A narrow _'s general knowledge of lung artery

A narrow _'s general knowledge of lung artery
Summary
Lung artery one narrow ' The simple lung artery one is narrow) It is a kind of common congenital heart disease, mean that causes a structure of heart lung artery to change for various reasons, while causing the right ventricle to shrink, the lung artery one can't be totally opened, lead to the fact a series of pathologic physiology of heart changes and claims the lung artery one is narrow.
Onset mechanism
This deformity of foetus has not influenced the blood circulation greatly, the heart was normal in size when born ining, lung expand grow, but because lung artery mouth narrow, right ventricle arrange blood obstruct, therefore right the intersection of room and pressure increase, and the lung artery is low in pressure. The right ventricle over a long time shrinks load to increase, cause the right ventricle to be plump, the heart can still generally keep to arrange blood volume, when the right heart is depleted, the heart arranges blood volume to drop, the right ventricle is expanded, atrium dextrum and venous pressure around rise. The pressure of atrium dextrum can exceed the pressure of atrium sinistrum while increasing, if there is atrial septal defect of heart or not close the oval hole, can cause right to go to the left and shunt and present cyanosis.
Clinical symptom
The narrow patient of slight lung artery generally has no symptom, but as increase symptom of age is manifested gradually, mainly shown as and worked endurance bad, weak, uncomfortable in chest and coughing, there is a chest that aches or faints occasionally, palpitation, out of breath when symptom after fatigue. Severe to can have dizzy or faint, break out while being getting narrow, case appear the intersection of neck and intravenous the intersection of anger and piece, the intersection of liver and swelling and the intersection of lower extremities and the intersection of edema,etc. and depleted symptom of right heart later period, if the compatible atrial septal defect or oval nest has not been closed, it is obvious the lip or tip is referred to (toe) End cyanosis and poke point ' Toe) . What merits attention is lung the intersection of artery and mouth narrow patient relatively easy to suffer from the lung, infect, such as pulmonary tuberculosis. There can be depleted symptom of right heart on later stage. Even can erupt membrane inflammation in the infective heart simultaneously.
Check
Physical examination, most patient good in development, main physical sign can hear and grades of loud coarse injection nature dry one kind of systolic phase noises in the intersection of brestbone and left the intersection of reason and the second rib, shank or the intersection of left and clavicular lower district conduct left, noise loudest can touch systolic phase, tremble, the noise is different because of narrow intensity, velocity of flow of blood flow, blood flow volume and thickness of wall of the chest in intensity. The second heart sound of a district of lung artery is often weakened, split. The intersection of funnel and parts of narrow patient, noise and vibrate position generally in the third left or place under 4 rib, the intensity is relatively light, the second heart sound of a district of lung artery may not be lightened, even split sometimes.
The serious one is narrow there can be physical sign that right ventricles increase, the praising nature which the district obviously had beat before the heart, patient's development can be relatively bad. With atrial septal defect of heart but yes patient going to the left to shunt in right, can point cyanosis and poke.
The intersection of lung and the intersection of artery and the intersection of mouth and narrow auxiliary examination including X-ray examination, electrocardiogram check and supersound aroused in interest to pursue, check; Lung artery petals of narrow case supersound aroused in interest to pursue, check, can reveal petals of open and restricted leaf, petals of leaf show in round-top the intersection of projection and petals of narrow and small mouth, can find out right room, flow out dishes of the intersection of muscle and plump and right ventricle and intensity that atrium dextrum expands. Have important clinical value.
Diagnosis
Simple the intersection of lung and the intersection of artery and mouth narrow physical sign, X-ray, electrocardiogram, supersound aroused in interest to pursue, check have sure characteristic nature their, easy to make a definite diagnosis of, meanwhile, the right heart conduit can contribute to judging narrow type and intensity while checking. Can further find out about lung artery, lung artery one and dissection situation of the funnel department in cardiovascular vessel radiography of the alternative.
A narrow treatment of lung artery:
Slight lung artery narrow to have symptom at the clinical patient, can grow and meet normal viability, need surgery to treat normally, intermediate to severe and narrow, first-selected therapeutic method is employing and expanding narrow lung artery one through the ball bag conduit, the majority can obtain satisfactory curative effect, even can also adopt in baby period. Its long-term result waits to further observe. Amalgamate the narrow one of funnel, it is not good that the sacculus conduit expands the result. The pressure of baby's right ventricle is up to 20. 0- 26. 7kPa( 150- 200mmHg) Person,it brief on seriously obstruct, it should perform a surgical operation promptly, cut by narrow valve, so as not to delay time, the obstinate right heart appears depletedly, lose and treat the chance.
A narrow prognosis of lung artery:
Lung the intersection of artery and petal narrow prognosis is good slightly, can live to grow up. It is in heart failure that severe to often happen in early days. Common complication, for membrane inflammation and in heart failure in the bacterial heart of subnormal temperature. Operation winner's symptom lightens or disappears, can participate in and work normally, the heart appearance dwindles, it is lightened that the right ventricle is plump, heart murmur is lightened, but scarely have the case totally disappearing.
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