Viral pneumonia viral pneumonia_ general knowledge

Viral pneumonia viral pneumonia_ general knowledge
Summary
Viral pneumonia (viral pneumonia) It is lung inflammation caused by that different types of many kinds of virus infringe the lung essence, usually infected and spreads downwards by the virus of upper respiratory tract. Take place on will it be spring winter festival more, can distribute, prevail, can also break out, need the intersection of community and acquired character pneumonia about 8% that in hospital for viral pneumonia. Infant and pre-school children, the elderly, pregnant woman, the bad one of immunity are apt to have illness coming on, the condition is relatively serious.
Cause of disease and having illness coming on in the mechanism
In the acute airway infection, virus infect account for 90%, but virus infect respiratory tract the above for main fact, have ordinary cold, pharyngitis, throat - trachea - bronchitis, thin bronchitis, baby's bleb angina (herpangina) And the epidemic chest aches (pleurodynia) When. The adult causes the virus of pneumonia mainly in order to influenza virus with popularity ' A, B-mode) It is common, the others are a influenza virus, big and small afterbirth virus, adenovirus, nose virus, coronavirus and some intestinal virus, for instance Ke Sa strange, angstrom but virus,etc., and virus such as simple bleb, chicken-pox - herpes zoster, nettle rash, measles. Infant and pre-school children are still often shut the virus of afterbirth to infect with and produce pneumonia from the respiratory tract. Because the immunity inhibits medicines to apply to tumour, organ transplant extensively in recent years, and the number of the infected of AIDS increases etc. year by year, simple herpes virus, chicken-pox - belt herpes virus, big and small afterbirth virus,etc., can all cause serious pneumonia. Viral pneumonia is infected through the droplets of people and people for the sucking infection, mainly result from infecting and spreads downwards by the virus of upper respiratory tract, often accompany trachea - bronchitis, the domestic animal such as horse, pig has a certain epidemic influenza virus, accidental contagion to wait sometimes. Excrement infect, see on intestinal virus by mouth, respiratory tract equal to the virus of afterbirth infect through the dust. Blood competent to sow scattered viral pneumonia, accompany trachea - bronchitis. The patient can be infected by more than one type of virus at the same time, and often continue the bacterial infection of hair, immunity inhibit host from continue, take place fungi and protozoacide, infect often even.
Pathology changes
Unless because pathogen is different, change too pathology differences certain,last bronchuses and inflammations around detailed pathology roughly of it and among quality pneumonia. Infect and begin from the upper respiratory tract, the cover has extensive destruction on the angry way, ulcer takes place in the mucous membrane, covered the fibrin membrane. Defending the function to reduce of the angry way, it is apt to cause the bacterial infection, the low one of immune state, Shang Ke amalgamates fungi, protozoacide especially card lung sporozoite to infect. Simple viral pneumonia causes a quality pneumonia, the alveolus has big monocytes to soak to separate by. The alveolus edema, is covered the transparent membrane containing plasma protein and fibrin, make the alveolus fill the distance of membrane to increase thick. Pneumonia can be for the cooking stove or filling the air of the office extensively, even consolidation. The visible virus includes the body in alveolus cells and macrophages. There are inflammation nature mediums that are released, act on the smooth muscle of bronchus in the thin bronchus directly, cause bronchospasm, clinical manifestation increases for the reactivity of angry way. Pathological change can leave the lung fiber after absorbing, even nodular calcification.
[1]' >Next page
|