ObjectiveTo summarize our experience of surgical treatment for right pulmonary artery originated from the ascending aorta by using adult diameter artificial vascular and study the operative indication, design, method, and therapeutic efficacy. MethodsWe retrospectively analyzed clinical data of 11 patients with right pulmonary artery originated from ascending aorta in The Second Affiliated Hospital of Harbin Medical University from May 2008 through December 2013, who were treated by using adult diameter artificial vascular. The patients ranged from 4 months to 25 months old, weighted 4-15 kg. Among of them, 4 patients had persistent truncus arteriosus and 7 had aortopulmonary septal defect. All patients were complicated with moderate pulmonary hypertension. All the patients underwent one stage surgical repair under extracorporeal circulation and cardiac arrest. During the surgery, end to side anastomosis was done between the right pulmonary artery and 16-18 mm diameter artificial blood vessels. And artificial blood vessel was connected to the main pulmonary artery or right ventricle outflow tract incision from the aorta above. ResultsThe average operation time was 179-325 (224±68) min. The average cardiopulmonary bypass (CPB) time was 81-208 (117±54) min. The average aortic clamping time was 29-63(42±21) min. The mean residence time in ICU was 71-197 (109±42) hours. The average assisted mechanical ventilator time was 59-191 (91±26) hours. The average length of stay in hospital was 21-39 (28±11) days. Low cardiac output syndromes caused by pulmonary arterial hypertension occurred in 5 patients including 2 deaths and 3 patients with good recovery by reducing the pulmonary arterial pressure and peritoneal dialysis. The result of postoperative cardiac color ultrasound examination of 9 survival patients showed vascular prosthesis, no distortion, no stenosis of the anastomosis, deformity correction satisfaction. Nine patients were followed up for 3-60 months. The results of echocardiography showed no anastomosis and artificial vascular stenosis, and the pulmonary arterial pressure decreased significantly. ConclusionThe right pulmonary artery originated from the ascending aorta in children should be operated as soon as possible. Compared the adult diameter artificial vascular treatment for one stage repair of right pulmonary artery from the ascending aorta with other operation methods, both short-term and long-term effects are good. Postoperative low cardiac output syndrome is a common complication.
Objective To investigate the management during offpump coronary artery bypass grafting (OPCAB) for patients with ascending aorta atherosclerosis and to find appropriate treatment for minimizing the postoperative cerebrovascular accidents. Methods 236 patients with ascending aorta atherosclerosis were retrospectively analyzed underwent OPCAB in this hospital from Sep.2004 to Dec.2007, 4 of them received “No-touch” technique, 35 of them had the proximal anastomoses with the Enclose assistant, and 197 of them had the proximal anastomoses with the assistant of Heartstring. Hemodynamic indexes were consecutively monitored, blood streams of grafts was monitored by transit time flow measurement (TTFM) to evaluate the quality. Results Distal anastomoses 881，proximal anastomoses 267, the blood stream of 881 grafts was monitored, the mean flow was 16.2±18.7 ml/min, and the pulsatility index (PI) were 4.9±2.3, indicating the good quality of all grafts. The change of hemodynamic indexes including mean artery pressure (MAP, 78.1±10.4 mmHg vs. 80.9±8.1 mmHg）, pulmonary capillary wedge pressure (PCWP, 11.9±3.6 vs. 10.9±2.1 mmHg）, mean pulmonary artery pressure (MPAP, 17.3±4.3 mmHg vs. 15.3±2.8 mmHg）, cardiac output (CO, 4.2±1.2 L/min vs. 4.5±1.6 L/min）, center vinous pressure (CVP, 9.2±2.3cmH2O vs. 9.3±1.8 cmH2O）, heart rate (HR, 71.4±14.0 beats/min vs. 73.4±16.5 beats/min）, there were no statistically difference between before and after proximal anastomoses (Pgt;0.05). Two patients died of low cardio output during operation, 4 patients with transient ischemic attack were improved by 2 months medical therapy, and others had no postoperative complications as perioperative myocardial infarction etc, and the time of stay hospital was 10.5±4.2d. Followup 3-24 months for 185 patients, all living patients had no myocardial or cerebrovascular accidents, the symptoms were alleviated and myocardiac function improved. Conclusion Assessing the degree of the ascending aorta atherosclerosis sufficiently before and during the operation, choosing different operational strategy, and decreasing the manipulation of aorta can decrease the incidence of cerebrovascular accident and get better clinical result.