{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,3,3]],"date-time":"2025-03-03T05:56:12Z","timestamp":1740981372949,"version":"3.38.0"},"reference-count":16,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[1996,6,1]],"date-time":"1996-06-01T00:00:00Z","timestamp":833587200000},"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":[[1996,6]]},"abstract":"<jats:p> Improvements in cryopreservation techniques have made possible excellent long-term results using aortic valve allografts. Few studies, however, have examined the echocardiographic characteristics of allograft aortic valves and postoperative valve function. Aortic allograft function was eveluated in 16 patients by intraoperative transoesophageal echocardiography, postoperative catheterization, and angiography. The mean(s.d.) coaptation zone length of the allograft leaflet was significantly greater (7.3(1.4) mm) than that of the normal aortic valve (3.2(0.8) mm) (P &lt; 0.01). No regurgitation was noted in any patients with coaptation zone length of 7\u201311 mm (P &lt; 0.01). The increment of the leaflet coaptation zone length did not produce a significant pressure gradient during exercise and appeared to be one of the important mechanisms for the prevention of postoperative aortic regurgitation, because commissural orientations may be distorted in the new aortic position. This finding is consistent with the report that allografts with the largest diameter implantable in the recipient annulus should be selected for use. Copyright \u00a9 1996 The International Society for Cardiovascular Surgery. <\/jats:p>","DOI":"10.1177\/096721099600400304","type":"journal-article","created":{"date-parts":[[2024,9,21]],"date-time":"2024-09-21T20:18:49Z","timestamp":1726949929000},"page":"293-298","source":"Crossref","is-referenced-by-count":0,"title":["Echocardiographic Characteristics of the Cryopreserved Allograft Aortic Valve Replacement Assessed by Intraoperative Transoesophageal Echocardiography"],"prefix":"10.1177","volume":"4","author":[{"given":"J.","family":"Hasegawa","sequence":"first","affiliation":[{"name":"Department of Surgery III, Nara Medical College, 840 Shijo-cho, Kashihara, Nara, 634 Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.","family":"Kitamura","sequence":"additional","affiliation":[{"name":"Department of Surgery III, Nara Medical College, 840 Shijo-cho, Kashihara, Nara, 634 Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"T.","family":"Kawata","sequence":"additional","affiliation":[{"name":"Department of Surgery III, Nara Medical College, 840 Shijo-cho, Kashihara, Nara, 634 Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K.","family":"Kawachi","sequence":"additional","affiliation":[{"name":"Department of Surgery III, Nara Medical College, 840 Shijo-cho, Kashihara, Nara, 634 Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K.","family":"Niwaya","sequence":"additional","affiliation":[{"name":"Department of Surgery III, Nara Medical College, 840 Shijo-cho, Kashihara, Nara, 634 Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[1996,6,1]]},"reference":[{"key":"bibr1-096721099600400304","first-page":"534","volume":"6","author":"O'Brien MF","year":"1991","journal-title":"Allograft aortic valve replacement. Long-term comparative clinical analysis of the viable cryopreserved and antibiotic 4\u00b0C stored valves"},{"key":"bibr2-096721099600400304","first-page":"154","volume":"106","author":"Kirklin JK","year":"1993","journal-title":"Long-term function of cryopreserved aortic homografts: A ten-year study"},{"key":"bibr3-096721099600400304","first-page":"114","volume":"60","author":"Niwaya K","year":"1995","journal-title":"The effect of warm ischemia and cryopreservation on cell viability of human allograft valves"},{"key":"bibr4-096721099600400304","first-page":"1335","volume":"41","author":"Niwaya K","year":"1993","journal-title":"Cell viability assessment of cold-preserved (4\u00b0C) and cryopreserved (\u2212196\u00b0C) allograft valves by flowcytometric analysis"},{"key":"bibr5-096721099600400304","first-page":"228","volume":"56","author":"Doty DB","year":"1993","journal-title":"Replacement of the aortic valve with cryopreserved aortic allograft"},{"key":"bibr6-096721099600400304","first-page":"391","volume":"34","author":"Ross J","year":"1966","journal-title":"Jr. Considerations regarding the technique for transseptal left heart catheterization"},{"key":"bibr7-096721099600400304","first-page":"437","volume":"14","author":"Sellers RD","year":"1964","journal-title":"Left retrograde cardioangiography in acquired cardiac disease: Technic, indications and interpretation of 700 cases"},{"key":"bibr8-096721099600400304","first-page":"1466","volume":"63","author":"Jaffe WM","year":"1989","journal-title":"Doppler echocardiography in the assessment of the homograft aortic valve"},{"key":"bibr9-096721099600400304","first-page":"76","volume":"84","author":"Moscucci M","year":"1991","journal-title":"Prediction of aortic annulus diameter by two-dimensional echocardiography. Application in the preoperative selection and preparation of homograft aortic valves"},{"key":"bibr10-096721099600400304","first-page":"545","volume":"101","author":"Bartzokis T","year":"1991","journal-title":"Freehand allograft aortic valve replacement and aortic root replacement"},{"key":"bibr11-096721099600400304","first-page":"462","volume":"6","author":"Christie GW","year":"1991","journal-title":"Identification of a failure mode of the antibiotic sterilized aortic allograft after 10 years: Implications for their long term survival"},{"key":"bibr12-096721099600400304","first-page":"871","volume":"35","author":"Swanson WM","year":"1974","journal-title":"Dimensions and geometric relationship of the human aortic valves as a function of pressure"},{"key":"bibr13-096721099600400304","first-page":"847","volume":"52","author":"Barratt-Boyes BG","year":"1965","journal-title":"A method for preparing and inserting a homograft aortic valve"},{"key":"bibr14-096721099600400304","doi-asserted-by":"publisher","DOI":"10.1007\/978-1-4612-3568-2_6"},{"key":"bibr15-096721099600400304","first-page":"154","volume":"52","author":"Ross D","year":"1991","journal-title":"Technique of aortic valve replacement with a homograft: Orthotopic replacement"},{"key":"bibr16-096721099600400304","first-page":"193","volume":"1","author":"Bailey WW","year":"1987","journal-title":"A modified free hand technique for homograft aortic valve replacement"}],"container-title":["Cardiovascular Surgery"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/096721099600400304","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/096721099600400304","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,3,2]],"date-time":"2025-03-02T23:39:15Z","timestamp":1740958755000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/096721099600400304"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1996,6]]},"references-count":16,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1996,6]]}},"alternative-id":["10.1177\/096721099600400304"],"URL":"https:\/\/doi.org\/10.1177\/096721099600400304","relation":{},"ISSN":["0967-2109"],"issn-type":[{"type":"print","value":"0967-2109"}],"subject":[],"published":{"date-parts":[[1996,6]]}}}