Free Certified Surgical Technologist Practice Test
1. Which of the following refers to the process of isolating the surgical site from the rest of the body?
- Skin preparation
- Surgical draping
- Aseptic technique
- Patient positioning
2. Which of the following skin preparation products provide a rapid decrease in the level of microorganisms?
- Alcohol and iodine
- Alcohol and chlorhexidine
- Iodine and chlorhexidine
- Chlorhexidine and peroxide
3. Which of the following is the normal value for red blood cells?
- 4.3 to 5.9 x 106 cells/mm3
- 5.2 to 7.8 x 106 cells/mm3
- 8.1 to 9.8 x 106 cells/mm3
- 9 to 10.7 x 106 cells/mm3
4. Which of the following refers to the flow of air from inside the operating room outward?
- Negative pressure
- Direct pressure
- Laminar air flow
- Reverse air flow
5. Which of the following are the most common sizes of scalpel blades?
- #10, #13, and #15
- #10, #11, and #15
- #11, #13, and #15
- #10, #11, and #13
- B: Surgical draping is the process in which the surgical site is isolated from the rest of the body. This process is used to protect the surgical site from possible sources of infection. The drapes are used to serve as a barrier between the surgical site and all surrounding tissues.
- A: Alcohol and iodine provide similar qualities in rapid decrease in the level of microorganisms. Alcohol is usually used at a concentration of 70%. Although iodine is as effective as alcohol for skin preparation, it should be removed in a timely fashion as it can cause skin irritation for the patient.
- A: The normal value for red blood cells is 4.3 to 5.9 x 106 cells/mm3 . Abnormal values of red blood cells can be indicative of anemia, hypovolemia, or chronic occult hemorrhage as seen with conditions such as gastric ulcers.
- C:Laminar air flow provides unidirectional, positive pressure air flow, which maintains the flow of air from inside the operating room outward. This flow of air is beneficial because it helps to filter out microbes that may compromise the sterile surgical area. Laminar air flow is maintained best when the operating room doors are kept closed.
- B: The three most common sizes of scalpel blades are #10, #11, and #15. Scalpel blades are produced in a large variety of shapes and sizes depending on the function in which it is to be used. The #11 blade is particularly useful for "stab" wounds, whereas a #10 blade is used for longer, linear incisions.
Certified Surgical Technologist Introduction
Last Updated: 09/21/2017