Abstract： Objective To investigate the longterm complications and preventions of rapid twostage arterial switch operation through longterm follow-up. Methods We reviewed the clinical information of 21 patients of rapid twostage arterial switch operation from September 2002 to September 2007 in Shanghai Children’s Medical Center. Among them, there were 13 males and 8 females with an average age of 75 d (29-250 d) and an average weight of 5 kg (3.5-7.0 kg). The data of left ventricle training period and the data before and after the twostage arterial switch operation were analyzed, and the risk factors influencing the aortic valve regurgitation were analyzed by the logistic multivariable regression analysis. Results The late diameter of anastomosis of pulmonary and aortic artery were increased compared with those shortly after operation (0.96±0.30 cm vs. 0.81±0.28 cm, t=-1.183,P=0.262; 1.06±0.25 cm vs. 0.09±0.21 cm, t=-1.833,P=0.094), but there was no significant difference. The late velocity of blood flow across the anastomoses was not accelerated, which indicated no obstruction. The late heart function was better than that shortly after operation, while there was no significant difference between left ventricular ejection fraction(LVEF) during these two periods (62.88%±7.28% vs. 67.92%±7.83%,t=1.362,P=0.202). The late left ventricular end diastolic dimension(LVDd) was significantly different from that shortly after operation (2.16±0.30 cm vs.2.92±0.60 cm，t=-5.281，P=0.003). Compared with earlier period after operation, the thickness of left ventricular posterior wall thickness（LVPWT）was also increased (0.39±0.12 cm vs. 0.36±0.10 cm,t=0.700,P=0.500), but there was no significant difference. The postoperative aortic valve regurgitation was worsened in 4 patients (30.77%, 4/13), not changed in 7 patients and alleviated in 2 patients compared with that before operation. There was no severe regurgitations during the followup. The logistic regression analysis showed that the small preoperative diameter ratio of aortic valve to pulmonary valve and long follow-up time were two risk factors for the [CM(159mm]aggravation of aortic regurgitation. Conclusion There is a relatively high aortic regurgitation rate after rapid two stage arterial switch operation, but there is no later death or reoperation and the survival conditions are satisfactory. All patients must be followed up periodically to check the anastomosis of pulmonary and aortic arteries and the aortic valve.
ObjectiveTo assess outcomes of transcatheter aortic valve replacement (TAVR) for pure native aortic valve regurgitation.MethodsA total of 129 patients underwent transfemoral TAVR in Fuwai Hospital from May 2019 to October 2020 were retrospectively analyzed. There were 83 males and 46 females with an average age of 72.26±8.97 years. The patients were divided into a pure native aortic valve regurgitation group (17 patients) and an aortic valve stenosis group (112 patients).ResultsThe incidence of valve in valve was higher in the pure native aortic valve regurgitation group (47.0% vs. 16.1%, P<0.01). There was no statistical difference between the two groups in conversion to surgery, intraoperative use of extracorporeal circulation, intraoperative left ventricular rupture, postoperative use of extracorporeal membrane oxygenation (ECMO), peripheral vascular complications, disabled stroke, death, or pacemaker implantation. There was no statistical difference in the diameter of annulus (25.75±2.21 mm vs. 24.70±2.90 mm, P=0.068) or diameter of outflow tract (25.82±3.75 mm vs. 25.37±3.92 mm, P=0.514) between the pure native aortic valve regurgitation group and the aortic valve stenosis group.ConclusionTransfemoral TAVR is a feasible method for patients with pure native aortic valve regurgitation. The diameter of annulus plane, the diameter of outflow tract and the shape of outflow tract should be evaluated.
Transcatheter aortic valve implantation (TAVI) is an important alternative in treating high-risk patients with aortic valve regurgitation. Transcatheter tricuspid valve implantation (TTVI) is also an important treatment option for high-risk patients with tricuspid regurgitation. We reported a 72-year male patient who underwent TAVI due to severe aortic valve regurgitation using a J-Valve. During a two-year follow-up, the patient developed secondary tricuspid regurgitation to atrial fibrillation, and subsequently received TTVI using a LuX-Valve. Following the interventions, the patient's symptoms were significantly improved, and echocardiography indicated good hemodynamic performance of both transcatheter heart valves. This case highlights the feasibility and effectiveness of performing multiple valve implantations via transcatheter approaches in high-risk elderly patients.