【摘 要】
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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 rapid
【机 构】
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Pediatric department of Cardiology, the First Affiliated Hospital of Sun Yat-sen University, Guangzh
【出 处】
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第五届钱江国际心血管病会议暨2011浙江省心血管病年会
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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.
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