Measurement of Radiation and Dosimetric Procedure.pptx
Wound healing
1.
2. Occurring when a wound is closed within a few
hours of its creation. Wound edges are surgically or mechanically
approximated, and collagen metabolism provides long-term strength.
Occurs when a poorly delineated wound
is left open to protect against wound infection. The open wound allows
for the natural host defense to debride the wound before closure.
Occurs when an open full thickness wound is
allowed to close by wound contraction and epithelialization.
Thickness Wounds – Occurs when a partial-
thickness wound is closed primarily by epithelialization. This wound
healing involves the superficial portion of the dermis. There is minimal
collagen deposition, and an absence of wound contraction.
3.
4. Whether wounds are closed by primary intention, subject
to delayed primary closure or left to heal by secondary
intention1, the wound healing process is a dynamic one which
can be divided into three phases. It is critical to remember
that wound healing is not linear and often wounds can
progress both forwards and back through the phases
depending uponintrinsic and extrinsic forces at work within
the patient
5.
6.
7.
8. Two types of factor influence the wound healing :
A. Local feature :
1. infection.
2. Poor blood supply.
3. Movement.
4. Foreign body.
5. Exposure to ultraviolet ray.
6. Types , size and local of injury.
9. Systemic feature:
Age.
Infection.
Nutrition :arginine and vita A.
Hypoxia.
Anemia.
Hypo perfusion.
Metabolic disorder : D.M. And uremia .
Steroid and radiation.
