NBSTSA-CST MCQs
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Certified Surgical Technologist 2026
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You are preparing for a surgical procedure and must ensure that all electrical equipment is functioning properly. Which of the following checks is most crucial for preventing electrical hazards?
Inspecting the equipment for visible damage only
Ensuring all equipment is plugged in correctly and grounding is intact
Testing equipment only when there are reported issues
Ignoring manufacturer instructions for setup
Answer: B
Explanation: Ensuring all equipment is plugged in correctly and that grounding is intact is crucial for preventing electrical hazards and ensuring safe operation.
When performing the surgical scrub, what specific area often requires additional attention to detail to ensure thorough cleaning?
Under the nails
The wrists
The back of the hands
The palms of the hands
Answer: A
Explanation: Under the nails often requires additional attention during the surgical scrub as it can harbor bacteria and contaminants that need to be removed.
In the context of robotic-assisted surgery, which of the following advantages does this technique offer compared to traditional laparoscopic methods?
Enhanced dexterity and precision
Increased risk of complications
Longer operative times
Higher costs
Answer: A
Explanation: Robotic-assisted surgery offers enhanced dexterity and precision due to the articulated instruments and 3D visualization, which can improve surgical outcomes compared to traditional laparoscopic methods.
What should the surgical technologist do if they notice that a patient is positioned in a way that could lead to pressure ulcers during a lengthy procedure?
Wait until the end of the procedure to make adjustments
Inform the anesthesiologist of the concern
Adjust the patient's position immediately and safely
Document the concern in the surgical notes
Answer: C
Explanation: Adjusting the patient's position immediately is crucial to prevent the development of pressure ulcers, which can lead to additional complications.
In preparation for a laparoscopic procedure, which of the following interventions is essential for maintaining a sterile environment during instrument setup?
All instruments should be placed in a stack for easy access.
Instruments should be set up prior to the patient's arrival.
All non-sterile team members should be excluded from the room.
The scrubbed surgical technologist should avoid touching any non-sterile items.
Answer: D
Explanation: A scrubbed surgical technologist must avoid touching non-sterile items to maintain the sterile field and prevent contamination during the procedure.
During the removal of surgical drapes post-operation, which of the following techniques is recommended to minimize the risk of contamination?
Pulling the drapes off quickly in one motion
Folding the drapes inward towards the patient
Removing the drapes from the head of the bed first
Allowing the surgical team to assist in a coordinated manner
Answer: D
Explanation: Allowing the surgical team to assist in a coordinated manner ensures that drapes are removed methodically, reducing the risk of contamination and maintaining a sterile environment.
When classifying surgical wounds, which of the following best describes a wound that is deliberately created under sterile conditions but involves the entry of a hollow organ into the surgical field?
Clean wound
Clean-contaminated wound
Contaminated wound
Infected wound
Answer: B
Explanation: A clean-contaminated wound is created under sterile conditions but involves entry into a hollow organ, increasing the risk of contamination.
In a postoperative discussion, the surgical team addresses the need for improved communication regarding medication administration. What is the most effective strategy to enhance this communication?
Establishing a standardized medication checklist
Relying on verbal communication alone
Limiting discussion to only the anesthesia provider
Ignoring past communication failures
Answer: A
Explanation: A standardized checklist improves clarity and ensures all team members are aware of the medications administered during the procedure.
After assembling the sterile instruments for a procedure, the surgical technologist notices that one of the instruments is not functioning properly. What should be done next?
Ignore the issue and proceed with the surgery
Inform the surgeon and prepare to replace it with a new instrument
Attempt to fix the instrument during the procedure
Wait until the procedure is over to report the issue
Answer: B
Explanation: The surgical technologist should inform the surgeon and prepare to replace the non-functioning instrument, ensuring that the surgical procedure can proceed safely and effectively.
In the event of a sudden drop in the patient???s blood pressure during surgery, which action should the surgical technologist prioritize to assist the surgical team effectively?
Apply a tourniquet to the limb
Initiate cardiopulmonary resuscitation (CPR)
Ensure the patient is in a supine position
Notify the anesthesia provider immediately
Answer: D
Explanation: A sudden drop in blood pressure can indicate a critical situation. The surgical technologist should notify the anesthesia provider immediately, as they can assess the need for interventions such as fluid resuscitation or medication adjustments.
When evaluating the effectiveness of sterilization methods, which of the following indicators provides the most reliable confirmation that an item has been adequately sterilized?
Chemical indicator tape
Visual inspection of the item
Physical monitoring of sterilizer parameters
Biological indicator
Answer: D
Explanation: Biological indicators provide the most reliable confirmation of sterilization efficacy by demonstrating that viable microorganisms have been killed during the process.
During a bilateral oophorectomy, which anatomical structure must be carefully dissected to avoid hemorrhage?
Ovarian artery
Ureter
Round ligament
Fallopian tube
Answer: A
Explanation: The ovarian artery supplies blood to the ovaries and must be meticulously ligated to prevent significant hemorrhage during oophorectomy.
A surgical technologist is tasked with setting up a bovie pad for an
electrosurgical procedure. Which of the following is the most critical consideration to ensure patient safety?
Place the pad on an area with excessive hair
Ensure the pad is connected to the electrosurgical unit
Apply the pad to an area close to the surgical site
Make sure the pad is placed on the patient's arm
Answer: B
Explanation: Ensuring that the bovie pad is properly connected to the electrosurgical unit is critical for effective and safe operation. Incorrect placement can lead to burns or ineffective coagulation.
In preparation for a surgical procedure, a surgical technologist is tasked with calculating the appropriate dosage of a medication based on a ratio of 1:500,000. If the surgeon orders 10 mL of this medication, how many milligrams does this represent?
0.02 mg
0.1 mg
20 mg
2 mg
Answer: D
Explanation: A 1:500,000 ratio means there is 1 mg in 500 mL. Therefore, in 10 mL, there would be (10 mL ?? 1 mg) / 500 mL = 0.02 mg, which is incorrect. The correct calculation should yield 2 mg for 10 mL.
When preparing to initiate suction during a procedure, what is the most important aspect the surgical technologist must confirm about the suction apparatus?
That it is turned off until needed
That the suction canister is properly connected and secured
That it has an adequate supply of sterile fluid
That it is located within easy reach of the surgeon
Answer: B
Explanation: Confirming that the suction canister is properly connected and secured is crucial to ensure the suction apparatus functions correctly when needed, minimizing delays during surgery.
As part of the pre-operative checklist, what is the most important aspect to verify regarding the operating room's suction system?
That the suction canister is full
That the suction pressure is set to a high level
That the suction is located near the surgical table
That the suction tubing is free of kinks and obstructions
Answer: D
Explanation: Ensuring that the suction tubing is free of kinks and obstructions is critical to guarantee effective suctioning during the surgical procedure.
When preparing to assist with suturing, what key aspect must be communicated to the surgeon regarding the suture material being used?
The color of the suture
The expiration date of the suture
The tensile strength of the suture material
The brand of the suture
Answer: C
Explanation: Communicating the tensile strength of the suture material is crucial as it informs the surgeon about the suitability of the suture for the specific tissue being closed.
When a medication dosage is calculated based on BSA and the patient has a BSA of 1.5 m?? with a dosage of 100 mg/m??, what is the total amount of medication the patient should receive?
150 mg
200 mg
130 mg
120 mg
Answer: A
Explanation: The total dosage is determined by multiplying the BSA by the dosage per square meter: 1.5 m?? ?? 100 mg/m?? = 150 mg.
Which of the following actions is considered inappropriate when disposing of contaminated sharps after a surgical procedure?
Using a two-handed technique to dispose of needles
Placing sharps in a puncture-resistant container
Ensuring the container is clearly labeled and accessible
Securing the lid of the sharps container tightly
Answer: A
Explanation: A two-handed technique increases the risk of needle-stick injuries; a one-handed technique should always be used to enhance safety during disposal.
Which of the following statements about the use of a Bovie pad during electrosurgery is most accurate?
It can be placed on any part of the body without consequence.
Its placement is irrelevant as long as the active electrode is used correctly.
It should be applied after the incision is made.
It must be placed in proximity to the surgical site for effective grounding.
Answer: D
Explanation: The Bovie pad must be placed in proximity to the surgical site to ensure effective grounding and minimize the risk of burns or electrical injuries during electrosurgery.
When preparing to irrigate a surgical site, which of the following solutions should be avoided, and why?
Normal saline; it is safe and effective
Sterile water; it can cause hemolysis of red blood cells
Lactated Ringer???s; it is isotonic and safe
Dextrose solution; it provides nutrients
Answer: B
Explanation: Sterile water should be avoided for irrigation because it can cause hemolysis of red blood cells, leading to complications in the surgical site.
In a case where a surgical team is preparing for a procedure involving a contaminated field, which infection control procedure is essential to uphold
aseptic technique?
Use of sterile saline for irrigation
Application of a sterile drape over the site
Utilization of non-sterile gloves
Frequent changing of the surgical gown
Answer: B
Explanation: A sterile drape is crucial in maintaining an aseptic field to prevent contamination from the surrounding environment, particularly in contaminated cases.
During a surgical procedure, a patient suddenly becomes unresponsive. What is the first step you should take to ensure the safety of the patient and the effectiveness of the team response?
Assume it is a temporary issue and continue with the procedure
Check the patient???s vital signs and alert the surgical team
Leave the room to find additional help
Wait for the anesthesiologist to respond
Answer: B
Explanation: Checking the patient???s vital signs and alerting the surgical team immediately is critical for ensuring prompt intervention and maintaining patient safety.
In the context of surgical preparation, when utilizing antiseptic solutions for skin preparation, which of the following statements is most accurate regarding the use of chlorhexidine gluconate?
It should be applied in a circular motion from the incision site outward.
It is contraindicated for use in patients with latex allergies.
It is effective against both gram-positive and gram-negative bacteria.
It requires a 3-minute drying time before draping.
Answer: C
Explanation: Chlorhexidine gluconate is a broad-spectrum antimicrobial agent effective against a variety of pathogens, making it a preferred choice for surgical site preparation.
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