Cor triatriatum dexter diagnosed by transesophageal echocardiography

Cor Triatriatum Dexter with Noncompaction of Right Ventricle and Complete Heart Block: An Unholy Trinity

Cor triatriatum (CT) or a triatrial heart is a rare congenital anomaly in which one of the atrial chambers is divided by a fibromuscular membrane. Of the two variants, CT dexter (right-sided CT) is still further rare than CT sinister (left-sided CT). Although CT sinister presents with features of left heart obstructive disease mimicking mitral stenosis, CT dexter is usually asymptomatic and is found incidentally on imaging. Here, we present a patient with an unusual case of complete heart block who was found to have CT dexter along with right ventricular noncompaction on imaging.

Cor triatriatum dexter: A rare cause of childhood cyanosis

Cor triatriatum dexter is a rare congenital heart anomaly where the right atrium is divided into two chambers by a membrane. We report a boy who had persistent mild cyanosis and diagnosed to have cor triatriatum dexter with secundum atrial septal defect by transoesophageal echocardiography. Interestingly, he had persistent mild cyanosis despite insignificant obstruction to the right ventricular inflow and normal pulmonary artery pressure. The pathophysiology, approach to the diagnosis, and mode of treatment are also discussed.

Incidental Finding of Cor Triatriatum in an Asymptomatic Elite Athlete

Cor triatriatum was diagnosed in an asymptomatic professional football player when he underwent cardiovascular evaluation to rule out conditions that can potentially cause sudden cardiac death in the young. Cor triatriatum is a rare congenital anomaly characterized by failure of resorption of common pulmonary vein resulting in division of left atrium into two chambers. Communication between the two divided atrial chambers determines the degree of obstruction. In this particular case, there were two defects in the membrane, which allowed left atrial filling. The filling pressures were not elevated and, hence, the athlete was asymptomatic. The literature review has suggested that cor triatriatum has been incidentally diagnosed in asymptomatic adults and elderly individuals, however, this case demonstrates incidental diagnosis of the condition in an elite athlete capable of performing extreme exertion.