LECTURE 1&2 (Wound, Tapes and Staples) Flashcards
What can wounds be generally classified as?
Acute or Chronic wounds
What is an Acute wound?
Any surgical wound that heals by primary intention or any traumatic or surgical wound that heals by secondary intention
[expected to progress through the phases of normal healing, resulting in closure of the wound]
What is a Chronic wound?
A wound that fails to progress healing or respond to treatment over the normal expected healing time frame (4 weeks) and becomes stuck in the inflammatory phase
What is the pathologic inflammation in a chronic wound caused by?
Postponed, incomplete or uncoordinated healing process
What is wound healing delayed by?
- Medications
- Poor nutrition
- Co-morbidities
- Inappropriate dressing selection
What are the different types of healing?
- Primary intention
- Delayed primary intention
- Secondary intention
Describe Primary Intention
- Wound edges are held together by sutures, staples, tapes or tissue glue
- Minimal tissue loss and wounds heal with minimal scarring
What are most clean surgical wounds and recent traumatic injuries managed by?
Primary Closure
Describe Delayed Primary Intention
When the wound is infected or requires more thorough intensive cleaning/debridement prior to primary closure 3-7 days later
What is used for traumatic wounds or contaminated surgical wounds?
Delayed Primary Intention
What is Secondary Intention?
Spontaneous wound healing that occurs through a process of granulation, contraction and epithelisation and results in scar formation
What method is used fir pressure injuries, ulcers and dehisced wounds?
Secondary Intention
What are the two phases of Wound healing?
1) Haemostasis
2) Tissue Repair & Regeneration
What is Haemostasis?
The rapid response to physical injury and is necessary to control bleeding which involves
1) Vasoconstriction
2) Platelet response
3) Biochemical response
Describe the three phases of Tissue Repair & Regeneration
1) INFLAMMATION PHASE (0-4 days) = activates vasodilation leading to increased blood flow causing heat, redness, pain, swelling and loss of function
2) RECONSTRUCTION PHASE (2-24 days) = body makes new vessels covering the surface of wound -> reconstruction & epithelisation -> wound becomes smaller as it heals
3) MATURATION PHASE (24 days-1 year) = scar tissue is formed
Which stages in Tissue repair & regeneration are proliferative and regenerative?
RECONSTRUCTION PHASE = PROLIFERATIVE
MATURATION PHASE = REGENERATIVE
What should be checked in wound assessment?
- Type of wound (acute/chronic)
- Aetiology (surgical, laceration, ulcer, burn, traumatic, pressure injury)
- Location & Surrounding skin
- Tissue Loss
- Clinical appearance of the wound bed and stage of healing
- Wound edge
What can the degree of tissue loss be classified into?
- Superficial wound (dermis)
- Partial wound (dermis & epidermis)
- Full thickness wound (epidermis, dermis, subcutaneous tissue and possibly muscle, bones and tendons)