Medicine an Surgery notes

Apr 24th, 2015
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BURNS-DefinitionTissue injury caused by thermal, radiation, chemical, or electrical contact resulting in protein denaturation, loss of intravascular fluid volume due to increased vascular permeability and oedema.Incidence100% about 1/3 of whom require admissionEtiologyChemical, Thermal, Electrical, Mechanical, Radiation, Frost bitePersons at Risk of burns1.Extremes of age - the very young (<4yrs) or very old (>50yrs)2.Those whose ability to protect themselves is impaired or prone to accidents Alcoholics, Sick, paraplegics ,diabetics, psychiatric patients and patients of convulsive disorders3.The unlucky - Innocent bystander4.The careless - Storing petrol in the house, adding paraffin to a lit stove, smoking in bed, working close to high tension electric wiresSkin Anatomy and FunctionSkin is the largest organ of the body.It is 0.025 m2 in children and 1.8m2 in adults. It has 3 major tissue layers. Epidermis The outermost layer, the epidermis, is composed of stratified epithelium. Epidermis has two components, an outer layer of anucleate cornified cells (stratum corneum) that covers inner layers of viable cells (Malpighian layers) from which the cornified surface cells arise by differentiation. The stratum corneum acts as a barrier to impede the entrance of microorganisms and toxic substances while allowing the body to retain water and electrolytes. Malpighian layers provide a continuous production of cornified ce

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