{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,15]],"date-time":"2025-10-15T17:43:25Z","timestamp":1760550205655,"version":"3.41.0"},"reference-count":12,"publisher":"BMJ","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Reports"],"accepted":{"date-parts":[[2017,1,11]]},"abstract":"<jats:p>We present a rather unusual cause for syncope associated with atrial tachycardia. A man aged 39 years presented with an episode of syncope and narrow complex tachycardia. Further investigations, including transoesophageal echocardiography, identified cor triatriatum sinistrum (CTS), a rare congenital abnormality characterised by the atrium being divided by a fibrous membrane. Although it is rare, there has been an increase in diagnosis due to developments in diagnostic imaging techniques. Symptoms are related to the size of fenestrations within the fibrous membrane. Presenting symptoms can mimic those seen in mitral stenosis. It is a condition that can occur in isolation, but it can also be associated with other cardiac abnormalities such as an atrial septal defect (ASD) (as in this case). Surgery is the definitive treatment (this man had surgical repair of CTS and closure of ASD) and should be considered at any age if there are any associated symptoms or complications.<\/jats:p>","DOI":"10.1136\/bcr-2016-218395","type":"journal-article","created":{"date-parts":[[2017,2,14]],"date-time":"2017-02-14T15:45:18Z","timestamp":1487087118000},"page":"bcr2016218395","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":3,"title":["Cor triatriatum sinistrum: presentation of syncope and atrial tachycardia"],"prefix":"10.1136","volume":"2017","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4109-0810","authenticated-orcid":false,"given":"Malcolm","family":"Avari","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sunil","family":"Nair","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zofia","family":"Kozlowska","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Samer","family":"Nashef","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2017,2,14]]},"reference":[{"key":"2025042705250357000_2017.feb14_1.bcr2016218395.1","doi-asserted-by":"publisher","DOI":"10.1016\/S0828-282X(10)70418-9"},{"key":"2025042705250357000_2017.feb14_1.bcr2016218395.2","doi-asserted-by":"publisher","DOI":"10.1136\/heart.89.10.e26"},{"key":"2025042705250357000_2017.feb14_1.bcr2016218395.3","first-page":"206","article-title":"Cor triatriatum in adults: three new cases and a brief review","volume":"26","author":"Chen","year":"1999","journal-title":"Tex Heart Inst J"},{"key":"2025042705250357000_2017.feb14_1.bcr2016218395.4","doi-asserted-by":"crossref","first-page":"83","DOI":"10.1186\/1749-8090-6-83","article-title":"Cor triatriatum presenting as heart failure with reduced ejection fraction: a case report","volume":"6","author":"Kokotsakis","year":"2011","journal-title":"J Cardiothorac Surg"},{"key":"2025042705250357000_2017.feb14_1.bcr2016218395.5","doi-asserted-by":"crossref","first-page":"84","DOI":"10.5083\/ejcm.20424884.21","article-title":"Cor triatriatum sinistrum: classification and imaging modalities","volume":"1","author":"Nassar","year":"2011","journal-title":"Eur J Cardiovasc Med"},{"key":"2025042705250357000_2017.feb14_1.bcr2016218395.6","first-page":"371","article-title":"Unusual malformation of the left atrium: pulmonary sinus","volume":"48","author":"Loeffler","year":"1949","journal-title":"Arch Pathol"},{"key":"2025042705250357000_2017.feb14_1.bcr2016218395.7","doi-asserted-by":"crossref","first-page":"790","DOI":"10.1111\/echo.12547","article-title":"Cor triatriatum sinister: a patient, a review, and some unique findings","volume":"31","author":"Strickland","year":"2014","journal-title":"Echocardiography"},{"key":"2025042705250357000_2017.feb14_1.bcr2016218395.8","doi-asserted-by":"crossref","first-page":"101","DOI":"10.1161\/01.CIR.36.1.101","article-title":"Cor triatriatum. Review of the surgical aspects with a follow-up report on the first patient successfully treated with surgery","volume":"36","author":"Jorgensen","year":"1967","journal-title":"Circulation"},{"key":"2025042705250357000_2017.feb14_1.bcr2016218395.9","doi-asserted-by":"crossref","first-page":"506","DOI":"10.1111\/j.1540-8175.2006.00250.x","article-title":"Diagnosis and surgical correction of cor triatriatum in an adult: combined use of transoesophageal and contrast echocardiography, and a review of literature","volume":"23","author":"Modi","year":"2006","journal-title":"Echocardiography"},{"key":"2025042705250357000_2017.feb14_1.bcr2016218395.10","first-page":"602","article-title":"Cor triatriatum sinister in a 43-year-old man with syncope","volume":"40","author":"Eichhloz","year":"2013","journal-title":"Tex Heart Inst J"},{"key":"2025042705250357000_2017.feb14_1.bcr2016218395.11","doi-asserted-by":"publisher","DOI":"10.1016\/j.athoracsur.2005.04.055"},{"key":"2025042705250357000_2017.feb14_1.bcr2016218395.12","first-page":"185","article-title":"A very rare case of late diagnosis of cor triatriatum sinistrum","volume":"12","author":"Schusterova","year":"2015","journal-title":"J Geriatr Cardiol"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2016-218395","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,6,15]],"date-time":"2025-06-15T10:26:23Z","timestamp":1749983183000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2016-218395"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,2,14]]},"references-count":12,"alternative-id":["10.1136\/bcr-2016-218395"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2016-218395","relation":{},"ISSN":["1757-790X"],"issn-type":[{"type":"electronic","value":"1757-790X"}],"subject":[],"published":{"date-parts":[[2017,2,14]]}}}