's general knowledge of summary of pneumonia and streptococcus pneumonia

's general knowledge of summary of pneumonia and streptococcus pneumonia
Summary
Pneumonia and streptococcus pneumonia are by the pneumonia streptococcus (streptococcus pneumoniae) Or pneumonia coccus (pneumococcal pneumoniae) Lung essence inflammation of lobe of the lung or lung section caused. Account for half of acquired character pneumonia of community. A disease is urgent and sudden, charactered by hyperpyrexia, shiver with cold, coughing, blood phlegm and chest ache. Big leaf pneumonia that pneumonia due to this fungus called traditionally promptly. Change already less because of the wide application of antibiotic, typical symptom, X-ray in recent years. This disease is still sure that infective.
Cause of disease and having illness coming on in the mechanism
The pneumonia streptococcus is blue for leather to dye the positive coccus, match more or the short chain is arranged. Have membrane of pod, the size of its virulence relates to candy structure and content in the membrane of pod. According to the antigenic characteristic of film many candies of pod, the pneumonia streptococcus can be divided into 86 serum types. Adult pathogen belong to for 1-9 and 12 type more, with 3 type virulence being most strong, many with 6-14-19 and 23 type in the children. Pneumonia streptococcus can survive several months in dry phlegm, but sunshine penetrate hour such as l direct, or heat it to 52 ' C can be killed in 10 minutes, also very sensitive to disinfectant such as being sour of charcoal of stone. When organism immunological function normal, pneumonia streptococcus to live away from home in oral cavity and first normal fungus group of department who swallows nose, its disease-carrying rate often has a difference with the changes of age, season and immune state. When the organism immunological function is damaged, the pneumonia streptococcus of poisonous strength invades the human body and causes a disease. Besides pneumonia, bacteremia or infective shock can take place in a few, the elderly and the infant and pre-school children's condition are particularly serious.
The onset is regarded winter and early spring as much, often infect with the virus of respiratory tract parallelly. The patient is often between twenty and fifty for being originally healthy or old age and infant and pre-school children, men more meet. Smoker, chronic bronchitis, bronchiectasis, congestive chronic disease patient and immunity in heart failure inhibit the host from being apt to be attacked by the pneumonia streptococcus. Pneumonia streptococcus does not produce toxin, cause primary to organize necrosis or form in the cavity. Pathogenic strength its to because of many the intersection of candy and the intersection of pod and membrane to the intersection of invasion and attack and function that organize, cause the intersection of alveolus and wall edema at first, appear leucocyte and erythrocyte ooze out, including fungus to ooze out liquid, expand to central part of lung by the intersection of Cohn and hole, even involve several lung section or whole lobe of the lungs. Begin with the periphery of the lung because of pathological change, so the boundary is clear among the leaves, apt to involve the pleura, cause exudative pleurisy.
Pathology changes
Pathology changes congestion one, red liver to change one, ashy liver and change one and dissipate one. Lung organize the intersection of congestion and edema, slurry ooze out and be red, ooze out by leucocyte in the alveolus, the leucocyte engulfs bacteria, then the fibrin oozes out things to dissolve, absorb, the alveolus is inflated again. A pathologic stage, have a precise boundary in fact in the liver, through employing the antibiotic treatment in early days, such typical pathology has been already rare by stages. The institutional framework of lung has not been damaged more, has not kept fibrous cicatrix after pathological change was dissipated. The inner fibrin of extremely specific patient's alveolus is absorbed incompletely, even have fibrous cells into to take shape, forming machine pneumonia. The elderly, and infant and pre-school children infect can distribute along the bronchus ' Bronchus pneumonia) . If has not used antibiotic in time, 5% - 10% of the patients can erupt empyema simultaneously, 15% - 20% patient last blood circulation conduit because of bacterium through lymphatic vessel, chest,can last meningitis, pericarditis, infect membrane inflammation, arthritis, otitis media,etc. outside lung in heart.
[1]' >Next page
|