Search for: [Abstract = "1988\-2004, in relation to\: 1. type of valvular lesions and degree of stenosis, 2. age of patients subjected to BVP and such technical aspects of the procedure as\: a. balloon diameter and its ratio to the valve annulus, b. types of balloon catheters employed, c. the need for employing double balloon technique, 3. restrictions in employing the method resulting from the types of valvular morphological lesions, 4. immediate BVP results, including\: a. reduction of pressure gradient across the pulmonary valve, b. development of valve insufficiency, c. development of other procedure\-associated complications, 5. early and late results, including\: a. recurrent stenosis, b. significant \(>IIo \) pulmonary valve insufficiency, c. the need for re\-intervention, d. assessment of physical development of patients and their physical efficiency \(NYHA classification\). Material\: 137 \(76 M\+61 F\) children, aged between 1 month and 16.3 years of life \(x=5.3 ±4.8\) with isolated PVS diagnosed by physical examination, ECG, chest X\-ray, comprehensive echocardiography and detailed hemodynamic and angiocardiographic assessment. They were qualified to BPV between 28.03.1988\-31.12.2004, based on echo studies \(Doppler gradient > 25 mmHg\). Newborns with critical PVS were excluded from the study. Three patients with PVS had been previously subjected to a surgical valvulotomy \(when 1 month,"]

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