cor triatriatum


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cor tri·at·ri·a·'tum

a heart with three atrial chambers, the left atrium being subdivided by a transverse septum with a single small opening that separates the openings of the pulmonary veins from the mitral valve.
Synonym(s): accessory atrium

cor triatriatum

[kôr trī·ā′trē·ā′tum]
a congenital anomaly caused by failure of resorption of the embryonic common pulmonary vein, resulting in division of the left atrium by a fibromuscular diaphragm, the posterosuperior chamber receiving the pulmonary venous return and the anteroinferior chamber communicating with the left atrial appendage and mitral orifice. The orifice between the two compartments may be reduced or absent, producing pulmonary venous obstruction.

cor tri·at·ri·a·tum

(kōr trī-at-rī-ā'tŭm)
A congenital anomaly characterized by a heart with three atrial chambers, the left atrium being subdivided by a transverse septum with a single small opening that separates the openings of the pulmonary veins from the mitral valve.
References in periodicals archive ?
Cor triatriatum in adults: three new cases and a brief review.
This may lead to increase in the reported cases of cor triatriatum in the literature.
When the cor triatriatum is the only abnormality the clinical findings are very similar to mitral stenosis, because both conditions cause pulmonary hypertension and subsequently elevated pulmonary capillary pressures, pulmonary arterial hypertension and right heart chamber enlargements.
Cor triatriatum sinister remains an uncommon form of congenital heart disease, although it is being diagnosed with increasing frequency in adults due to improvements in diagnostic imaging.
Asymptomatic cor triatriatum incidentally revealed in an elderly patient with mitral stenosis.
Cor triatriatum as a problem of adult heart disease.
Initial presentation of cor triatriatum in a 55 year-old woman.
Rodefeld presented morphologic classification of cor triatriatum as follows: type A1 - ASO proximal to the obstructing membrane; type A2 - ASO distal to the obstructing membrane, type B, dilated coronary sinus that receives all four pulmonary veins; type C - accessory chamber that receives no pulmonary veins (3).
The clinical picture and survival of patients with cor triatriatum in adult depends on the degree of obstruction to pulmonary venous flow and the associated intracardiac defects (1, 4).
Marin-Garcia and Thelenius reported that ASO or patent foramen ovale was present in 70-80% of patients with cor triatriatum (5, 6).
Currently computed tomography scan, magnetic resonance imaging, and 3D-TEE are used for the assessment of cor triatriatum.
Surgical correction of cor triatriatum in adult is a relatively simple and long-term results are very satisfactory.