{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T19:03:32Z","timestamp":1760123012837,"version":"3.37.3"},"reference-count":22,"publisher":"Oxford University Press (OUP)","issue":"5","license":[{"start":{"date-parts":[[2020,8,26]],"date-time":"2020-08-26T00:00:00Z","timestamp":1598400000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,11,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>OBJECTIVES<\/jats:title><jats:p\/><jats:p>Atrioventricular valve replacement in small children is associated with high morbidity and mortality. There are no prostheses available with a diameter \u02c215\u2009mm. This study reports our initial experience with a cylinder valve for mitral and tricuspid valve replacement in infants and small children.<\/jats:p><\/jats:sec><jats:sec><jats:title>METHODS<\/jats:title><jats:p>Our cylinder valve was hand-made for patients requiring atrioventricuclar valve replacement with an annulus of &amp;lt;15\u2009mm. A 12-mm Contegra valve was prepared and placed inside a 14-mm Gore-Tex tube graft and sutured on both extremities.<\/jats:p><\/jats:sec><jats:sec><jats:title>RESULTS<\/jats:title><jats:p>Eight patients were included, with a median age of 6.9\u2009months (range 1\u2009day to 38\u2009months). Four had mitral and 4 had tricuspid valve replacement. All implants were technically successful, with no significant regurgitation, no stenosis and no left ventricular outflow tract obstruction. There were 3 early deaths from low cardiac output, in patients with significant associated lesions (severe neonatal Ebstein\u2019s, pulmonary artery-intact ventricular septum, biventricular conversion from Norwood stage 1). Two patients required early reintervention: 1 for balloon dilatation for stenosis and 1 for reoperation for paravalvular leak. During follow-up, 2 patients had mitral valve replacement with a 16-mm mechanical valve at 9 and 20\u2009months from the cylinder valve implantation. The remaining 2 patients are alive and well 2\u2009years and 2\u2009months after the procedure.<\/jats:p><\/jats:sec><jats:sec><jats:title>CONCLUSIONS<\/jats:title><jats:p>Cylinder valve replacement of atrioventricular valves was feasible without any technical issues. It was successful in getting out of a difficult situation and allows for somatic growth and implantation of a reasonably-sized mechanical prosthesis on the annulus.<\/jats:p><\/jats:sec>","DOI":"10.1093\/ejcts\/ezaa196","type":"journal-article","created":{"date-parts":[[2020,5,6]],"date-time":"2020-05-06T19:16:09Z","timestamp":1588792569000},"page":"964-968","source":"Crossref","is-referenced-by-count":5,"title":["Cylinder mitral and tricuspid valve replacement in neonates and small children"],"prefix":"10.1093","volume":"58","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1768-8433","authenticated-orcid":false,"given":"Patrick O","family":"Myers","sequence":"first","affiliation":[{"name":"Division of Cardiac Surgery, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0928-9472","authenticated-orcid":false,"given":"Hitendu","family":"Dave","sequence":"additional","affiliation":[{"name":"Division of Cardiac Surgery, Zurich Children\u2019s University Hospital, Zurich, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6635-2610","authenticated-orcid":false,"given":"Oliver","family":"Kretschmar","sequence":"additional","affiliation":[{"name":"Division of Pediatric Cardiology, Zurich Children\u2019s University Hospital, Zurich, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tornike","family":"Sologashvili","sequence":"additional","affiliation":[{"name":"Division of Cardiac Surgery, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland"},{"name":"Division of Cardiac Surgery, Geneva University Hospitals, Geneva, 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