An (In)Significant Ventricular Septal Defect and/or Double-Chambered Right Ventricle: Are There Any Differences in Diagnosis and Prognosis in Adult Patients?

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A double-chambered right ventricle (DCRV) is an uncommon congenital anomaly: the right ventricle (RV) is divided into two chambers due to the presence of an abnormally located muscular band or anomalous muscle hypertrophy in the subinfundibular part of RV outflow tract, with a variable degree of obstruction. Generally, DCRV is well recognized in childhood and misdiagnosed in adult patients. Transthoracic and/or transesophageal echocardiography are the methods of choice for the diagnosis of DCRV. Due to limitations of echocardiography in adult patients, this entity may be missed, particularly if it presents concomitant with other congenital defects, and therefore additional imaging methods such as MRI or cardiac catheterization are required for a definitive diagnosis.

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