Cor Triatriatum Sinister Identified after New Onset Atrial Fibrillation in an Elderly Man

A 73-year-old man with new onset atrial fibrillation with rapid ventricular response underwent transthoracic echocardiography that revealed an echogenic linear structure along the left atrium, suggestive of cor triatriatum sinister (CTS). CTS was confirmed with transesophageal echocardiography which...

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Main Authors: Ignacio A. Zepeda, Peter Morcos, Luis R. Castellanos
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:Case Reports in Medicine
Online Access:http://dx.doi.org/10.1155/2014/674018
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author Ignacio A. Zepeda
Peter Morcos
Luis R. Castellanos
author_facet Ignacio A. Zepeda
Peter Morcos
Luis R. Castellanos
author_sort Ignacio A. Zepeda
collection DOAJ
description A 73-year-old man with new onset atrial fibrillation with rapid ventricular response underwent transthoracic echocardiography that revealed an echogenic linear structure along the left atrium, suggestive of cor triatriatum sinister (CTS). CTS was confirmed with transesophageal echocardiography which demonstrated a proximal accessory atrium receiving pulmonary venous flow separated from a distal true atrium by a fibromuscular membrane with a large fenestration allowing flow between the chambers. In CTS, the left atrium is divided into proximal and distal chambers by a fenestrated fibromuscular septum. This cardiac anomaly accounts for 0.1% of cases of congenital heart disease and rarely presents in adults. CTS is primarily diagnosed with echocardiography and is associated with left atrial enlargement and development of atrial fibrillation. Treatment options depend on size of the communication between proximal and distal chambers, the gradient across the membrane, and the position of pulmonary veins. In some instances, surgical resection of the membrane that divides the left atrium is warranted.
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spelling doaj-art-0b76d4c5532b4c28974eec3e44ea109e2025-08-20T03:54:16ZengWileyCase Reports in Medicine1687-96271687-96352014-01-01201410.1155/2014/674018674018Cor Triatriatum Sinister Identified after New Onset Atrial Fibrillation in an Elderly ManIgnacio A. Zepeda0Peter Morcos1Luis R. Castellanos2Department of Medicine, University of California San Diego, La Jolla, CA 92161, USADepartment of Medicine, University of California San Diego, La Jolla, CA 92161, USADepartment of Medicine, University of California San Diego, La Jolla, CA 92161, USAA 73-year-old man with new onset atrial fibrillation with rapid ventricular response underwent transthoracic echocardiography that revealed an echogenic linear structure along the left atrium, suggestive of cor triatriatum sinister (CTS). CTS was confirmed with transesophageal echocardiography which demonstrated a proximal accessory atrium receiving pulmonary venous flow separated from a distal true atrium by a fibromuscular membrane with a large fenestration allowing flow between the chambers. In CTS, the left atrium is divided into proximal and distal chambers by a fenestrated fibromuscular septum. This cardiac anomaly accounts for 0.1% of cases of congenital heart disease and rarely presents in adults. CTS is primarily diagnosed with echocardiography and is associated with left atrial enlargement and development of atrial fibrillation. Treatment options depend on size of the communication between proximal and distal chambers, the gradient across the membrane, and the position of pulmonary veins. In some instances, surgical resection of the membrane that divides the left atrium is warranted.http://dx.doi.org/10.1155/2014/674018
spellingShingle Ignacio A. Zepeda
Peter Morcos
Luis R. Castellanos
Cor Triatriatum Sinister Identified after New Onset Atrial Fibrillation in an Elderly Man
Case Reports in Medicine
title Cor Triatriatum Sinister Identified after New Onset Atrial Fibrillation in an Elderly Man
title_full Cor Triatriatum Sinister Identified after New Onset Atrial Fibrillation in an Elderly Man
title_fullStr Cor Triatriatum Sinister Identified after New Onset Atrial Fibrillation in an Elderly Man
title_full_unstemmed Cor Triatriatum Sinister Identified after New Onset Atrial Fibrillation in an Elderly Man
title_short Cor Triatriatum Sinister Identified after New Onset Atrial Fibrillation in an Elderly Man
title_sort cor triatriatum sinister identified after new onset atrial fibrillation in an elderly man
url http://dx.doi.org/10.1155/2014/674018
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AT petermorcos cortriatriatumsinisteridentifiedafternewonsetatrialfibrillationinanelderlyman
AT luisrcastellanos cortriatriatumsinisteridentifiedafternewonsetatrialfibrillationinanelderlyman