{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,14]],"date-time":"2026-03-14T20:44:06Z","timestamp":1773521046610,"version":"3.50.1"},"reference-count":9,"publisher":"Texas Heart Institute Journal","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2016,12]]},"abstract":"<jats:p>Atrioventricular septal defects represent a class of congenital cardiac malformations that vary in presentation and management strategy depending upon the severity of the particular lesions present. We present the case of a premature neonate who had a partial atrioventricular septal defect and an accessory mitral (or left atrioventricular) valve leaflet. The latter caused severe left ventricular outflow tract obstruction and severely depressed left ventricular function. We found only one other report of this atrioventricular valve abnormality in association with atrioventricular septal defect. To our knowledge, our patient (at a body weight of 1,800 g) is the smallest to survive corrective surgery of an accessory mitral valve leaflet with severe left ventricular outflow tract obstruction. In addition to our patient's case, we discuss the relevant medical literature.<\/jats:p>","DOI":"10.14503\/thij-15-5675","type":"journal-article","created":{"date-parts":[[2016,12,16]],"date-time":"2016-12-16T23:13:42Z","timestamp":1481930022000},"page":"543-545","source":"Crossref","is-referenced-by-count":1,"title":["Accessory Mitral Valve Leaflet Causing Severe Left Ventricular Outflow Tract Obstruction in a Preterm Neonate with a Partial Atrioventricular Septal Defect"],"prefix":"10.14503","volume":"43","author":[{"given":"J. Kevin","family":"Wilkes","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Charles D.","family":"Fraser","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thomas J.","family":"Seery","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"5628","reference":[{"key":"i1526-6702-43-6-543-b1","series-title":"Moss and Adams' heart disease in infants, children and adolescents: including the fetus and young adult","first-page":"691","article-title":"Atrioventricular septal defects","year":"2013","unstructured":"Cetta\n              F\n            , MinichLL, MaleszewskiJJ, DearaniJA, BurkhartHM.\n          Atrioventricular septal defects. In: AllenHD, DriscollDJ, ShaddyRE, FeltesTF, editors. Moss and Adams' heart disease in infants, children and adolescents: including the fetus and young adult. 8th ed. Philadelphia: Lippincott Williams & Wilkins; 2013. p. 691\u2013712."},{"issue":"4","key":"i1526-6702-43-6-543-b2","series-title":"Ann Thorac Surg","first-page":"952","article-title":"Recognition and management of accessory mitral tissue causing severe subaortic stenosis","volume":"57","year":"1994","unstructured":"Ow\n              EP\n            , DeLeonSY, FreemanJE, QuinonesJA, BellTJ, SullivanHJ, PifarreR.\n          Recognition and management of accessory mitral tissue causing severe subaortic stenosis. Ann Thorac Surg1994;57(4):952\u20135."},{"issue":"3","key":"i1526-6702-43-6-543-b3","series-title":"Rev Bras Cir Cardiovasc","first-page":"477","article-title":"Accessory mitral leaflet: an uncommon form of subaortic stenosis [in Portuguese]","volume":"27","year":"2012","unstructured":"Pavione\n              MA\n            , MendoncaJT, SouzaIS, RussoMA.\n          Accessory mitral leaflet: an uncommon form of subaortic stenosis [in Portuguese]. Rev Bras Cir Cardiovasc2012;27(3):477\u201380."},{"issue":"5","key":"i1526-6702-43-6-543-b4","series-title":"Eur Heart J Cardiovasc Imaging","first-page":"489","article-title":"Accessory mitral valve tissue: an updated review of the literature","volume":"15","year":"2014","unstructured":"Manganaro\n              R\n            , ZitoC, KhandheriaBK, Cusma-PiccioneM, Chiara TodaroM, OretoG, \n          et al. Accessory mitral valve tissue: an updated review of the literature. Eur Heart J Cardiovasc Imaging2014;15(5):489\u201397."},{"issue":"4","key":"i1526-6702-43-6-543-b5","series-title":"Thorac Cardiovasc Surg","first-page":"252","article-title":"Accessory mitral valve tissue causing severe subaortic stenosis with dextrocardia in a premature newborn","volume":"47","year":"1999","unstructured":"Bilal\n              MS\n            , OztuncE, BesikciR, BilalS, OzkaraA, OlgaR.\n          Accessory mitral valve tissue causing severe subaortic stenosis with dextrocardia in a premature newborn. Thorac Cardiovasc Surg1999;47(4):252\u20135."},{"issue":"6","key":"i1526-6702-43-6-543-b6","series-title":"Med Sci Monit","first-page":"RA126","article-title":"Postoperative outcome in patients with accessory mitral valve tissue","volume":"9","year":"2003","unstructured":"Prifti\n              E\n            , BonacchiM, BartolozziF, FratiG, LeaccheM, VaniniV.\n          Postoperative outcome in patients with accessory mitral valve tissue. Med Sci Monit2003;9(6):RA126\u201333."},{"issue":"5","key":"i1526-6702-43-6-543-b7","series-title":"J Thorac Cardiovasc Surg","first-page":"697","article-title":"Unusual mitral valve abnormalities complicating surgical repair of endocardial cushion defects","volume":"85","year":"1983","unstructured":"Ilbawi\n              MN\n            , IdrissFS, DeLeonSY, RiggsTW, MusterAJ, BerryTE, PaulMH.\n          Unusual mitral valve abnormalities complicating surgical repair of endocardial cushion defects. J Thorac Cardiovasc Surg1983;85(5):697\u2013704."},{"issue":"3","key":"i1526-6702-43-6-543-b8","series-title":"J Thorac Cardiovasc Surg","first-page":"382","article-title":"Subaortic stenosis due to accessory tissue on the mitral valve","volume":"45","year":"1963","unstructured":"MacLean\n              LD\n            , CulliganJA, KaneLJ.\n          Subaortic stenosis due to accessory tissue on the mitral valve. J Thorac Cardiovasc Surg1963;45(3):382\u20138."},{"issue":"6","key":"i1526-6702-43-6-543-b9","series-title":"Ann Thorac Surg","first-page":"1934","article-title":"Critical subaortic stenosis in a newborn caused by accessory mitral valve tissue","volume":"69","year":"2000","unstructured":"Meyer-Hetling\n              K\n            , Alexi-MeskishviliVV, DahnertI.\n          Critical subaortic stenosis in a newborn caused by accessory mitral valve tissue. Ann Thorac Surg2000;69(6):1934\u20137."}],"container-title":["Texas Heart Institute Journal"],"original-title":[],"link":[{"URL":"https:\/\/thij.kglmeridian.com\/view\/journals\/thij\/43\/6\/article-p543.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/meridian.allenpress.com\/thij\/article-pdf\/43\/6\/543\/1879515\/thij-15-5675.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/thij.kglmeridian.com\/downloadpdf\/journals\/thij\/43\/6\/article-p543.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/thij.kglmeridian.com\/downloadpdf\/journals\/thij\/43\/6\/article-p543.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,11,7]],"date-time":"2024-11-07T15:33:34Z","timestamp":1730993614000},"score":1,"resource":{"primary":{"URL":"https:\/\/thij.kglmeridian.com\/view\/journals\/thij\/43\/6\/article-p543.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,12]]},"references-count":9,"journal-issue":{"issue":"6"},"URL":"https:\/\/doi.org\/10.14503\/thij-15-5675","relation":{},"ISSN":["0730-2347","1526-6702"],"issn-type":[{"value":"0730-2347","type":"print"},{"value":"1526-6702","type":"electronic"}],"subject":[],"published":{"date-parts":[[2016,12]]}}}