Approximately
90% of the fire deaths occur at home. Most of them is caused by smoking, defective electrical wiring, defective and misused heaters, children playing
with matches, clothing catching on fire. Burns are divided into the following categories:
-
flame;
-
contact;
-
radiant heat;
-
scalding;
-
chemical;
-
microwave.
The flame
burns appears when flame comes with the
direct contact with the body; it is dynamic, quick process, scorching of the
skin progressing to charring. Flash burns are a variant of flame burns, which
are caused by initial ignition from flash fires. The initial flash is of short
duration, it lasts a couple of seconds, all exposed surfaces are burned uniformly.
If the victim’s clothes are ignited a combination of flash and traditional burn
occur. Flash burns result in partial-thickness burns and signed hair. The thermal
conductivity of the skin is low, the burn might be superficial. Contact burns
involve physical contact between the body and a hot object. The temperature is
of 70 C
degrees or higher, trans-epidermal necrosis occurs within less than a second. Radiant
heat burns are caused by heat weaves e.g. electromagnetic weave. There is a
contact between the body and the flame or a hot surface. The skin becomes
blistered, with areas of skin slippage. Long – prolonged contact with the heat
will make skin brown, leathery. In most
radiant heat burns hair is intact, if the heat is long there will be charring
of the body. There are several factors which determine whether radiant burns
occur:
1.
temperature of the heat weave contacting the skin;
2.
time of exposure;
3.
whether the skin is covered with clothing.
Scalding burns
are caused by contact with hot liquid, most commonly water on exposed skin. The
severity of thermal injury depends on:
-
the extend of the burned area;
-
the severity of the burn;
-
the victim’s age;
-
the presence of the inhalation injuries.
The burn
might be described as:
-
first;
-
second;
-
third degree.
First degree burns are superficial ones – the skin is
burned, yet, without blisters. The epidermis is intact, however, there is some
injury of the cells. The first degree burns are .e.g. sunburns. Second degree (partial
thickness) burns are subdivided into deep and superficial. The burns are red
with blister lesion, there is destruction of striatum gronulosum, corneum, with
totally destroyed edema. Third degree (full-thickness) burns are characterized with
coagulation necrosis of epidermis and dermis. The destruction of the dermal appendages. Fourth degree burns
are very deep – deeper than the skin.
The inflammation
of clothing is the most common cause of burns, the victims tend to be very
young and the old. These type of burns are extend but not necessary deep. It happens mostly while cooking and a person
wears a long-sleeved night-gown, a robe or a dress. The deaths caused by fire
might be immediate or delayed. Immediate deaths are caused by direct thermal
injury to the body; smoke inhalation. Delayed deaths occur within three or four
days after the accident it is caused by shock, fluid loss, respiratory failure,
most of these deaths are also caused by sepsis or chronic respiratory
insufficiency.
The burned
body is usually impossible to distinguish. Microscopic examination of the burns
is not much helpful. When the body is extremely burned the skin might split
away exposing muscles, the internal organs are seared or charred. The burned
bones have gray-white color. It may crumble. In case of head trauma during the
fire blast, postmortem fire epidurals are chocolate brown color, have a crumbly
or honeycomb appearance. They are large and thick, they typically overlie the
frontal, parietal and temporal areas, as well as, occipital ones.
In smoke
inhalation the blisters might appear in larynx, thorax and lungs, there is an
extensive burning of the air passages. It is carbon monoxide poisoning, which
resulted in oxygen deprivation. The blood test is a must. The body
identification is case of smoke inhalation is not complicated, as long as, the
facial recognition is possible, alongside with the dental X-Rays.
Smoking is
a common cause of house fires. Homicide by fire is an intentional act;
deliberately set fire – a suspicious arson may have purposes such as profit,
insurance fraud, revenge. The arson is an attempt to conceal the cause of
death. Self immolation is rare but occurs and an individual douse himself with
flammable liquid. In chemical burns the extension of it depends on the agent. Microwave
burns are associated with molecular agitation.
The following
examples of fire accidents are to explain Us how important is it to avoid a
direct contact with it. Fire is an unstoppable force, rapid, ruthless and
unpredictable. A mild, insignificantly looking flame, fireworks may burst into lethal
element. Beware of flames and do not play with fire unless it is absolutely
necessary.
Acknowledgements:
The Police Department;
https://www.politie.nl/mijnbuurt/politiebureaus/05/burgwallen.html and a Chief Inspector – Mr.Erik
Akerboom ©
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