pulmonary artery ligation

When the pulmonary artery is severely bleeding, or there is abnormal connection, the pulmonary artery needs to be ligated to prevent intracardiac infection due to pulmonary hypertension. This operation is called pulmonary artery ligation. Treatment of diseases: heart failure pulmonary hypertension Indication 1. Patients with repeated respiratory infections and difficult to control heart failure should be operated as soon as possible. 2. Surgery should be performed as soon as possible in combination with pulmonary hypertension. 3. Interventional embolization treatment is invalid. 4. Combined with acute or subacute endocarditis, anti-infective treatment should be performed, and surgery should be performed 3 months after infection control. However, if a pseudoaneurysm or intracardiac sputum occurs, surgery should be performed as soon as possible. Contraindications 1, with systemic diseases, can not tolerate surgery. 2, local infection, not suitable for surgery. 3, combined with severe pulmonary hypertension or cyanosis, there is a right to left shunt, considered taboo. 4, combined with tetralogy of Fallot, aortic arch interruption. Preoperative preparation Antibiotics are routinely used before surgery. Fasting and water-free 6~8h before surgery, and 1 defecation using Kaisailu before surgery. Surgical procedure 1. Anesthesia. Tracheal intubation, gas, static composite anesthesia. Larger children can be treated with a single epidural anesthesia or intravenous infusion with sodium nitroprusside. 2. The right lateral position, through the left 4th intercostal side incision into the chest. 3. Preoperative diagnosis of thicker arterial catheter can be placed in 3 control zones (lower aorta, aortic arch, left subclavian artery). 4. Sewing, tying or clipping. When the diameter of the arterial catheter is <1 cm, the ends of the arterial catheter can be ligated with a 10 gauge wire, and 1 needle is inserted through the middle. The diameter of 0.8 cm or less can be clamped at both ends of the catheter by two titanium clips. 5. For thicker catheters, the catheter can be used to block the two ends of the catheter. After cutting the catheter, the pulmonary artery end is sutured continuously with a 5-0 slip line, and then the aortic end is sutured. The gauze is pressed to stop bleeding for 5-10 minutes. 6. Under cardiopulmonary bypass conditions, the arterial catheter was ligated or the pulmonary artery was incised, and the double-head non-invasive suture was sutured or patched. 7. Short and thick arterial catheters can be sutured using Potts-Smith forceps. 8. Or embolization of the arterial catheter via the femoral artery. 9. One of the 7th intercostal chest tube. complication Chronic obstructive emphysema, chronic pulmonary heart disease, right heart failure and other complications may occur.