,Surgical Technology Certification Advanced
Prep: Master Surgical Case Management &
Instrumentation Practice Questions
Subject: Surgical Technology Principles, Instrumentation, and Case
Management (AST 6th Edition)
Question 1: During a laparoscopic cholecystectomy, the surgeon identifies a structure that is
potentially the common bile duct but is uncertain. What is the most appropriate next step to
achieve intraoperative visualization and prevent injury?
A) Immediately convert to an open procedure to ensure full manual inspection.
B) Perform an intraoperative cholangiogram (IOC) to delineate the biliary anatomy.
C) Use blunt dissection to skeletonize the Calot’s triangle further.
D) Proceed with the cholecystectomy, as the risk of injury is minimal if the surgeon is
experienced.
Correct Answer: B) Perform an intraoperative cholangiogram (IOC) to delineate the biliary
anatomy.
Explanation: The intraoperative cholangiogram is the gold standard for mapping the biliary tree
when anatomy is obscure. Conversion to open (A) is an option but is usually reserved for when
the surgeon cannot safely proceed laparoscopically after imaging. Blunt dissection (C) in an
area of suspected ductal proximity increases the risk of iatrogenic injury.
Question 2: Which of the following best describes the principle of the "sterile field" regarding
back tables and Mayo stands?
A) The entire back table is sterile, but the Mayo stand is only sterile on the top surface.
B) Only the top of the table is considered sterile, and anything hanging below the level of the
table edge is contaminated.
C) The entire back table and Mayo stand are sterile regardless of what hangs over the edge.
D) The back table is sterile only if it is draped with a double-layered barrier.
Correct Answer: B) Only the top of the table is considered sterile, and anything hanging
below the level of the table edge is contaminated.
,Explanation: This is a fundamental principle of aseptic technique. The level of the table marks
the horizontal plane of sterility; any item falling below this plane is considered contaminated
because it is beyond the purview of the scrubbed person's line of sight and potentially contacts
unsterile equipment or clothing.
Question 3: When selecting an appropriate chemical indicator for steam sterilization, where
should it be placed within the instrument tray?
A) On the outside of the wrapper to ensure it was processed.
B) In the center of the tray, in the area least accessible to steam penetration (the "worst-case"
area).
C) Taped to the lid of the rigid container system.
D) Specifically on the heaviest instrument, such as an orthopaedic retractor.
Correct Answer: B) In the center of the tray, in the area least accessible to steam penetration
(the "worst-case" area).
Explanation: Internal chemical indicators must be placed in the area of the package most
difficult for the sterilizing agent to reach. This ensures that if the indicator shows a pass, the
entire load has been adequately penetrated.
Question 4: Which of the following is the most effective method for cleaning surgical
instruments that are heavily soiled with blood and bone debris?
A) Hand-scrubbing with a wire brush.
B) Ultrasonic cleaner to remove debris from box locks and serrations.
C) Soaking in high-level disinfectant for 24 hours.
D) Immediate placement in the steam autoclave without pre-cleaning.
Correct Answer: B) Ultrasonic cleaner to remove debris from box locks and serrations.
Explanation: Ultrasonic cleaners use cavitation to create microscopic bubbles that implode,
dislodging organic material from crevices and box locks that manual scrubbing cannot reach.
Hand-scrubbing is inefficient for deep crevices, and autoclaving (D) without pre-cleaning causes
blood/protein to "bake" onto the instruments.
Question 5: A patient is undergoing a total hip arthroplasty. During the procedure, the surgeon
requests a "cement" (polymethyl methacrylate). What is the primary safety concern for the
surgical technologist during the preparation of this substance?
, A) The cement is highly explosive in the presence of oxygen.
B) It releases toxic, volatile vapors that are irritating to the respiratory tract and eyes.
C) It adheres instantly to stainless steel, requiring immediate rinsing with water.
D) It must be heated to 100 degrees Celsius to be workable.
Correct Answer: B) It releases toxic, volatile vapors that are irritating to the respiratory
tract and eyes.
Explanation: Methyl methacrylate monomer is a volatile, pungent-smelling liquid. The vapors
are known to be irritating and potentially toxic to the surgical team, necessitating the use of
specialized mixing systems to minimize vapor release.
Question 6: Which of the following suture materials is a synthetic, absorbable multifilament that
is commonly used for ligation?
A) Plain Gut
B) Polyglactin 910 (Vicryl)
C) Polydioxanone (PDS)
D) Stainless Steel
Correct Answer: B) Polyglactin 910 (Vicryl)
Explanation: Polyglactin 910 is a synthetic, absorbable, braided (multifilament) suture. Plain gut
is natural (submucosa of sheep/beef intestine). PDS is a monofilament. Stainless steel is non-
absorbable.
Question 7: In the context of "time-out" procedures, what is the responsibility of the surgical
technologist?
A) The technologist verifies the patient's ID band only if the circulating nurse is absent.
B) The technologist must stop their activity and actively participate in the verification of the
correct patient, procedure, site, and implants.
C) The technologist is exempt from the time-out, as their role is focused on instrument
maintenance.
D) The technologist only verifies the surgical tray integrity.
Prep: Master Surgical Case Management &
Instrumentation Practice Questions
Subject: Surgical Technology Principles, Instrumentation, and Case
Management (AST 6th Edition)
Question 1: During a laparoscopic cholecystectomy, the surgeon identifies a structure that is
potentially the common bile duct but is uncertain. What is the most appropriate next step to
achieve intraoperative visualization and prevent injury?
A) Immediately convert to an open procedure to ensure full manual inspection.
B) Perform an intraoperative cholangiogram (IOC) to delineate the biliary anatomy.
C) Use blunt dissection to skeletonize the Calot’s triangle further.
D) Proceed with the cholecystectomy, as the risk of injury is minimal if the surgeon is
experienced.
Correct Answer: B) Perform an intraoperative cholangiogram (IOC) to delineate the biliary
anatomy.
Explanation: The intraoperative cholangiogram is the gold standard for mapping the biliary tree
when anatomy is obscure. Conversion to open (A) is an option but is usually reserved for when
the surgeon cannot safely proceed laparoscopically after imaging. Blunt dissection (C) in an
area of suspected ductal proximity increases the risk of iatrogenic injury.
Question 2: Which of the following best describes the principle of the "sterile field" regarding
back tables and Mayo stands?
A) The entire back table is sterile, but the Mayo stand is only sterile on the top surface.
B) Only the top of the table is considered sterile, and anything hanging below the level of the
table edge is contaminated.
C) The entire back table and Mayo stand are sterile regardless of what hangs over the edge.
D) The back table is sterile only if it is draped with a double-layered barrier.
Correct Answer: B) Only the top of the table is considered sterile, and anything hanging
below the level of the table edge is contaminated.
,Explanation: This is a fundamental principle of aseptic technique. The level of the table marks
the horizontal plane of sterility; any item falling below this plane is considered contaminated
because it is beyond the purview of the scrubbed person's line of sight and potentially contacts
unsterile equipment or clothing.
Question 3: When selecting an appropriate chemical indicator for steam sterilization, where
should it be placed within the instrument tray?
A) On the outside of the wrapper to ensure it was processed.
B) In the center of the tray, in the area least accessible to steam penetration (the "worst-case"
area).
C) Taped to the lid of the rigid container system.
D) Specifically on the heaviest instrument, such as an orthopaedic retractor.
Correct Answer: B) In the center of the tray, in the area least accessible to steam penetration
(the "worst-case" area).
Explanation: Internal chemical indicators must be placed in the area of the package most
difficult for the sterilizing agent to reach. This ensures that if the indicator shows a pass, the
entire load has been adequately penetrated.
Question 4: Which of the following is the most effective method for cleaning surgical
instruments that are heavily soiled with blood and bone debris?
A) Hand-scrubbing with a wire brush.
B) Ultrasonic cleaner to remove debris from box locks and serrations.
C) Soaking in high-level disinfectant for 24 hours.
D) Immediate placement in the steam autoclave without pre-cleaning.
Correct Answer: B) Ultrasonic cleaner to remove debris from box locks and serrations.
Explanation: Ultrasonic cleaners use cavitation to create microscopic bubbles that implode,
dislodging organic material from crevices and box locks that manual scrubbing cannot reach.
Hand-scrubbing is inefficient for deep crevices, and autoclaving (D) without pre-cleaning causes
blood/protein to "bake" onto the instruments.
Question 5: A patient is undergoing a total hip arthroplasty. During the procedure, the surgeon
requests a "cement" (polymethyl methacrylate). What is the primary safety concern for the
surgical technologist during the preparation of this substance?
, A) The cement is highly explosive in the presence of oxygen.
B) It releases toxic, volatile vapors that are irritating to the respiratory tract and eyes.
C) It adheres instantly to stainless steel, requiring immediate rinsing with water.
D) It must be heated to 100 degrees Celsius to be workable.
Correct Answer: B) It releases toxic, volatile vapors that are irritating to the respiratory
tract and eyes.
Explanation: Methyl methacrylate monomer is a volatile, pungent-smelling liquid. The vapors
are known to be irritating and potentially toxic to the surgical team, necessitating the use of
specialized mixing systems to minimize vapor release.
Question 6: Which of the following suture materials is a synthetic, absorbable multifilament that
is commonly used for ligation?
A) Plain Gut
B) Polyglactin 910 (Vicryl)
C) Polydioxanone (PDS)
D) Stainless Steel
Correct Answer: B) Polyglactin 910 (Vicryl)
Explanation: Polyglactin 910 is a synthetic, absorbable, braided (multifilament) suture. Plain gut
is natural (submucosa of sheep/beef intestine). PDS is a monofilament. Stainless steel is non-
absorbable.
Question 7: In the context of "time-out" procedures, what is the responsibility of the surgical
technologist?
A) The technologist verifies the patient's ID band only if the circulating nurse is absent.
B) The technologist must stop their activity and actively participate in the verification of the
correct patient, procedure, site, and implants.
C) The technologist is exempt from the time-out, as their role is focused on instrument
maintenance.
D) The technologist only verifies the surgical tray integrity.
