's prevention and health care of high-pressure impact on organism of lung artery

's prevention and health care of high-pressure impact on organism of lung artery
The artery high pressure of lung is the pathologic course appearing in a lot of diseases. The slight lung artery high pressure does not cause any supersession and function obstacle, the patient's symptom and physical sign cause the behavior of disease of the artery high pressure of lung. The serious lung artery high pressure can accumulate lung and heart function, thus influence whole body indirectly.
First, high-pressure impact on lung function of the lung artery
The artery high pressure of lung can strengthen the lung and keep in touch with, reduce in the lung the physiology dead space kind is kept in touch with, with increasing the pathology distributary.
The keeping in touch with amount of lung increases because the lung artery makes the tension of blood vessel wall strengthen under high pressure, through strengthening and breathing the movement amazingly and diastaltic to mechanical receptor of tube wall, make the keeping in touch with amount of lung increase, the carbon dioxide partial pressure of arterial blood is reduced, the patient feels that has difficulty in breathing.
Physiology dead space kind can increase upper blood flow volume of the lung to reduce the artery high pressure of lung to keep in touch with in the lung, can change in the lung ing, the blood flow is distributed, make the sharp department blood flow of lung increase, keep in touch with and reduce with the blood flow ratio, thus reduce the physiology dead space kind and keep in touch with, help to improve the partial pressure of oxygen of arterial blood.
Pathology distributary increase the intersection of lung and the intersection of artery and high pressure can make usually in, closing to connect the intersection of lung and artery and blood vessel of the pulmonary vein, open stating, form and shunt in the lung; Or shunt through the blood vessel of one kind of pathological changes of hemangioma; When the lung arterial pressure extremely increases, the pressure of right heart can exceed the left heart, makes the blood of the atrium dextrum of some patients flow through the oval hole and flow into the atrium sinistrum. It can cause oxygen deficiency and cyanosis to divide the flow.
Second, high-pressure impact on heart function of the lung artery
The artery high pressure of lung mainly causes the right heart to be loose and depleted, can also lead to the fact the left heart is depleted.
The right heart is loose and depleted and is increased due to after-load of right ventricle under high pressure by the lung artery. Original heart disease of the lung means the right ventricular hypertrophy caused by pathological change or breathing function obstacle of the lung promptly, expand and depleted.
Left heart depleted though the intersection of lung and the intersection of artery and high pressure will increase left the intersection of room and load, but oxygen deficiency due to the intersection of erythrocyte and blood flow resistance caused to increase can increase the after-load of left ventricle too while increasing. The more important thing is oxygen deficiency and supersession acidosis produced by this, breath acidosis that and the lung function obstacle causes can reduce shrink and relaxation function of the cardiac muscle directly, and the impact on left heart function is bigger, because the load of the left heart cardiac muscle is bigger than the cardiac muscle of right heart, consume oxygen than cardiac muscle of right heart much, worse to oxygen deficiency and acidosic tolerance.
The serious malignant degree of lung artery high pressure is extremely high, cause serious influence on patient's heart and lungs function, need social masses badly to deepen the understanding to him.
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