AORN PERIOP 101 PRACTICE EXAM
TEST BANK QUESTIONS AND ANSWERS
WITH VERIFIED SOLUTIONS 2026/2027
UPDATE. JUST RELEASED
1. Which of the following is the most important factor in preventing the transmission of
microorganisms in the operating room?
A. Effective environmental cleaning
B. Wearing a surgical mask
C. Proper hand hygiene
D. Using sterile gloves
Answer: C
Conceptual Explanation: Hand hygiene is consistently recognized by health organizations
like AORN and CDC as the single most important practice to reduce the transmission of
infectious agents.
2. According to AORN guidelines, when should a surgical ‘Time Out’ be performed?
A. Before the patient enters the operating room
B. Immediately before the start of the procedure
C. Immediately after the induction of anesthesia
,D. After the first surgical incision
Answer: B
Conceptual Explanation: The Time Out must be performed immediately before starting
the procedure, which means before the incision is made, to verify the correct patient, site,
and procedure.
3. Which clinical sign is often the first indicator of Malignant Hyperthermia (MH) during
surgery?
A. Increase in end-tidal CO2
B. Muscle rigidity in the jaw
C. Rapid rise in core body temperature
D. Tachycardia
Answer: A
Conceptual Explanation: An unexplained increase in end-tidal carbon dioxide (ETCO2) is
typically the earliest and most sensitive indicator of an MH crisis.
4. When placing a patient in the lithotomy position, which of the following nerves is at the
greatest risk for injury due to compression against the stirrups?
A. Sciatic nerve
B. Saphenous nerve
C. Common peroneal nerve
, D. Femoral nerve
Answer: C
Conceptual Explanation: The common peroneal nerve is susceptible to injury if the lateral
aspect of the knee is compressed against the stirrup support.
5. A surgical wound that results from a procedure where the respiratory, alimentary, or
genitourinary tract is entered under controlled conditions is classified as:
A. Class I: Clean
B. Class III: Contaminated
C. Class II: Clean-Contaminated
D. Class IV: Dirty-Infected
Answer: C
Conceptual Explanation: Class II wounds involve entering a tract (respiratory, GI, GU)
under controlled conditions without unusual contamination.
6. What is the recommended maximum weight for a surgical instrument tray to ensure
proper sterilization and safety for staff?
A. 15 pounds
B. 20 pounds
C. 30 pounds
D. 25 pounds
TEST BANK QUESTIONS AND ANSWERS
WITH VERIFIED SOLUTIONS 2026/2027
UPDATE. JUST RELEASED
1. Which of the following is the most important factor in preventing the transmission of
microorganisms in the operating room?
A. Effective environmental cleaning
B. Wearing a surgical mask
C. Proper hand hygiene
D. Using sterile gloves
Answer: C
Conceptual Explanation: Hand hygiene is consistently recognized by health organizations
like AORN and CDC as the single most important practice to reduce the transmission of
infectious agents.
2. According to AORN guidelines, when should a surgical ‘Time Out’ be performed?
A. Before the patient enters the operating room
B. Immediately before the start of the procedure
C. Immediately after the induction of anesthesia
,D. After the first surgical incision
Answer: B
Conceptual Explanation: The Time Out must be performed immediately before starting
the procedure, which means before the incision is made, to verify the correct patient, site,
and procedure.
3. Which clinical sign is often the first indicator of Malignant Hyperthermia (MH) during
surgery?
A. Increase in end-tidal CO2
B. Muscle rigidity in the jaw
C. Rapid rise in core body temperature
D. Tachycardia
Answer: A
Conceptual Explanation: An unexplained increase in end-tidal carbon dioxide (ETCO2) is
typically the earliest and most sensitive indicator of an MH crisis.
4. When placing a patient in the lithotomy position, which of the following nerves is at the
greatest risk for injury due to compression against the stirrups?
A. Sciatic nerve
B. Saphenous nerve
C. Common peroneal nerve
, D. Femoral nerve
Answer: C
Conceptual Explanation: The common peroneal nerve is susceptible to injury if the lateral
aspect of the knee is compressed against the stirrup support.
5. A surgical wound that results from a procedure where the respiratory, alimentary, or
genitourinary tract is entered under controlled conditions is classified as:
A. Class I: Clean
B. Class III: Contaminated
C. Class II: Clean-Contaminated
D. Class IV: Dirty-Infected
Answer: C
Conceptual Explanation: Class II wounds involve entering a tract (respiratory, GI, GU)
under controlled conditions without unusual contamination.
6. What is the recommended maximum weight for a surgical instrument tray to ensure
proper sterilization and safety for staff?
A. 15 pounds
B. 20 pounds
C. 30 pounds
D. 25 pounds
