Abstract
Aortic valve stenosis (AVS) is occurred in 2-8% of cases among all congenital heart diseases. During the natural history
80% of infants die in their first month of life. At the present day, one of the most actual treatment for aortic valve
stenosis in infants is surgical approach in borderline sizes of LV.
We present the follow-up of two infants with borderline sizes of LV, who underwent transluminal balloon valvotomy
for aortic valve stenosis. The gradient of systolic pressure on the aortic valve in average decreased on 56.7%
(from 85.7 to 37.1 mm Hg) after the operation. Technical success of the procedures was 100%. The operations had
no technical complications. Although, in the setting of progressive left ventricular failure, both patients died in the
early postoperative period. Hospital mortality was 100%. When using one of the mathematical systems in retrospective
application to detect the risk of mortality and complications for biventricular correction of aortic valve
stenosis (AVS) in infants, the risk was more than 80%.
Thus, the exact preoperative assessment for anatomico-morphological and functional parameters is necessary to
choose the appropriate surgical approach in infants with AVS and borderline sizes of LV. It is possible to predict the
operation outcome with mathematical systems.
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