CIS Surgical Instrument Identification Questions and Answers 2 — Questions and Answers
Question 1: What distinguishes a Kelly clamp from a mosquito clamp?
- Kelly clamps are curved, mosquito clamps are straight
- Kelly clamps have serrations on the distal half only while mosquito clamps have full-length serrations, and Kelly clamps are larger (Correct answer)
- They are identical
- Mosquito clamps are for blood vessels, Kelly clamps are not
Correct answer: Kelly clamps have serrations on the distal half only while mosquito clamps have full-length serrations, and Kelly clamps are larger
Kelly clamps have transverse serrations on only the distal half of the jaw and are larger, while mosquito clamps have full-length serrations and are smaller.
Kelly clamps have horizontal serrations on only the outer half of the jaw, are typically 5.5-6.5 inches, and handle larger vessels. Mosquito clamps have full-length serrations, are 3.5-5 inches, and handle fine vessels. Both come in curved and straight versions.
Question 2: What type of surgical instrument is a Bovie?
- A type of scissors
- An electrosurgical pencil or unit for cutting and coagulating tissue with electrical current (Correct answer)
- A bone-cutting forcep
- A suture needle type
Correct answer: An electrosurgical pencil or unit for cutting and coagulating tissue with electrical current
A Bovie is an electrosurgical unit or pencil that uses high-frequency electrical current to cut tissue and coagulate bleeding vessels.
Named after inventor William T. Bovie, the system includes a generator, active electrode (pencil), and return electrode (grounding pad). Operating modes include cut, coagulation, and blend. Modern units include bipolar capability.
Question 3: What is the primary function of a Weitlaner retractor?
- To retract deep abdominal organs
- To provide self-retaining wound retraction using sharp or blunt prongs with a ratchet (Correct answer)
- To hold suture needles
- To cut through bone
Correct answer: To provide self-retaining wound retraction using sharp or blunt prongs with a ratchet
The Weitlaner is a self-retaining retractor with a ratchet mechanism and sharp or blunt prongs, used for superficial and intermediate-depth procedures.
The Weitlaner has two arms with opposing prongs (2x3 or 3x4 configurations) connected by a ratchet. Available with sharp prongs for skin/fascia or blunt for delicate tissue. Sizes range from 4 to 8 inches.
Question 4: How can you identify a DeBakey forcep from other tissue forceps?
- It has teeth like rat-tooth forceps
- It has distinctive atraumatic parallel serrations in a 1x2 configuration at the tips (Correct answer)
- It is always longer than others
- It has a locking ratchet
Correct answer: It has distinctive atraumatic parallel serrations in a 1x2 configuration at the tips
DeBakey forceps feature fine parallel serrations in a 1x2 configuration designed by Dr. Michael DeBakey for handling vascular tissue without damage.
The DeBakey pattern has one row on one jaw interdigitating with two rows on the opposing jaw, creating an atraumatic grip. Originally designed for vascular surgery, DeBakey forceps are now used across virtually all specialties for atraumatic tissue handling.
Question 5: What is the purpose of a trocar in surgical instrumentation?
- To suction blood
- To create a puncture access point through the body wall using a sharp obturator and cannula (Correct answer)
- To measure wound depth
- To hold tissue during suturing
Correct answer: To create a puncture access point through the body wall using a sharp obturator and cannula
A trocar consists of a sharp obturator that punctures through tissue and a cannula that remains as a working port for instrument access, commonly used in laparoscopic surgery.
Trocars come in bladed, optical, and blunt types. Standard sizes are 5mm, 10mm, 12mm, and 15mm. Reusable trocars require meticulous disassembly, cleaning of valve mechanisms, and sharpness testing of bladed obturators.
Question 6: What distinguishes Metzenbaum scissors from Mayo scissors?
- Metzenbaum scissors are always straight
- Metzenbaum have longer shanks relative to blade length for delicate dissection, while Mayo have heavier blades for tough tissue (Correct answer)
- Mayo scissors are only for cardiac surgery
- They are the same in different sizes
Correct answer: Metzenbaum have longer shanks relative to blade length for delicate dissection, while Mayo have heavier blades for tough tissue
Metzenbaum scissors have a high shank-to-blade ratio for precise dissection, while Mayo scissors have proportionally longer, heavier blades for cutting tough tissue.
Metzenbaum scissors have long shanks with short, light blades for delicate tissue dissection in deep spaces. Mayo scissors have balanced proportions with heavier blades for cutting fascia, sutures, and dressings. Metzenbaum tips are more delicate and need careful inspection.
CIS Surgical Instrument Identification Questions and Answers 2
What distinguishes a Kelly clamp from a mosquito clamp?