Percutaneous balloon aortic valvuloplasty with rapid right ventricular pacing in the management of congenital aortic stenosis in infants:2 case reports
Objective To investigate a safer method for percutaneous balloon aortic valvuloplasty(PABV) in the treatment of congenital aortic stenosis in infants.Methods: During PABV, the right ventricle is rapidly-paced to decrease the aortic systolic blood pressure (SBP) while simultaneously dilating the balloon.The decrease in aortic SBP allows for stabilization of the balloon in the left ventricular outflow tract, decreasing the intravalvular movement of the balloon and thus the risk of damaging the aortic valve.Results: The procedure described above was performed on 2 patients: a 1 year-and-2-month-old male and 3-year-old male.Respective balloon:annulus diameter ratios were 0.83 and 0.8.Immediately after balloon dilatation, peak-to-peak systolic-pressure-gradients (PG) across the aortic dropped from 80mmhg to 20mmHg and 90mmHg to 18mmHg respectively.On follow-up after 2 months to 1 year, repeat echocardiography showed respective PG of 38mmHg and 43mmHg, with no obvious increase in aortic regurgitation.Conclusion: PBAV is an effective method in treating neonates and infants with congenital aortic stenosis.Rapid right ventricular pacing during the balloon inflation stage helps to stabilize the balloon,and decrease the risk of post-operative complications.
Congenital aortic stenosis Paediatric cardiology Percutaneous valvuloplasty Interventional catheterization
Yun-quan LI Hui-shen WANG You-zhen QIN Shu-juan LI Yue-se LIN Guo-zhen CHEN
Pediatric department of Cardiology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
国内会议
杭州
英文
446-450
2011-07-28（万方平台首次上网日期，不代表论文的发表时间）