ILLNESS of HUMAN
That we know about illnesses
Friday, 12 Mar 2010
You know that ...
The most rare disease is an illness a hen or as it still name dared illness, suffer only in tribe For in east part of New Guinea. This disease has an absolute mortality. One of the versions explaining the reason of occurrence of illness, it is possible to name the specific form of a cannibalism - eating of a human brain.
INFARCT OF A LUNG

Infarct of a lung - the disease caused by an embolism or a clottage of branches of a pulmonary artery (mainly share and fineer arteries). Consider, that the infarct of a lung develops in 10-25 % of cases of a thromboembolism of pulmonary arteries.

Etiology, pathogenesis. In a basis of disease the clottage of veins of the big circle of a circulation (the bottom extremities, a small basin, ileal, the bottom vena cava, etc.) lays more often, Much less often - a clottage of the right cavities of heart. Surgical interventions, the postnatal period, a chronic heart failure, fractures of long tubular bones, malignant tumours, a long immobilization contribute to development of peripheric phlebothromboses (in particular, a confinement to bed). To clottages of vessels of lungs conduct stagnation and retardation of a blood flow in lungs, a stable pulmonary hypertensia, a pulmonary vasculitis. A reflex spastic stricture in system of pulmonary arteries, and also a vasoconstriction owing to allocation from thrombocytes of biologically active substances (a serotonin, Histaminum) conduct to an acute pulmonary hypertensia and an overload of the right departments of heart. There is a disturbance of diffusion and an arterial anoxemia which is aggravated with shunting of a blood through arteriovenous anastomoses in lungs and intersystemic anastomoses. The infarct of a lung arises on a background of already available venous stagnation is more often and has usually hemorrhagic character due to outpouring from bronchial arteries in a pulmonary tissue of the blood flowing on intersystemic anastomoses, and also a return current of a blood from pulmonary veins. The infarct of a lung is formed in day after an obturation of a pulmonary vessel; its full development comes to an end by 7-th day. The becoming infected of an infarct of a lung conducts to development of perifocal pneumonias (bacteriemic, candidosis) is frequent with abscessing; at a subpleural locating of an infarct there is fibrinous or more often a hemorrhagic pleuritis. Signs, current are defined by calibre, localization and number of vessels, a condition of mechanisms, an initial pathology of lungs and hearts. The most frequent attributes: suddenly arisen dyspnea (or suddenly amplified); a stethalgia (acute, reminding a stenocardia during the moment of an embolism; amplifying at respiration and tussis at a pleuritis); Paleness with an ashy shade of a skin, less often a cyanosis; a tachycardia with frequency of intimate reductions more than 100 times a minute, sometimes - disturbances of an intimate rhythm (ciliary arrhythmia); an arterial hypotension down to a collapse; cerebral frustration (a syncope, cramps, a coma); a fervescence, tussis with a mucous or bloody sputum, a pneumorrhagia at formation of an infarct of a lung.

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