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Acontusedwoundinwhichtheskinremainsunbrokenwhile
....
....
....vesselsunderneatharerupturedmayresultinthe
formationofahaematomaifextravasated...
...
...
...
.becomes
encapsulatedorecchymosisifitisdiffused.Acrushingwound
involvesmashingor...
...
...
...
...
..oftissueswithminimallacera-
tion.Apenetratingwoundisa...
...
...
...
...
..inwhichnotonlythe
skinisbrokenbut...
...
...
...
...
..hasoccurredalsotosubcutaneous
tissueanddeeperlying...
...
...
...
...
...orcavities.Apuncturewound
madebyasharppointed...
...
...
...
..ispotentiallydangerous
becauseitmaygive...
...
..tothrombosisandpossiblereleaseof
emboliand...
...
...
...
..asitisusuallyacollapsedwound.
Infection,haemorrhage,thrombosismayallconstituteaserious
...
...
...
.totheorganismifnot...
...
...
...
...
..intime.
PARTFOUR
part
.
parts
.
formation
.
symptoms
.
effect
.
exposure
.
area
.
development
.
degrees
Frostbiteisthefreezingor...
...
...offreezingofskinordeeper
tissuesofany...
...
...ofthebody,especially...
...
...
.suchasears,
nose,cheeks,fingersortoes,duetoaprolonged...
...
...
...
..tolow
temperature.Theusual...
...
...
..includetingling,rednessfollowed
bypalenessandnumbnessoftheaffected...
...
...
...Three...
...
...
..of
frostbitearedistinguished:transitoryhyperemiafollowingnumb-
ness,
...
...
...
...
...ofvesicles(blisters)and...
...
...
...
...ofgangrene.
PARTFIVE
formation
.
full
.
size
.
thickness
.
local
.
charred
.
damage
.
excessive
.
underlying
.
electrical
.
superficial
.
systemic
.
outer
.
intensity
.
tenderness
Aburnisatissueinjuryresultingfrom...
...
...
...
...exposureto
thermal,chemical,
...
...
...
.orradioactiveagents.Theeffectsmay
be...
...
...
..orbothlocaland...
...
...
...dependingonthetype,
durationand...
...
...
...
.oftheexposureaswellasonthelocation
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