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Phase 1 week 1 - the skin > Wounds > Flashcards

Flashcards in Wounds Deck (19):
1

Name the 4 types of wounds

Erosion, ulceration, partial thickness and full thickness

2

Describe erosion wounds

Loss of epidermis

3

Describe ulceration wounds

Deep into epidermis

4

Describe partial thickness

Epidermis and part of dermis

5

Describe full thickenes

All of epidermis and deep into dermis

6

What is the mechanism of wound healing

To prevent infection, dehydration and bleeding

7

What are the 3 stages of wound healing?

1. Inflammation
2. Proliferation
3. Tissue remodelling

8

Describe the inflammation stage

Platelets appear and initiate haemostasis and the healing cascade by releasing growth factors. This trigger vasodilation, which increases the permeability of blood vessels. White blood cells also work to clear bacteria and microorganisms from the wound. The migration of cells to this area causes redness and swelling

9

Describe phase 1 of tissue proliferation

Keratinocytes move to the wound edge and become flatter. They then migrate by 2 methods: Train method or leap frog method. As soon as the wound is covered in a single layer of keratinocytes, the keratinocytes being to proliferate

10

Describe phase 2 of tissue proliferation

Endothelial cells migrate and proliferate. Fibroblasts multiply and produce collage, which is deposited haphazardly to form granulation tissue. Inflammation sign dissapear, and fibroblasts contract, pulling the edges of the wounds together

11

Describe tissue remodelling

Granulation tissue becomes scar tissue, and collagen is cross- linked to form a scar

12

What is rubor

redness

13

What is tumour

Swelling

14

What is calor

Heat

15

What is dolar

pain

16

What is functio laesa

Loss of function

17

Name some factors that effect wound healing

1. Age of patient
2. Size of wound
3. Wounds blood supply
4. Patients medication
5. Health of patient

18

What is the function of growth factors

Help cells to communicate with eachother

19

Give 2 examples of growth factors

Platelet derived GF and epidermal GF