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LA8G.0 Divided left atrium

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

A congenital cardiac malformation in which there is a partition that divides the left atrium into a posterosuperior chamber that receives some or all of the pulmonary veins and an antero-inferior chamber that communicates with the left atrial appendage and atrioventricular junction (usually the mitral valve). Additional information: in differentiating 'Divided left atrium' from 'Congenital supravalvar or intravalvar mitral ring', in the latter, the antero-inferior compartment contains only the mitral valvar orifice.

synonyms

• Divided left atrium
• Cor triatriatum sinistrum
• Left cor triatriatum
• Cor triatriatum sinister
• left triatrial heart

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