Laser

Question 1

What is an insult/injury?

Answer 1

An injury or trauma that causes an inconsistency in the tissue
Any changes on skin (Normal to abnormal)

Question 2

What are three factors that can lead to abnormal scarring?

Answer 2

1. Infection
2. Tissue Ischemia
3. Picking

Question 3

What are the five types of wound?

Answer 3

1. Contured Wound
2. Puncture Wound
3. Laceration
4. Incision
5. Burn

Question 4

Confused Wound ?

Answer 4

Contused wound: An injury to tissue below the skin

where skin remains unbroken.

Example: Bruise, broken bone.

Question 5

Puncture Wound ?

Answer 5

Puncture Wound: Injury caused by a sharp or pointed

object, usually collapsed inward,

deep tissue wound.

Example: Stab wound, gunshot wound

Question 6

Laceration ?

Answer 6

Laceration: Unclean wound with jagged edges, Can be of

varying depths

Example: Cut with metal or can, skinned knee

Question 7

Incision ?

Answer 7

Incision: Clean cut caused by a sharp instrument.

Example: Surgical wound

Question 8

Burn ?

Answer 8

Burn: Tissue injury due to excessive heat or acids.

Example: Thermal injury, chemical burn

Question 9

What are the three types of abnormal scarring?

Answer 9

1. Atrophic Scars
2. Keloid Scars
3. Hypertrophic Scars

Question 10

Atrophic Scars?

Answer 10

Atrophic Scars:

flat, small, round and generally inverted scars

(acne scars and chicken pox)

Question 11

Keloid Scars?

Answer 11

Keloid Scars:

scar formation in which tissue response is excessive in

relation to normal tissue repair

(outside the area of injury)

Most common with darker skin types, overproduction of

collagen

Question 12

Hypertrophic Scars?

Answer 12

Hypertrophic Scars:

Overly developed scar tissue that rises above skin level

and is often overfed by an abundance of capillaries.

Question 13

List and explain the three phases of wound healing.

Answer 13

1. Inflammatory
2. Proliferative Phase
3. Remodeling Phase

Question 14

Inflammatory Phase?

Answer 14

Unflammatoey phase:
Occurs within first few hours of injury; area is red, warm, swollen and patient feels pain.
Blood cells inactivate bacteria and tissue cells activate growth factors such as fibroblasts
Its lasts up to 4 days.

• Blood flow and fluids increase at the site
• Blood and tissue cells secrete substances to create inflammation that help overcome
pathogens
•
• Bleeding is controlled (platelets - blood clot)

Question 15

Proliferative Phase?

Answer 15

Proliferative Phase:
5 days after the initial trauma
Phase of wound healing during which replacement of protective epithelial tissue occurs over the old wound site, scab and scar tissue formed.
This phase lasts from 1 to 6 weeks.

• Type I collagen fibers created by
fibroblasts are being formed across the
wound

Re-epitheliazation occurs over the old wound site, scab and scar tissue formed to induce healing underneath over the next 6 weeks

Question 16

Remodeling Phase?

Answer 16

Remodeling Phase: Type III collagen formation goes at a furious pace and becomes organized - strength increases.
In certain wounds this could take up to 2 years

Question 17

What are leukocytes?

Answer 17

White blood cells without granules involved in immune

response. They help the body fight infection and

other diseases. Types of leukocytes are granulocytes,

lymphocytes and Monocytes.

Question 18

What is Tissue Ischemia?

Answer 18

Localized restriction of blood flow usually caused by an

obstruction of normal circulation.

Can caused by infection, smoking, poor health.

Question 19

Explain the difference between a partial thickness wound and a full thickness wound.

Answer 19

Partial thickness wound: Epidermis and shallow dermal injury, quicker healing time, Heals
without scarring. Wounds are created from laser and light therapies.

Full thickness wound: penetrates to a specific depth in the papillary dermis or upper
reticular dermis, Slower healing time, Scars develop
Wound shrinks by contraction and re epithelialization occurs across the wound Surgical
incision

Question 20

Partial Thickness wound?

Answer 20

Partial thickness wound: Epidermis and shallow dermal injury, quicker healing time, Heals
without scarring. Wounds are created from laser and light therapies.

Question 21

Full Thickness Wound?

Answer 21

Full thickness wound: penetrates to a specific depth in

the papillary dermis or upper reticular dermis, Slower

healing time, Scars develop

Wound shrinks by contraction and re epithelialization

occurs across the wound Surgical incision

Question 22

Explain what normal scarring looks like.

Answer 22

The result of uncomplicated healing, decolorized and

flat, nearly indistinguishable from the rest of the skin

Epithelialization, the growth of new skin over a wound,

occurs in partial thickness wounds.

Question 23

What is an example of an Atrophic scar?

Answer 23

flat, small, round and generally inverted scars

acne scars and chicken pox

Question 24

What is desquamation?

Answer 24

The shedding or peeling of the outer layers of the

epidermis.

For example: When the rash of measles fades,

desquamation occurs.

Skin peeling typically follws healing od a first degree

burn or sunburn.

Question 25

Infection?

Answer 25

Occurs when bacteria (staphylococcus or streptococcus) in the wound
overwhelm the body’s defense system; cause the wound to heal more slowly.

Question 26

Picking?

Answer 26

Picking: disrupts the healing process and causes the cellular repair to begin again and again
chances of scarring are higher when patient picks at a wound and results in longer healing
times.