Search for: [Abstract = "eficit as compared to standards for height and age was similar in all three groups, amounting to 8.6 % \(Group 1\), 7.4 % \(Group 2\) and 10.5 % \(Group 3\). Conclusions\: 1\) While qualifying patients to BPV, in addition to a thorough physical examination and basic supplementary studies, a decisive role is played by comprehensive echocardiographic diagnostic management, despite its limitations. 2\) Late follow\-up confirms the validity and effectiveness of PBVP in the management of PVS, even in cases of valvular dysplasia. 3\) Restenosis is rare and may be effectively treated in a repeated procedure. Subvalvar pulmonary stenosis, observed in most severe forms of PVS, may regress after a successful BPV. 4\) Significant, gradually increasing with age pulmonary valve insufficiency may develop after BPV in late follow\-up in patients with most severe form of PVS, what requires careful monitoring of this group of children. 5\) The risk of complication development is low providing the principles of the procedure are carefully followed. 6\) Further development of children with PVS subjected to BPV is normal."]

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