CRCST Surgical Instrumentation 1 — Questions and Answers
Question 1: What is the primary function of a hemostat in surgery?
- To retract tissue away from the operative field
- To clamp blood vessels and control bleeding (Correct answer)
- To cut sutures at the end of a procedure
- To hold tissue edges together during closure
Correct answer: To clamp blood vessels and control bleeding
Hemostats are clamping instruments specifically designed to compress blood vessels and control hemorrhage during surgical procedures.
Question 2: Which scissors are heavier and primarily used for cutting tough tissue such as fascia?
- Metzenbaum scissors
- Iris scissors
- Mayo scissors (Correct answer)
- Tenotomy scissors
Correct answer: Mayo scissors
Mayo scissors are heavier and more robust, designed for cutting tough tissue like fascia, while Metzenbaum scissors are lighter and used for delicate tissue dissection.
Question 3: What is the distinguishing feature of a self-retaining retractor compared to a hand-held retractor?
- It is used only by the surgeon, not the assistant
- It maintains tissue retraction without requiring manual support (Correct answer)
- It can only retract superficial tissue layers
- It is designed exclusively for laparoscopic procedures
Correct answer: It maintains tissue retraction without requiring manual support
Self-retaining retractors have a locking or ratchet mechanism that holds them open without requiring an assistant to hold them, freeing the surgical team's hands.
Question 4: The term 'atraumatic' when describing surgical forceps means the instrument is designed to:
- Withstand trauma during sterilization
- Grip tissue without causing damage or puncture wounds (Correct answer)
- Handle only traumatized or necrotic tissue
- Resist staining from blood and body fluids
Correct answer: Grip tissue without causing damage or puncture wounds
Atraumatic forceps have smooth or specially contoured tips that grip tissue gently without causing tearing, crushing, or puncture wounds.
Question 5: What is the purpose of the ratchet mechanism on locking clamps such as hemostats?
- To provide better ergonomic grip for the surgeon's fingers
- To lock the clamp at varying degrees of closure without manual effort (Correct answer)
- To indicate the instrument has passed sterilization verification
- To attach the instrument securely to the sterile field drape
Correct answer: To lock the clamp at varying degrees of closure without manual effort
The ratchet allows the clamp to be locked at different positions of closure, maintaining clamping pressure on a vessel or tissue without requiring the surgeon to hold it continuously.
Question 6: The 'box lock' on a hinged surgical instrument refers to:
- The protective storage case for a delicate instrument set
- The pivot point where the two shanks of a hinged instrument intersect (Correct answer)
- The ratchet teeth that lock the instrument closed
- The finger ring handles used to operate the instrument
Correct answer: The pivot point where the two shanks of a hinged instrument intersect
The box lock is the pivot joint where the two halves of hinged instruments (scissors, clamps) intersect and articulate; its integrity is critical to proper instrument function.
Question 7: Which of the following instruments features ring handles that allow the user to insert fingers for control?
- Malleable retractor
- Elevator
- Hemostat (Correct answer)
- Tissue probe
Correct answer: Hemostat
Hemostats, scissors, and needle holders feature ring handles designed to accommodate the surgeon's thumb and finger(s), providing precise control during use.
CRCST Surgical Instrumentation 1
What is the primary function of a hemostat in surgery?