{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T20:30:07Z","timestamp":1772051407221,"version":"3.50.1"},"reference-count":33,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2002,8,1]],"date-time":"2002-08-01T00:00:00Z","timestamp":1028160000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cardiovascular Surgery"],"published-print":{"date-parts":[[2002,8]]},"abstract":"<jats:sec><jats:title>Background:<\/jats:title><jats:p> The aim of this study was to assess the utility of intraoperative transesophageal echocardiography (TEE) in the evaluation of patients undergoing aortic valve replacement with the CryoLife-O'Brien\u00ae (CLOB) Stentless Porcine Aortic Bioprosthesis. <\/jats:p><\/jats:sec><jats:sec><jats:title>Methods:<\/jats:title><jats:p> Between May 1994 and March 1995, 26 patients (15 men, mean age 68.4\u00b110.78 years) had a CLOB valve in the aortic position. Transprosthetic gradients and valve regurgitation were detected by intraoperative TEE. Prosthetic regurgitation and transvalvular gradients were evaluated at six-month intervals using transthoracic echo-Doppler (TTE). <\/jats:p><\/jats:sec><jats:sec><jats:title>Results:<\/jats:title><jats:p> The majority of implants resulted in low gradients (83.7%), with only four patients exhibiting a moderate gradient (15.3%). Color flow Doppler imaging showed central aortic regurgitation in only four of 25 patients (trivial, n = 4; mild, n = 1). There was one paravalvular leak (trivial. n= 1). At follow-up examination (mean 37\u00b112 months), 24 of 25 patients exhibited low mean gradients (7.25\u00b12.81 mmHg). At follow-up one patient who had low velocities in the LVOT at perioperative evaluation exibited a moderate gradient (45 mmHg) with an effective orifice area of 0.8\u20130.9 cm<jats:sup>2<\/jats:sup>. <\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions:<\/jats:title><jats:p> Intraoperative TEE was effective in assessing prosthetic stentless valve function. <\/jats:p><\/jats:sec>","DOI":"10.1177\/096721090201000407","type":"journal-article","created":{"date-parts":[[2022,9,13]],"date-time":"2022-09-13T13:04:36Z","timestamp":1663074276000},"page":"328-332","source":"Crossref","is-referenced-by-count":1,"title":["Intraoperative Transesophageal Echo-Doppler Evaluation of Stentless Aortic Xenografts. Incidence and Significance of Moderate Gradients"],"prefix":"10.1177","volume":"10","author":[{"given":"G.","family":"Morocutti","sequence":"first","affiliation":[{"name":"Department of Cardiovascular Sciences, General Hospital \u201cS. Maria delta Misericordia\u201d, Udine, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.","family":"Gelsomino","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Sciences, General Hospital \u201cS. Maria delta Misericordia\u201d, Udine, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L.","family":"Spedicato","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Sciences, General Hospital \u201cS. Maria delta Misericordia\u201d, Udine, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R.","family":"Frassani","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Sciences, General Hospital \u201cS. Maria delta Misericordia\u201d, Udine, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"G.","family":"Bernardi","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Sciences, General Hospital \u201cS. 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