Abstract
Neonates with critical aortic stenosis represent a challenging group of patients with severe obstruction at a valvar level and with symptoms of heart failure. If biventricular repair is chosen, open valvotomy (OV) has been firmly established as the most effective initial treatment. In comparison with blind ballooning, OV, with exact splitting of fused commissures and shaving of obstructing nodules, can produce a better valve with a maximum valve orifice, without causing regurgitation. Thus, predictable and consistent early and longer-lasting results in any type of valve morphology are provided. Clearly superior results can be achieved in a tricuspid valve arrangement. OV not only offers a high survival benefit in the long run, but also a high quality of life, by minimizing re-interventions and preserving the native aortic valve in the majority of patients.
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