Surgical Assistant and Perioperative Care
Practice Exam questions and correct answers
– Updated 2026 (Graded A+) instant
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Subject: Surgical Assisting and Perioperative Care
Subtopic: Preoperative Patient Assessment and Universal Protocol
Question 1: During the preoperative "timeout" for a scheduled bilateral inguinal hernia repair,
the surgical team discovers that the surgeon intends to repair the left side, but the surgical
consent form and the preoperative site marking indicate the right side. What is the most
appropriate immediate action for the surgical assistant?
A) Proceed with the left-side repair as the surgeon has identified it as the correct pathology.
B) Verify the side with the patient’s family in the waiting area before making an incision.
C) Stop the procedure immediately and request that the surgeon and circulating nurse resolve the
discrepancy with the patient and medical records.
D) Proceed with the right-side repair as it matches the legal consent form, regardless of the
surgeon’s current plan.
Correct Answer: C - Stop the procedure immediately and request that the surgeon and
circulating nurse resolve the discrepancy with the patient and medical records.
Rationale: The Universal Protocol for preventing wrong-site, wrong-procedure, and wrong-
person surgery mandates a "timeout" immediately before starting a procedure. Any discrepancy
identified during the timeout must be resolved before the incision is made. Proceeding without
clarification (A and D) violates patient safety protocols. Relying on family members (B) is
insufficient when official medical documentation is contradictory; the primary source of
verification must be the patient (if conscious) or the original authenticated medical
record/consent.
Question 2: A patient is scheduled for a mastectomy and is found to have a permanent cardiac
pacemaker. The surgical assistant is preparing the operative field. Which of the following is the
primary safety concern regarding the use of electrosurgical units (ESU) in this patient?
A) The ESU may cause the pacemaker to switch to an asynchronous mode or inhibit pacing due
to electromagnetic interference.
,B) The ESU will inevitably drain the battery of the pacemaker, leading to immediate post-
operative failure.
C) The ESU current will be diverted through the pacemaker leads, potentially causing a
myocardial infarction.
D) The ESU ground pad placement is irrelevant as long as the pacemaker is shielded by a lead
apron.
Correct Answer: A - The ESU may cause the pacemaker to switch to an asynchronous
mode or inhibit pacing due to electromagnetic interference.
Rationale: Electrosurgical units create electromagnetic interference that can be interpreted by
the pacemaker as cardiac activity, potentially inhibiting the device's output. It can also cause the
device to revert to an asynchronous (fixed-rate) mode. While ESU use requires caution (e.g.,
keeping the grounding pad away from the device and using bipolar cautery when possible), the
primary concern is the interference with the device's sensing/pacing logic. Choice C is
anatomically incorrect regarding current flow, and D is a dangerous misconception regarding
safety.
Question 3: A patient scheduled for an elective cholecystectomy reveals they have been taking
aspirin 81mg daily. According to standard surgical guidelines, why must this be addressed prior
to surgery?
A) Aspirin causes permanent damage to the clotting factors produced by the liver.
B) Aspirin irreversibly inhibits cyclooxygenase-1 (COX-1), preventing platelet aggregation for
the lifespan of the platelet (7–10 days).
C) Aspirin significantly lowers the patient’s serum potassium levels, increasing the risk of
arrhythmias.
D) Aspirin interacts with the anesthesia induction agent, increasing the risk of malignant
hyperthermia.
Correct Answer: B - Aspirin irreversibly inhibits cyclooxygenase-1 (COX-1), preventing
platelet aggregation for the lifespan of the platelet (7–10 days).
Rationale: Aspirin’s antiplatelet effect is permanent for the life of the exposed platelets. Because
platelets have a lifespan of 7–10 days, the drug is typically withheld for 5–7 days before elective
surgery to allow for the production of new, functional platelets. Choice A is incorrect as aspirin
does not damage liver-produced factors. Choice C and D are not clinical effects associated with
aspirin therapy.
Question 4: When positioning a patient for a thyroidectomy, which of the following maneuvers
is most critical for providing adequate exposure of the anterior neck?
,A) Placing the patient in a modified Trendelenburg position.
B) Utilizing a shoulder roll or sandbag to facilitate hyperextension of the neck.
C) Applying a beanbag positioner to maintain the lateral decubitus position.
D) Placing the patient in a prone position with the head rotated 90 degrees.
Correct Answer: B - Utilizing a shoulder roll or sandbag to facilitate hyperextension of the
neck.
Rationale: Thyroidectomy requires optimal visualization of the anterior neck. Placing a shoulder
roll under the patient’s shoulders allows the head to fall back slightly, providing the necessary
hyperextension to expose the surgical site. Trendelenburg (A) is typically used for pelvic surgery,
a beanbag (C) is for lateral or prone stability, and a prone position (D) is contraindicated for
anterior neck surgery.
Question 5: A patient is undergoing a laparoscopic procedure. During the insufflation of the
abdomen with $CO_{2}$, the patient’s end-tidal $CO_{2}$ (Et$CO_{2}$) begins to rise, and
blood pressure increases. What is the most likely physiological cause?
A) Systemic absorption of the $CO_{2}$ gas through the peritoneum.
B) The patient is developing an anaphylactic reaction to the laparoscopic ports.
C) The anesthesia machine is failing to provide adequate oxygenation.
D) The patient has an undiagnosed case of malignant hyperthermia.
Correct Answer: A - Systemic absorption of the $CO_{2}$ gas through the peritoneum.
Rationale: During laparoscopy, $CO_{2}$ is absorbed through the highly vascularized
peritoneum, leading to hypercapnia (rising Et$CO_{2}$). This can trigger a sympathetic
nervous system response, resulting in increased blood pressure and heart rate. While the
anesthesiologist manages this via ventilation changes, the assistant must recognize that this is a
direct result of $CO_{2}$ absorption. Anaphylaxis (B) would typically manifest with hypotension
and bronchospasm, and MH (D) presents with rising temperature and rigidity, not just isolated
Et$CO_{2}$ increases.
Question 6: When preparing a sterile field, the surgical assistant accidentally brushes a sterile,
wrapped instrument against their non-sterile gown. What is the correct protocol?
A) If the instrument remains inside the outer wrapper, it is still sterile.
B) The instrument is considered contaminated and must be removed from the field and replaced.
, C) The instrument can be used if it is wiped with an alcohol swab.
D) The incident can be ignored as the gown is "clean" enough for the OR environment.
Correct Answer: B - The instrument is considered contaminated and must be removed
from the field and replaced.
Rationale: Aseptic technique requires that any sterile item contacting a non-sterile surface (the
gown, regardless of how "clean" it is) must be considered contaminated. There are no "degrees"
of sterility; it is binary. Using a contaminated instrument increases the risk of a surgical site
infection (SSI), which is a major safety violation.
Question 7: A surgical assistant is asked to assist with an intra-operative cholangiogram. Which
piece of equipment is essential for this procedure?
A) A portable C-arm fluoroscopy unit.
B) An ultrasound probe with a sterile cover.
C) A specialized robotic arm for retraction.
D) A high-powered surgical microscope.
Correct Answer: A - A portable C-arm fluoroscopy unit.
Rationale: An intra-operative cholangiogram (IOC) is a diagnostic test performed during
gallbladder surgery to visualize the biliary tree. It requires real-time radiographic imaging,
which is provided by the C-arm (a mobile fluoroscopy unit). Ultrasound (B) might be used to
check for stones, but it is not the primary tool for a cholangiogram. Microscopes (D) are used
for neuro/ENT surgery.
Question 8: Which of the following lab values is the most critical to monitor before an elective
surgery due to its immediate impact on blood clotting and the potential need for surgical delay?
A) Serum Glucose
B) International Normalized Ratio (INR)
C) Hemoglobin A1c
D) Serum Creatinine
Correct Answer: B - International Normalized Ratio (INR)
Rationale: The INR measures the extrinsic pathway of the coagulation cascade and is the
standard for monitoring patients on warfarin (Coumadin). An elevated INR (typically >1.5)
Practice Exam questions and correct answers
– Updated 2026 (Graded A+) instant
download pdf
Subject: Surgical Assisting and Perioperative Care
Subtopic: Preoperative Patient Assessment and Universal Protocol
Question 1: During the preoperative "timeout" for a scheduled bilateral inguinal hernia repair,
the surgical team discovers that the surgeon intends to repair the left side, but the surgical
consent form and the preoperative site marking indicate the right side. What is the most
appropriate immediate action for the surgical assistant?
A) Proceed with the left-side repair as the surgeon has identified it as the correct pathology.
B) Verify the side with the patient’s family in the waiting area before making an incision.
C) Stop the procedure immediately and request that the surgeon and circulating nurse resolve the
discrepancy with the patient and medical records.
D) Proceed with the right-side repair as it matches the legal consent form, regardless of the
surgeon’s current plan.
Correct Answer: C - Stop the procedure immediately and request that the surgeon and
circulating nurse resolve the discrepancy with the patient and medical records.
Rationale: The Universal Protocol for preventing wrong-site, wrong-procedure, and wrong-
person surgery mandates a "timeout" immediately before starting a procedure. Any discrepancy
identified during the timeout must be resolved before the incision is made. Proceeding without
clarification (A and D) violates patient safety protocols. Relying on family members (B) is
insufficient when official medical documentation is contradictory; the primary source of
verification must be the patient (if conscious) or the original authenticated medical
record/consent.
Question 2: A patient is scheduled for a mastectomy and is found to have a permanent cardiac
pacemaker. The surgical assistant is preparing the operative field. Which of the following is the
primary safety concern regarding the use of electrosurgical units (ESU) in this patient?
A) The ESU may cause the pacemaker to switch to an asynchronous mode or inhibit pacing due
to electromagnetic interference.
,B) The ESU will inevitably drain the battery of the pacemaker, leading to immediate post-
operative failure.
C) The ESU current will be diverted through the pacemaker leads, potentially causing a
myocardial infarction.
D) The ESU ground pad placement is irrelevant as long as the pacemaker is shielded by a lead
apron.
Correct Answer: A - The ESU may cause the pacemaker to switch to an asynchronous
mode or inhibit pacing due to electromagnetic interference.
Rationale: Electrosurgical units create electromagnetic interference that can be interpreted by
the pacemaker as cardiac activity, potentially inhibiting the device's output. It can also cause the
device to revert to an asynchronous (fixed-rate) mode. While ESU use requires caution (e.g.,
keeping the grounding pad away from the device and using bipolar cautery when possible), the
primary concern is the interference with the device's sensing/pacing logic. Choice C is
anatomically incorrect regarding current flow, and D is a dangerous misconception regarding
safety.
Question 3: A patient scheduled for an elective cholecystectomy reveals they have been taking
aspirin 81mg daily. According to standard surgical guidelines, why must this be addressed prior
to surgery?
A) Aspirin causes permanent damage to the clotting factors produced by the liver.
B) Aspirin irreversibly inhibits cyclooxygenase-1 (COX-1), preventing platelet aggregation for
the lifespan of the platelet (7–10 days).
C) Aspirin significantly lowers the patient’s serum potassium levels, increasing the risk of
arrhythmias.
D) Aspirin interacts with the anesthesia induction agent, increasing the risk of malignant
hyperthermia.
Correct Answer: B - Aspirin irreversibly inhibits cyclooxygenase-1 (COX-1), preventing
platelet aggregation for the lifespan of the platelet (7–10 days).
Rationale: Aspirin’s antiplatelet effect is permanent for the life of the exposed platelets. Because
platelets have a lifespan of 7–10 days, the drug is typically withheld for 5–7 days before elective
surgery to allow for the production of new, functional platelets. Choice A is incorrect as aspirin
does not damage liver-produced factors. Choice C and D are not clinical effects associated with
aspirin therapy.
Question 4: When positioning a patient for a thyroidectomy, which of the following maneuvers
is most critical for providing adequate exposure of the anterior neck?
,A) Placing the patient in a modified Trendelenburg position.
B) Utilizing a shoulder roll or sandbag to facilitate hyperextension of the neck.
C) Applying a beanbag positioner to maintain the lateral decubitus position.
D) Placing the patient in a prone position with the head rotated 90 degrees.
Correct Answer: B - Utilizing a shoulder roll or sandbag to facilitate hyperextension of the
neck.
Rationale: Thyroidectomy requires optimal visualization of the anterior neck. Placing a shoulder
roll under the patient’s shoulders allows the head to fall back slightly, providing the necessary
hyperextension to expose the surgical site. Trendelenburg (A) is typically used for pelvic surgery,
a beanbag (C) is for lateral or prone stability, and a prone position (D) is contraindicated for
anterior neck surgery.
Question 5: A patient is undergoing a laparoscopic procedure. During the insufflation of the
abdomen with $CO_{2}$, the patient’s end-tidal $CO_{2}$ (Et$CO_{2}$) begins to rise, and
blood pressure increases. What is the most likely physiological cause?
A) Systemic absorption of the $CO_{2}$ gas through the peritoneum.
B) The patient is developing an anaphylactic reaction to the laparoscopic ports.
C) The anesthesia machine is failing to provide adequate oxygenation.
D) The patient has an undiagnosed case of malignant hyperthermia.
Correct Answer: A - Systemic absorption of the $CO_{2}$ gas through the peritoneum.
Rationale: During laparoscopy, $CO_{2}$ is absorbed through the highly vascularized
peritoneum, leading to hypercapnia (rising Et$CO_{2}$). This can trigger a sympathetic
nervous system response, resulting in increased blood pressure and heart rate. While the
anesthesiologist manages this via ventilation changes, the assistant must recognize that this is a
direct result of $CO_{2}$ absorption. Anaphylaxis (B) would typically manifest with hypotension
and bronchospasm, and MH (D) presents with rising temperature and rigidity, not just isolated
Et$CO_{2}$ increases.
Question 6: When preparing a sterile field, the surgical assistant accidentally brushes a sterile,
wrapped instrument against their non-sterile gown. What is the correct protocol?
A) If the instrument remains inside the outer wrapper, it is still sterile.
B) The instrument is considered contaminated and must be removed from the field and replaced.
, C) The instrument can be used if it is wiped with an alcohol swab.
D) The incident can be ignored as the gown is "clean" enough for the OR environment.
Correct Answer: B - The instrument is considered contaminated and must be removed
from the field and replaced.
Rationale: Aseptic technique requires that any sterile item contacting a non-sterile surface (the
gown, regardless of how "clean" it is) must be considered contaminated. There are no "degrees"
of sterility; it is binary. Using a contaminated instrument increases the risk of a surgical site
infection (SSI), which is a major safety violation.
Question 7: A surgical assistant is asked to assist with an intra-operative cholangiogram. Which
piece of equipment is essential for this procedure?
A) A portable C-arm fluoroscopy unit.
B) An ultrasound probe with a sterile cover.
C) A specialized robotic arm for retraction.
D) A high-powered surgical microscope.
Correct Answer: A - A portable C-arm fluoroscopy unit.
Rationale: An intra-operative cholangiogram (IOC) is a diagnostic test performed during
gallbladder surgery to visualize the biliary tree. It requires real-time radiographic imaging,
which is provided by the C-arm (a mobile fluoroscopy unit). Ultrasound (B) might be used to
check for stones, but it is not the primary tool for a cholangiogram. Microscopes (D) are used
for neuro/ENT surgery.
Question 8: Which of the following lab values is the most critical to monitor before an elective
surgery due to its immediate impact on blood clotting and the potential need for surgical delay?
A) Serum Glucose
B) International Normalized Ratio (INR)
C) Hemoglobin A1c
D) Serum Creatinine
Correct Answer: B - International Normalized Ratio (INR)
Rationale: The INR measures the extrinsic pathway of the coagulation cascade and is the
standard for monitoring patients on warfarin (Coumadin). An elevated INR (typically >1.5)
