Initial experience with balloon dilatation of supravalvar aortic stenosis.

Abstract

Primary balloon dilatation of supravalvar aortic stenosis was attempted in three patients: a 20 year old woman, a seven month old boy, and a 12 year old girl. Balloon catheters (Mansfield) with diameters of 25 mm, 8 mm, and 15 mm were used in the three patients respectively. The systolic pressure gradient across the aortic narrowing decreased considerably and the diameter of the constricted area increased significantly. Balloon dilatation was feasible and provided good immediate results and sustained relief of supravalvar aortic stenosis in these three patients. However, a larger study is needed to establish the place of this procedure in treatment.

Successful percutaneous balloon dilatation of supravalvular aortic membrane

“…[8] and Jacob et al . [9] have each treated three cases (5 hourglass, one membrane) of supravalvular aortic stenosis by balloon dilatation. Pinto et al .…”

Williams-Beuren's Syndrome: A Case Report

“…If significant supravalvar aortic stenosis is left untreated, cardiac hypertrophy followed by cardiac failure is probable [ 22 ]. Although balloon dilation [ 23 ] and stent treatment [ 24 ] of supravalvular aortic stenosis have been reported, the close proximity to the aortic valve and coronary artery orifices are significant obstacles, and currently operation is the treatment of choice. The rate of restenosis after the operation with current surgical techniques is very low.…”

Left Ventricular Outflow Tract Obstruction

“…Although balloon dilation has been reported anecdotally, it has not been accepted as a standard treatment for supravalvar aortic stenosis in most centers [191,192]. One exception is stenosis of the distal pulmonary arterial tree which can be amenable to balloon dilatation with or without stenting.…”