Wednesday, February 8, 2012
Diseases due to Environmental factors(physical injury)
11:25 AM |
Posted by
waleed tarek |
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a)Frostbite
:exposure to severe clod leads to vasoconstriction of the arterioles
and capillary thrombi ending by gangrene of the fingers, toes,ears and
nose.
b)Heat stroke :exposure to High temperature leads to excessive sweating and vasodilatation with loss of sodium and water ending by hypotenion ,hyperkalemia,dehydration and hypoxia .
c)Electrical injury :The injury depends on the severity of the electric current and duration of contact .It leads to skin burns , bone fracture m rupture of organs and vessels and sudden death due to carsiac or respiratory distress.
d)Radiation injury :1_skin :early manifestations include dermatitis .Late manifestations Include cancer
2_GIT :mucosal injury and ulceration .later on fibrosis occurs .
3_Testis and ovary :destruction of germ cells and later on fibrosis and sterility .
4_lung :edema and acute respiratory didtress and later on fibrosis.
5_Hemopoeitic and lymphoid destruction leading to pancytopenia and lymphopenia .
6_radiation nephritis , osteomyelitis , vascular inflamation and thrombosis
b)Heat stroke :exposure to High temperature leads to excessive sweating and vasodilatation with loss of sodium and water ending by hypotenion ,hyperkalemia,dehydration and hypoxia .
c)Electrical injury :The injury depends on the severity of the electric current and duration of contact .It leads to skin burns , bone fracture m rupture of organs and vessels and sudden death due to carsiac or respiratory distress.
d)Radiation injury :1_skin :early manifestations include dermatitis .Late manifestations Include cancer
2_GIT :mucosal injury and ulceration .later on fibrosis occurs .
3_Testis and ovary :destruction of germ cells and later on fibrosis and sterility .
4_lung :edema and acute respiratory didtress and later on fibrosis.
5_Hemopoeitic and lymphoid destruction leading to pancytopenia and lymphopenia .
6_radiation nephritis , osteomyelitis , vascular inflamation and thrombosis
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