{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T16:49:24Z","timestamp":1760028564496},"reference-count":22,"publisher":"Cambridge University Press (CUP)","issue":"4","license":[{"start":{"date-parts":[[2009,7,30]],"date-time":"2009-07-30T00:00:00Z","timestamp":1248912000000},"content-version":"unspecified","delay-in-days":2586,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cardiol Young"],"published-print":{"date-parts":[[2002,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:italic>Objective<\/jats:italic>: To evaluate immediate and midterm results with percutaneous aortic valvoplasty.<jats:italic>Material and Methods<\/jats:italic>: We reviewed the records of 141 patients undergoing percutaneous aortic valvopasty over a period of 13 years.<jats:italic>Results<\/jats:italic>: The patients were aged from 2 months to 40 years, with a mean of 10.9 \u00b1 9.9 years. Of the total, 90 (63%) were male. The initial systolic peak-to-peak gradient decreased from 163 \u00b1 52 mmHg to 32 \u00b1 18 mmHg (p &gt; 0.01) after valvoplasty in all 141 patients, while the proportional reduction ranged from 0 to 100%, with a mean of 72 \u00b1 27%. The index of the size of the balloon to the diameter of the valvar orifice was 0.88 \u00b1 0.19 in 128 patients. The follow-up ranged from 6 to 168 months, with a mean 51 \u00b1 48 months in 70 patients. A significant difference was found in those failing after dilation when the initial evaluation was compared to the final evaluation of patients with follow-up. In those failing, the number of patients rose from 12 (17%) to 21 (30%) (p &gt; 0.01). In contrast, in those in whom we achieved success, there was not such a great difference between the initial and final evaluation: 58 (83%) versus 49 (70%) (p &gt; 0.1). The actuarial freedom curve of patients not needing new percutaneous aortic valvoplasty or surgery, by 182 months, was at 87% and 82% respectively.<jats:italic>Conclusion<\/jats:italic>: We have reviewed the largest series of patients in Latin-America reported thus far after undergoing percutaneous aortic valvoplasty, concentrating on mid term follow-up and limitations. New prospective and multicentric studies are needed from our region.<\/jats:p>","DOI":"10.1017\/s1047951100012919","type":"journal-article","created":{"date-parts":[[2009,7,30]],"date-time":"2009-07-30T13:11:00Z","timestamp":1248959460000},"page":"328-332","source":"Crossref","is-referenced-by-count":12,"title":["Percutaneous aortic valvoplasty in congenital aortic valvar 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