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TL;DR

Study sterilization methods, aseptic technique principles, and sterile field maintenance. Maintaining sterility prevents surgical site infections and is a core competency.

By Valenke Exam Prep Team·Last updated 2026-06-03

Free Sterile Field & Draping Practice Questions

CST Certified Surgical Technologist (NBSTSA) · Intraoperative Procedures

This module covers Sterile Field & Draping as part of the Intraoperative Procedures section, testing your understanding of core concepts and their practical application.

ExamCST Certified Surgical Technologist (NBSTSA)
Pass Rate72%
Duration240 minutes
ModuleSterile Field & Draping

Why Sterile Field & Draping matters

Sterile Field & Draping is heavily weighted on the CST Certified Surgical Technologist (NBSTSA) because lapses in safety protocols directly threaten patient outcomes.

Sample Practice Questions (5)

1. When draping the patient for a laparotomy, sterile drapes should be placed:

  • From the non-sterile area toward the sterile area (far to near)
  • From the operative site outward (near to far), with the first drape placed closest to the incision site
  • All four drapes placed simultaneously by different team members
  • Starting with the drape farthest from the surgical team

2. During a total joint replacement, the circulating nurse opens a sterile implant tray to the field. The surgical technologist notices the internal chemical indicator strip has not changed color. What does this indicate and what should be done?

  • The indicator confirms sterility; proceed with using the implant
  • The sterilization conditions may not have been met; do NOT use the implant and notify the circulating nurse to obtain a replacement
  • The indicator is only for external use and has no bearing on the contents' sterility
  • Re-sterilize the implant tray using immediate-use steam sterilization (IUSS) and proceed

3. When donning a sterile gown, which area of the gown is considered sterile?

  • The entire gown from neckline to hem
  • The front of the gown from chest to waist level, and the sleeves from the cuff to 2 inches above the elbow
  • Only the sleeves and gloved hands
  • The front and back of the gown from shoulder to waist

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4. A non-scrubbed team member needs to deliver a sterile item to the back table. Which method is CORRECT?

  • Hand the item directly to the surgical technologist
  • Open the outer wrapper using sterile technique and present the contents or flip/drop them onto the sterile field without reaching over it
  • Place the wrapped item on the back table for the ST to unwrap later
  • Toss the item onto the sterile field from a distance of 3 feet

5. During a long surgical procedure, the surgical technologist notices a small hole in the fingertip of their right glove. No one else on the team has noticed. What is the MOST appropriate action?

  • Cover the hole with a sterile adhesive bandage and continue
  • Immediately step back from the sterile field, inform the team, and have the circulator assist with regloving using an open or assisted gloving technique
  • Wait until the next convenient break in the procedure to change gloves
  • Place a second glove (double glove) over the compromised glove without informing anyone

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Frequently Asked Questions

How many Sterile Field & Draping questions are on the CST Certified Surgical Technologist (NBSTSA)?
The Intraoperative Procedures section, which includes Sterile Field & Draping, typically represents a significant portion of the exam. Focus on understanding core concepts rather than memorizing exact question counts, as the exam uses adaptive testing.
What is the best way to study Sterile Field & Draping?
Use active recall and spaced repetition rather than passive reading. Practice with realistic exam questions, review explanations for both correct and incorrect answers, and focus on understanding the reasoning behind each concept.
What are common mistakes on Sterile Field & Draping exam questions?
The most common error is choosing an answer that sounds correct in general but violates a specific safety protocol. Always choose the most conservative safety-first option, and remember that hand hygiene is almost always part of the correct answer.