CIS - Certified Instrument Specialist Instrument Inspection and Testing 1

Question 1

Which method is used to verify that the tips of tissue forceps are properly aligned?

Accepted Answer

Holding the forceps up to a light source and checking for any gap between the tips when closed

Answer

Submerging the forceps in saline solution and checking for bubbles

Answer

Applying pressure to the handles and measuring deflection with a gauge

Answer

Checking the manufacturer's color code on the handle

Question 2

What is the correct way to inspect the tungsten carbide inserts on needle holders?

Accepted Answer

Visually examine the jaws for pitting, cracks, or missing carbide particles

Answer

Test the insert hardness with a file

Answer

Measure the insert thickness with a micrometer

Answer

Soak the jaws in acid solution and look for discoloration

Question 3

A surgical instrument that produces a high-pitched squeak when operated most likely indicates:

Accepted Answer

Metal-on-metal friction due to insufficient lubrication

Answer

Proper function with adequate lubrication

Answer

Ultrasonic cleaning residue trapped in the joint

Answer

A non-functional ratchet mechanism

Question 4

When inspecting serrations on a surgical instrument, the technician should look for:

Accepted Answer

Uniform depth and pattern without bent, broken, or missing teeth

Answer

A shiny, polished appearance indicating wear

Answer

Serrations that are wider at the tip than at the base

Answer

A brown oxide coating that protects the serration edges

Question 5

What does a white or chalky residue found on instruments after sterilization most commonly indicate?

Accepted Answer

Mineral deposits from hard water used during processing

Answer

Protein deposits from inadequate decontamination

Answer

Residue from enzymatic detergent not fully rinsed

Answer

Normal oxidation from steam sterilization

Question 6

Which test is used to evaluate the integrity of the surface finish on stainless steel surgical instruments?

Accepted Answer

Dip the instrument in a copper sulfate solution for 6 minutes and inspect for copper deposits

Answer

Expose the instrument to UV light and look for fluorescence

Answer

Submerge the instrument in distilled water and check for rust within 24 hours

Answer

Apply a magnetic strip to the instrument surface and measure adhesion force