Deck 5: Lasers

Question 1

Which of the following is not a potential hazard of laser use?

A) fire
B) electrical shock
C) damage to unintended tissue
D) coagulation of intended blood vessels

Answer 1

D

Question 2

Which agency regulates the use of medical lasers in the workplace?

A) AST
B) AORN
C) ANSI
D) AMA

Answer 2

C

Question 3

One of the main uses for an excimer laser is:

A) gynecological surgery
B) orthopedic surgery
C) LASIK surgery
D) neurosurgery

Answer 3

C

Question 4

Who is responsible for updating and enforcing laser safety policies?

A) surgeon
B) physician assistant
C) laser safety officer
D) hospital CEO

Question 5

Scattering of a laser beam as it hits a surface (e.g.,tissue)can cause:

A) an increase in intensity
B) a narrowing of the beam
C) a decrease in intensity
D) the beam to spread over a smaller area

Question 6

The energy source for the laser is known as a medium.All of the following can be forms of media except:

A) gas
B) solid
C) semiconductor
D) steam

Question 7

The most commonly used medical laser is:

A) carbon dioxide
B) argon
C) ruby
D) holmium

Question 8

What does the acronym LASER stand for?

Question 9

Fire safety precautions for laser use include all of the following except:

A) using flame-retardant drapes
B) using nonreflective instruments
C) surrounding the surgical site with wet towels
D) using shiny, steel instruments

Question 10

All of the following statements are true about laser protective eyewear except:

A) Laser eyewear should be posted on the outside of the door of the room in case someone needs to enter the room.
B) Each eyewear is specific for a certain type of beam; therefore, you must check to make sure that you have the eyewear specific to the laser you are using.
C) Patients do not need to have their eyes protected because they are behind the drape.
D) Regular eyeglasses or goggles are not considered protective eyewear.

Question 11

The laser machine does not come on.You have checked that the machine is plugged in,the power switch is in the "on" position,the key is in the ignition,and the ignition is in the "on" position.What could be the likely problem?

A) a hospital-wide power outage
B) the dummy switch in the back is missing
C) faulty fiber
D) The fiber needs to be recut.

Question 12

Which type of laser has a beam that is not absorbed by clear tissue,making it useful for retinal surgery?

A) carbon dioxide
B) argon
C) holmium
D) ruby

Question 13

An example of a solid laser medium is:

A) argon
B) holmium
C) carbon dioxide
D) krypton

Question 14

In which of the following components contain the medium and the mirrors of the laser?

A) cooling system
B) delivery system
C) laser head
D) excitation source

Question 15

Which of the following lasers does not require an aiming beam?

A) carbon dioxide
B) holmium
C) argon
D) Nd:YAG

Question 16

All surfaces in the room must be:

A) reflective
B) nonreflective
C) sterile
D) nonsterile

Question 17

During the procedure,when the laser in not in use,it should be placed in _________ mode.

A) standby
B) ready
C) coagulating
D) cutting

Question 18

The laser foot pedal should only be operated by the:

A) assistant
B) scrub
C) circulator
D) surgeon holding the handpiece

Question 19

All of the following factors affect how deep the laser beam penetrates except:

A) duration of tissue exposure
B) power
C) wavelength
D) tissue color

Question 20

All of the following are characteristics of laser light except:

A) monochromatic
B) coherent
C) polychromatic
D) collimated

Question 21

Jewelry made of _______________________ should not be worn by personnel in the room or entering the room.

Question 22

The holmium laser has a beam outside of the visible range; therefore,an ____________________ __________________________ is necessary.

Question 23

"The beam alters or disrupts the tissue in some way" is the definition of ____________________.

Question 24

The "dummy switch" is located on the front of the laser machine.

Question 25

_________________ is when the beam is transmitted through tissue without thermally affecting it.

Question 26

The circulator places an open bottle of saline on top of the laser machine.Is this acceptable practice? Why?

Question 27

Name the four types of laser media.

Question 28

The argon laser produces a visible ________________________ color beam.

Question 29

The ____________________ laser creates less heat than other types and is less damaging to surrounding tissue.

Question 30

You are scrubbed in on a procedure that requires the use of a laser.The surgeon moves the foot pedal in your direction and says,"Step on this when I tell you to." What is your response?

Question 31

"The peaks and troughs of the light wave are all the same" is the definition of ____________________.

Question 32

To help prevent fire,surround the surgical site with ____________________ towels.

Question 33

____________________ tissue is the most vulnerable of all tissue to inadvertent exposure to laser light.

Question 34

Why is it important for staff to wear a laser mask instead of a standard surgical mask during laser procedures?

Question 35

The laser fiber is part of the _________________ system of the laser.

Question 36

The laser should be placed in _______________________ mode when not in use.

Question 37

____________________ ____________________ is the most commonly used type of laser in surgery.

Question 38

It is recommended to have _______________________-type fire extinguishers in the room while lasers are in use.

Question 39

The KTP laser can be used to treat _________________ _______________ stains

Question 40

The laser head is also known as the ______________ ______________.

Question 41

When storing the laser,the key should be left in the machine,so it does not get lost.

Question 42

The carbon dioxide laser beam is not absorbed by clear tissue,making it useful for retinal surgery.

Question 43

The excitation source is also known as the delivery system.

Question 44

Allow all prep solutions to dry completely before using the laser.

Question 45

Water or saline must be available on the surgical field.

Question 46

Smoke evacuators should be used to suction and filter the plume that is produced.

Question 47

Proper eyewear needs to be hanging inside the door for use by those who enter the room for any reason.

Question 48

The holmium laser is versatile as it can cut,ablate,coagulate,and contour tissues of all types.

Question 49

All doorways leading into the room where a laser is in use must be marked with a warning sign.