SA13 Medical Nursing Flashcards
What is an incision wound?
- Clean cut
- Caused by sharp object
- Glass, scalpel blade, etc
- Profuse bleeding, especially in deep/larger wounds
What is a laceration wound?
- Tearing of tissue
- Uneven edges
- Barbed wire, etc
- Less severe bleeding than incision
- Contaminated
What is an abrasion wound?
- Superficial wound
- Doesn’t penetrate full skin thickness
- Contamination with dirt and foreign material
What is a puncture wound?
- Small external wound
- Often with significant deeper damage
- Dog/cat bites
What is a contusion wound?
- Blunt blow
- Ruptured capillaries below surface
- Can have deeper injuries
What is an avulsion wound?
- Wound with skin flap
- Skin flap becomes necrotic
- Delays healing if not removed
What is a fracture?
- Break in bone
- Can be classed as open if wound present
What is a rupture wound?
- Injured organ
- Causes internal bleeding
- Life threatening
- Liver, spleen, etc
What is a haematoma?
- Blood filled pocket
- Aural, organ (liver, spleen)
What is a clean wound?
- Surgical wound
- Made under aseptic conditions
What is a clean contaminated wound?
- Surgical wound
- Made under aseptic conditions
- With mild contamination
What is aetiology?
Unknown cause
What is a contaminated wound?
- Fresh traumatic wound
- Surgical wound with major break in asepsis
What is a dirty wound?
- Traumatic wound over 6 hours old
- Any wound where ongoing infection is present prior to surgery
How can wounds be classified?
- Open/closed
- Clean/dirty
What is ischaemic?
Restriction in blood supply
What different degrees of damage are there in wounds?
- Resolution
- Regeneration
- Organisation
What is resolution in terms of wounds?
- No tissue destruction
- Very minor inflammatory phase
- Tissue returns to original state
What is regeneration in terms of wounds?
- Complete replacement of damaged tissue
- Connective tissue and blood supply must be intact
What is organisation in terms of wounds?
- Formation of scar tissue
- As unable to heal by regeneration
- Often results in loss of normal function
What are the stages of the healing process?
- Haemostasis
- Inflammatory
- Proliferative
- Remodelling/maturation
What is the haemostasis stage of wound healing?
Clots form to stop blood loss
What is the inflammatory stage of wound healing?
- Blood clot attracts neutrophils
- Clear up bacteria, necrotic tissue, foreign material
- Macrophages (monocytes) perform final debridement
- Exudate, swelling and redness seen
- 24-48 hr for clean surgical wound
What is the proliferative stage of healing?
- Fibroblasts lay new tissue
- Endothelial cells lay new blood vessels
- Epithelial cells migrate over wound to replace epidermis
- Granulation and wound contraction seen