[Percutaneous balloon aortic valvuloplasty in the newborn]. / Valvoplastia aórtica por balão no recém-nascido.

Two cases of aortic valvar stenosis are presented, each of them submitted to balloon valvoplasty in the newborn period, with instant relief of the obstruction and clinical improvement. Studies about the aortic balloon valvuloplasty are being accomplished, showing results similar to the surgical approach, but with lower risks.