CSFA CSFA Surgical Equipment and Technology

Question 1

Before activating a pneumatic tourniquet, the surgical first assistant should confirm which critical parameter has been set correctly?

Accepted Answer

Inflation pressure appropriate for the patient's systolic blood pressure and limb occlusion pressure

Answer

Tourniquet pressure is typically set 50–100 mmHg above systolic blood pressure or based on limb occlusion pressure to ensure complete arterial occlusion without excessive tissue damage.

Question 2

Which laparoscopic energy device uses ultrasonic vibration to simultaneously cut and coagulate tissue?

Accepted Answer

Harmonic scalpel (ultrasonic dissector)

Answer

The Harmonic scalpel vibrates at 55,500 Hz, generating frictional heat that denatures proteins, sealing vessels while simultaneously cutting tissue.

Question 3

What is the maximum recommended safe intra-abdominal insufflation pressure during routine laparoscopic surgery in adults?

Accepted Answer

15 mmHg

Answer

Standard insufflation pressure for adult laparoscopy is 12–15 mmHg; pressures above 15 mmHg impair venous return and diaphragmatic excursion.

Question 4

A surgical robot's 'EndoWrist' instruments are designed to provide what advantage over straight laparoscopic instruments?

Accepted Answer

Seven degrees of freedom with 360° articulation, mimicking open surgical hand movement

Answer

EndoWrist technology replicates the wrist's natural motion with multiple axes of movement, enabling complex dissection and suturing in confined spaces.

Question 5

Which gas is most commonly used for laparoscopic insufflation, and why?

Accepted Answer

Carbon dioxide — rapidly absorbed, non-combustible, and inexpensive

Answer

CO2 is preferred because it is non-flammable (safe with electrosurgery), rapidly absorbed by tissues if a gas embolism occurs, and cost-effective.

CSFA - Certified Surgical First Assistant Practice Test

CSFA - Certified Surgical First Assistant Practice Test

CSFA CSFA Surgical Equipment and Technology