what is healing by primary intention
all tissues, including the skin, are mechanically held closed (staples, tape, suture, glue etc)
what type of wound would use primary intention healing
little tissue loss, wound edges closely approximate,
how does the healing take place
direct union of granulating surfaces
does clotting take place
yes, it is a small clot
what is the cosmetic impact of healing by primary intention
little or no scar
what commonly inflicted wounds are usually healed by primary intention
surgical incisions
what is healing by secondary intention
wound left open to heal from inside out
how do secondary intention wounds close
edges come together naturally by means of granulation and contraction
what would suggest a wound should heal by secondary intention
gaping wound, significant tissue loss
what is healing by third intention
wound left open for a number of days, closed if it is found to be clean
what are the advantages of healing contaminated/dirty wounds by third intention
less chance of SSIs than primary, less scarring than secondary
is there a fourth mode of healing
yes, partial thickness wounds just heal by epithelisation
how is the clot and scar different for secondary intention
larger clot and scar form