A narrow _'s general knowledge of summary of lung artery

A narrow _'s general knowledge of summary of lung artery
Disease summary
A narrow incidence of lung artery accounts for 8% - 10% of congenital heart disease. Several patients are plump with parts of narrow or funnel department skin bunch lung artery funnels. It is the sufficient development of three leaves that a narrow pathology of lung artery dissects the characteristic, clear in juncture of a leaf, but merge and form curtains each other, make a mouth obviously narrow. A ring of lung artery is very normal, or hypoplasia that a few patients and a ring are little. Expand after the lung artery backbone is narrow, and often extend to the artery near end of left lung. Have not often closed atrial septal defect with the oval hole.
Clinical manifestation
The weight of symptom is closely linked to a narrow intensity of lung artery. Extremely is seriously getting narrow to have the fidgets promptly in the neonate, tachycardia, the person who accompanies oval hole not closing or atrial septal defect, present cyanosis and hypoxemia disease because the atrium level has had right that is shunted left. A narrow patient can present the intravenous anger one of neck because of right heart depletion by 20- 30 years old in serious lung artery, and the ascites, when the sign that the liver is great. But 30%- 40% of the patients do not have obvious symptom, or only the sense breathes hard or the district pained before the heart after sports.
Physical sign: Can hear coarse systolic phase noise on the intervals of rib the second of left reason of brestbone, often accompany thinly to tremble. The 2nd sound of a district of lung artery is weakened.
Diagnose and distinguish
The electrocardiogram presents plump sum of the right ventricle ' Or) Strain. Slice can see the lung line very thinly in the chest X-ray, main lung arteriectasis. The right heart conduit can determine to check the lung artery is bad to the pressure steps of the right ventricle, calculate petals of area, judge the narrow intensity. The radiography of cardiovascular vessel can reveal narrow position and type.
Treat
The operation adapts to soliciting: The sense breathes hard after the activity, clinical manifestation person that depleted,etc. that the district pained and presented cyanosis, right heart before the heart. The right ventricle peak presses greater than 10.0kPa( 75mmHg) while having a rest The lung artery is greater than 6.7kPa( 50mmHg) badly to the pressure steps of the right ventricle .
Operation method:
The operation should go on at the low temperature or extracorporal circulatory system. Cut petals of the intersection of leaf and juncture ridge that merge, until valve base. Part getting narrow with the intersection of lung and the intersection of pulse and petals of the intersection of ring and the intersection of development and bad or funnel, should surgery correct in the same term also.
|