patients with latex allergy are at risk for severe allergic reactions, including
anaphylaxis, when exposed to latex-containing products. The perioperative environment contains
numerous latex items (gloves, catheters, tubing, drapes), so a comprehensive latex-free
environment is essential. Scheduling as the last case (A) does not prevent exposure. Prophylactic
antihistamines (C) do not prevent anaphylaxis and are not a substitute for avoidance. Vinyl gloves
(D) are an alternative but do not address other latex-containing items in the environment.
4|Page
