Cor triatriatrum or divided left atrium presenting as mitral stenosis in an adult patient

in Echo Research and Practice
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  • 1 J Cilliers, Medical Sciences, University of Stellenbosch, Stellenbosch, 7602, South Africa
  • 2 A Pecoraro, Medicine, Division of Cardiology , Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, 7599, South Africa
  • 3 J Janson, Cardiothoracic Surgery, Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, South Africa

Correspondence: Jacob Cilliers, Email: jdcilliers123@gmail.com

We evaluated a 26yr old male with dyspnoea and clinical evidence of MS. To our surprise, echocardiographic evaluation revealed a primum ASD with normal function of the left and right atrioventricular (AV) valve. A left sided supra-valvular ridge or divided left atrium was identified with peak and mean gradients of 43/21mmHg respectively. The primum ASD was repaired with a pericardial patch and the supraventricular ridge causing left ventricular inflow obstruction was resected. The patient was discharged five days after surgery and has remained asymptomatic during routine follow up. Post-operative echocardiography revealed successful surgery with normal diastolic gradients of the left AV valve.

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    British Society of Echocardiography

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