CST Surgical Instrumentation & Equipment 4

Question 1

Which stapler is used to create an anastomosis between two hollow organs end-to-end?

Accepted Answer

Circular end-to-end anastomosis (EEA) stapler

Answer

The circular EEA stapler fires two concentric rows of staples and cuts a lumen between them, creating a secure end-to-end anastomosis of hollow structures.

Question 2

What is the correct action when a drill bit breaks during an orthopedic procedure?

Accepted Answer

Inform the surgeon immediately and retrieve all fragments

Answer

A broken drill bit is a retained foreign body risk; the ST must immediately alert the surgeon and all fragments must be retrieved and accounted for.

Question 3

Which instrument is specifically designed for blunt dissection of tissue planes?

Accepted Answer

Peanut (Kittner) dissector

Answer

A peanut (Kittner) dissector is a small gauze-tipped instrument loaded on a clamp and used to bluntly separate tissue planes without cutting.

Question 4

The harmonic scalpel uses which energy source to cut and coagulate tissue?

Accepted Answer

Ultrasonic vibration

Answer

The harmonic scalpel uses ultrasonic vibration (55,500 Hz) to simultaneously cut tissue and coagulate blood vessels with minimal thermal spread.

Question 5

What is the proper care for a flexible endoscope immediately after use?

Accepted Answer

Wipe the insertion tube and suction channels at the bedside, then send for high-level disinfection

Answer

Flexible endoscopes must be bedside-wiped and all channels flushed immediately after use, then processed with high-level disinfection because they cannot withstand steam sterilization.

(CST) Certified Surgical Technician Practice Test

(CST) Certified Surgical Technician Practice Test

CST Surgical Instrumentation & Equipment 4