CST CERTIFICATION EXAM 2026 ACTUAL EXAM COMPLETE 200
QUESTIONS WITH DETAILED VERIFIED ANSWERS (100%
CORRECT ANSWERS) /ALREADY GRADED A+
1|Page
,CST CERTIFICATION EXAM 2026
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.
PART 1 — Q1–Q50
SECTION 1: PERIOPERATIVE CARE — PREOPERATIVE PREPARATION
Questions 1–25
Q1. A surgical technologist is preparing the operating room for a procedure scheduled at 0800.
The room temperature has been maintained at 68°F (20°C) overnight. What is the primary rationale
for adjusting the temperature to the recommended range before the patient arrives?
A. To enhance the comfort of the surgical team during the procedure
B. To reduce the risk of surgical site infection by inhibiting bacterial growth
C. To prevent patient hypothermia and maintain normothermia
D. To improve the efficiency of the anesthesia delivery system
Correct Answer: C. To prevent patient hypothermia and maintain normothermia
Rationale: Operating room temperature is adjusted to 68–75°F (20–24°C) primarily to help
maintain patient normothermia. Surgical patients are at risk for hypothermia due to anesthesia-
induced vasodilation, exposure of body cavities, and cool IV fluids. While team comfort and infection
control are considerations, the primary patient safety rationale is thermoregulation. Bacterial
growth is not significantly affected by OR temperatures in this range.
Q2. A surgical technologist is reviewing a surgeon's preference card for an upcoming
laparoscopic cholecystectomy. The card specifies a 30-degree laparoscope. What is the primary
advantage of an angled laparoscope over a 0-degree scope in this procedure?
A. It provides a wider field of view for initial trocar insertion
B. It allows visualization of structures at an angle without repositioning the camera
C. It reduces the risk of thermal injury to the bile duct
D. It eliminates the need for a second assistant during the procedure
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, Correct Answer: B. It allows visualization of structures at an angle without repositioning the
camera
Rationale: Angled laparoscopes (30° or 45°) allow the surgeon to look around corners and
visualize structures from different perspectives by rotating the scope, without changing the camera's
position. This is particularly useful in the triangle of Calot where critical structures (cystic duct, cystic
artery) must be clearly identified. A 0° scope provides only a straight-ahead view.
Q3. A patient scheduled for a total hip arthroplasty has a documented allergy to chlorhexidine.
Which preoperative skin preparation solution is most appropriate for this patient?
A. Chlorhexidine gluconate 2% with isopropyl alcohol
B. Povidone-iodine 7.5% scrub followed by 10% paint
C. Hydrogen peroxide 3% solution
D. Benzalkonium chloride 0.13% solution
Correct Answer: B. Povidone-iodine 7.5% scrub followed by 10% paint
Rationale: For patients with chlorhexidine allergy, povidone-iodine is the alternative skin
antiseptic of choice. The scrub-and-paint technique provides both mechanical cleansing and
sustained antimicrobial activity. Hydrogen peroxide is not an approved surgical skin prep, and
benzalkonium chloride is rarely used for surgical skin preparation due to limited residual activity.
Q4. During preoperative preparation, the surgical technologist notices that the informed consent
form lists "arthroscopic knee surgery" but the surgeon has scheduled an "open meniscectomy."
What is the most appropriate initial action?
A. Proceed with opening supplies for the open procedure as scheduled
B. Notify the circulating nurse and surgeon immediately before proceeding
C. Ask the patient to sign a corrected consent form in the preoperative area
D. Document the discrepancy and continue with routine preparation
Correct Answer: B. Notify the circulating nurse and surgeon immediately before proceeding
Rationale: Any discrepancy between the informed consent and the scheduled procedure must
be resolved before proceeding. The surgical technologist should notify the circulating nurse and
surgeon immediately. Proceeding without clarification could result in performing a procedure for
which the patient did not provide informed consent, creating serious legal and ethical violations.
Q5. A surgical technologist is preparing to open sterile supplies for a procedure. The package of a
critical instrument has a chemical indicator tape that has changed color, but the expiration date is
tomorrow. What is the appropriate action?
A. Consider the package sterile and use it before expiration
B. Reject the package because the indicator indicates contamination
C. Verify the indicator color change against the manufacturer's specifications and check for package
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, integrity
D. Open the package and inspect the instrument visually before use
Correct Answer: C. Verify the indicator color change against the manufacturer's specifications
and check for package integrity
Rationale: External chemical indicators confirm exposure to the sterilization process, not sterility
itself. The technologist should verify that the color change matches the manufacturer's specifications
and inspect the package for integrity (no tears, punctures, or moisture). If both criteria are met and
the expiration date has not passed, the package can be considered sterile.
Q6. A surgical technologist is performing a surgical hand scrub using a traditional antimicrobial
soap. According to AORN guidelines, what is the minimum recommended scrub time for the initial
scrub of the day?
A. 1 to 2 minutes
B. 3 to 5 minutes
C. 6 to 8 minutes
D. 10 minutes
Correct Answer: B. 3 to 5 minutes
Rationale: AORN guidelines recommend a 3- to 5-minute surgical hand scrub for the initial scrub
of the day when using a traditional antimicrobial agent. This duration sufficiently reduces both
transient and resident flora without causing excessive skin damage. Subsequent scrubs between
cases may be shorter (2–3 minutes) if the hands remain clean.
Q7. A surgical technologist is donning a sterile gown and gloves using the closed-gloving
technique. Which of the following describes the correct sequence?
A. Don the gown, then insert hands into gloves laid on the sterile field
B. Don the gown, then insert hands into the gown cuffs and pull gloves over the cuffs
C. Don the gown, then insert hands through the gown cuffs while keeping hands inside the cuffs to
pull gloves on
D. Don gloves first, then the gown, using the gloves to pull the gown over them
Correct Answer: C. Don the gown, then insert hands through the gown cuffs while keeping hands
inside the cuffs to pull gloves on
Rationale: In closed gloving, the hands remain inside the gown cuffs. The technologist picks up
the glove with the opposite gown cuff, positions it over the cuff, and pulls it on while keeping the
bare hand covered by the gown. This technique prevents skin contact with the outside of the gloves
and is preferred when donning a sterile gown.
Q8. A surgical technologist is preparing a back table and Mayo stand for an open abdominal
procedure. Which of the following is the correct order for draping the Mayo stand?
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QUESTIONS WITH DETAILED VERIFIED ANSWERS (100%
CORRECT ANSWERS) /ALREADY GRADED A+
1|Page
,CST CERTIFICATION EXAM 2026
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.
PART 1 — Q1–Q50
SECTION 1: PERIOPERATIVE CARE — PREOPERATIVE PREPARATION
Questions 1–25
Q1. A surgical technologist is preparing the operating room for a procedure scheduled at 0800.
The room temperature has been maintained at 68°F (20°C) overnight. What is the primary rationale
for adjusting the temperature to the recommended range before the patient arrives?
A. To enhance the comfort of the surgical team during the procedure
B. To reduce the risk of surgical site infection by inhibiting bacterial growth
C. To prevent patient hypothermia and maintain normothermia
D. To improve the efficiency of the anesthesia delivery system
Correct Answer: C. To prevent patient hypothermia and maintain normothermia
Rationale: Operating room temperature is adjusted to 68–75°F (20–24°C) primarily to help
maintain patient normothermia. Surgical patients are at risk for hypothermia due to anesthesia-
induced vasodilation, exposure of body cavities, and cool IV fluids. While team comfort and infection
control are considerations, the primary patient safety rationale is thermoregulation. Bacterial
growth is not significantly affected by OR temperatures in this range.
Q2. A surgical technologist is reviewing a surgeon's preference card for an upcoming
laparoscopic cholecystectomy. The card specifies a 30-degree laparoscope. What is the primary
advantage of an angled laparoscope over a 0-degree scope in this procedure?
A. It provides a wider field of view for initial trocar insertion
B. It allows visualization of structures at an angle without repositioning the camera
C. It reduces the risk of thermal injury to the bile duct
D. It eliminates the need for a second assistant during the procedure
2|Page
, Correct Answer: B. It allows visualization of structures at an angle without repositioning the
camera
Rationale: Angled laparoscopes (30° or 45°) allow the surgeon to look around corners and
visualize structures from different perspectives by rotating the scope, without changing the camera's
position. This is particularly useful in the triangle of Calot where critical structures (cystic duct, cystic
artery) must be clearly identified. A 0° scope provides only a straight-ahead view.
Q3. A patient scheduled for a total hip arthroplasty has a documented allergy to chlorhexidine.
Which preoperative skin preparation solution is most appropriate for this patient?
A. Chlorhexidine gluconate 2% with isopropyl alcohol
B. Povidone-iodine 7.5% scrub followed by 10% paint
C. Hydrogen peroxide 3% solution
D. Benzalkonium chloride 0.13% solution
Correct Answer: B. Povidone-iodine 7.5% scrub followed by 10% paint
Rationale: For patients with chlorhexidine allergy, povidone-iodine is the alternative skin
antiseptic of choice. The scrub-and-paint technique provides both mechanical cleansing and
sustained antimicrobial activity. Hydrogen peroxide is not an approved surgical skin prep, and
benzalkonium chloride is rarely used for surgical skin preparation due to limited residual activity.
Q4. During preoperative preparation, the surgical technologist notices that the informed consent
form lists "arthroscopic knee surgery" but the surgeon has scheduled an "open meniscectomy."
What is the most appropriate initial action?
A. Proceed with opening supplies for the open procedure as scheduled
B. Notify the circulating nurse and surgeon immediately before proceeding
C. Ask the patient to sign a corrected consent form in the preoperative area
D. Document the discrepancy and continue with routine preparation
Correct Answer: B. Notify the circulating nurse and surgeon immediately before proceeding
Rationale: Any discrepancy between the informed consent and the scheduled procedure must
be resolved before proceeding. The surgical technologist should notify the circulating nurse and
surgeon immediately. Proceeding without clarification could result in performing a procedure for
which the patient did not provide informed consent, creating serious legal and ethical violations.
Q5. A surgical technologist is preparing to open sterile supplies for a procedure. The package of a
critical instrument has a chemical indicator tape that has changed color, but the expiration date is
tomorrow. What is the appropriate action?
A. Consider the package sterile and use it before expiration
B. Reject the package because the indicator indicates contamination
C. Verify the indicator color change against the manufacturer's specifications and check for package
3|Page
, integrity
D. Open the package and inspect the instrument visually before use
Correct Answer: C. Verify the indicator color change against the manufacturer's specifications
and check for package integrity
Rationale: External chemical indicators confirm exposure to the sterilization process, not sterility
itself. The technologist should verify that the color change matches the manufacturer's specifications
and inspect the package for integrity (no tears, punctures, or moisture). If both criteria are met and
the expiration date has not passed, the package can be considered sterile.
Q6. A surgical technologist is performing a surgical hand scrub using a traditional antimicrobial
soap. According to AORN guidelines, what is the minimum recommended scrub time for the initial
scrub of the day?
A. 1 to 2 minutes
B. 3 to 5 minutes
C. 6 to 8 minutes
D. 10 minutes
Correct Answer: B. 3 to 5 minutes
Rationale: AORN guidelines recommend a 3- to 5-minute surgical hand scrub for the initial scrub
of the day when using a traditional antimicrobial agent. This duration sufficiently reduces both
transient and resident flora without causing excessive skin damage. Subsequent scrubs between
cases may be shorter (2–3 minutes) if the hands remain clean.
Q7. A surgical technologist is donning a sterile gown and gloves using the closed-gloving
technique. Which of the following describes the correct sequence?
A. Don the gown, then insert hands into gloves laid on the sterile field
B. Don the gown, then insert hands into the gown cuffs and pull gloves over the cuffs
C. Don the gown, then insert hands through the gown cuffs while keeping hands inside the cuffs to
pull gloves on
D. Don gloves first, then the gown, using the gloves to pull the gown over them
Correct Answer: C. Don the gown, then insert hands through the gown cuffs while keeping hands
inside the cuffs to pull gloves on
Rationale: In closed gloving, the hands remain inside the gown cuffs. The technologist picks up
the glove with the opposite gown cuff, positions it over the cuff, and pulls it on while keeping the
bare hand covered by the gown. This technique prevents skin contact with the outside of the gloves
and is preferred when donning a sterile gown.
Q8. A surgical technologist is preparing a back table and Mayo stand for an open abdominal
procedure. Which of the following is the correct order for draping the Mayo stand?
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