Search for: [Abstract = "ystemic pressure\), Group 3 \(N=38\) – severe PVS \(with suprasystemic right ventricular pressure \- RVSP > 100 % of systemic pressure\). In each group, the analysis included age at BPV, results of clinical assessment and basic tests \(ECG and chest X\-ray\), comprehensive echocardiographic evaluation and intervention management. Results\: The follow\-up period was between 1 year and 10 years, x = 6.1 years \(SD – 3.4 years\). The age of pts at BPV was as follows\: Group 1 – x = 6.0 ±4.9 years, Group 2 – x = 4.1 ±3.8 years, Group 3 – x = 5.6 ±5.6 years. In each group, BPV was most commonly performed in patients aged 2\-6 years. At the same time, the percentage of infants increased \(8.6 %, 24.4 % and 28.9 %, respectively\). In Group 1, the sex ratio was equal. A predominance of males was noted with an increasing degree of stenosis \(Group 2 – 56.1 %, Group 3 – 63.2 %\). As it follows from the analysis of clinical signs, with the increase of PVS, cardiac murmur was louder and split 2nd sound in the pulmonary artery area was more common, along with right ventricular impulse. The results of physical examination showed the highest degree of discrimination between Groups 1 and 2 and 1 and 3, being the most similar in Groups 2 and 3. ECG showed right ventricular hypertrophy in the majority of children from Group 1 and 2 and in all Group 3 patients. ECG recording was normal in 24.1% of Group 1 a"]

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