Mechanism's _ general knowledge of morbidity of lung abscess

Mechanism's _ general knowledge of morbidity of lung abscess
Lung abscess can be classified according to having illness coming on for time and pathogen. Acute lung abscess does not exceed 4- 6 weeks, the time of chronic abscess is longer.
Stop up one section or small section of bronchuses after sucking and including the pollutant of fungus from a nasal cavity in the lung, make far carrying lunging piece, some bacterium breed and grow rapidly, inflammation produces, small vascular thromboembolism, lung organize necrosis quickly, liquefaction become abscess after the about 1 week. The suppuration is expanded, the small bronchus around of destruction, the liquid of suppuration can be in charge of the atmosphere to discharge, form a suppuration, volume is not of uniform size, or occur frequently, can happen in any position in the lung singly. Occuring frequently small abscess ( lt; 2cm) Forming relate to pneumonia or lung gangrene. Some abscess behind the necrosis present half the solid lump, discharge the intersection of suppuration and liquid to bronchus, very like tumour. Abscess, more under the intersection of lung and the intersection of edge and pleura, but because pleura early to have inflammatory adhesions promptly, the suppuration becomes to the pleura there is angry and thoracic and actually few empyema or suppuration broken. Acute one, such as guiding unobstructedly, suppuration is being discharged smoothly, add drug therapy, pathological change can heal gradually, leave the fibrous organization of small quantity. If the bacterium has strong virulence, it is inappropriate to treat, the bronchus can not be guided smoothly, then pathological change is expanded, the lung splits to infecting the little blocking action, pathological change often invades and neighbor section and neighbor leaf, even involve the whole lung. If bronchus have the intersection of valve and stop up, can form tension cavity, apt to break to thorax.
If acute abscess fails to control in time, lung inflammation and suppuration delay until more than 2- 3 months, become chronic lung abscess. Many places of lung are destroyed, China has sinuses of the Yu song that communicates, pathological change is repaired while destroying in an organized way, the suppuration charters winding for thicker fibrous wall gradually. The bronchus is infringed and opened and stopped up, produce the expansion at various degrees because of inflammation. Abscess can be in resting state, perhaps because the phlegm liquid overflows to make and is infected with to sow scatteredly too. But shrink of lung tissue reason fiber. The pleura forms the close adhesion because of repeated inflammation, systemic circulation and lung are circulated and formed a lot of blood vessels and communicated, have more thick blood vessels in the adhesion, even can hear systolic phase or continuity blood vessel noise (pleura adhesion noise) in the body surface . The adhesion of the lung door is very tight, the bronchus artery is increased thickly and expanded.
Gravity and suck by mistake when it is sick since body posture is lung the decisive factors of section,so, last segment pairs of lungs lower and easy to be send sections of outside sections inferior to position by mistake in front of, behind leaf on right, accounts for 85% of lung abscess. Lie supine the intersection of location and the intersection of lung and abscess take place until right side many relatively, give piece a piggyback to be most common with the intersection of right and lower leaf, because total bronchus and centre line contained angle of right are small, and is relatively thick, the pollutant is apt to enter. The same reason, the lower leaf carries section, the upper leaf back segment, " armpit section " Occur frequently in the place. Lung abscess happen in section in first period of in right, middle period and tongue, should suspect and exist the trachea part and obstruct or swallow and unusually wait for the inducement.
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