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II.
Cutaneous Wound Healing Process |
Wound
healing may be defined as the process whereby an
injured tissue is repaired, resulting in regeneration
of the cell lining of the tissue with the
reorganization of the deep tissue components into
scar. This
process further occurs in all organ systems in the
body. The
healing process can be categorized into primary and
secondary healing.
Primary healing,
or first intention, is the least complex as it
refers to the healing together of the edges of clean,
closely opposed wound edges.
Secondary healing
or second intention involves not only apposition
of edges, but also the filling of a soft tissue defect
as seen in traumatic, infection or disease induced
wounds. Delayed primary closure
or third intention is a combination of the first
two.
The
cutaneous wound healing process can also be
categorized into 1) the components of wound healing
and 2) the phases of healing
during which
the components interact in a very organized step-wise
fashion to form the new tissue needed for the healing
process.
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Section
2a. Healing
Processes (Intentions)
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First
Intention (Primary Healing):
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Second
Intention (Secondary Healing):
New tissue synthesis is required for all of the above.
The focus of this module will be wound healing
by secondary intent or delayed primary closure as most
complex traumatic, infection or disease induced wounds
are closed by secondary intention, while clean surgical
wounds or incisions are typically closed by primary
intention. |
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Third
Intention (Delayed Primary Closure):
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Next
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