Paroxysmal supraventricular tachycardia in supero-inferior ventricles with intact ventricular septum.

We describe a case with supero-inferior relations of the ventricles in which the atrio-ventricular and the ventriculo-arterial connexions were concordant and the interventricular septum was intact. In this patient there was associated Wolff-Parkinson-White syndrome with paroxysmal supraventricular tachycardia. Positional anomalies of the heart, where there appears to be displacement of ventricular mass in the horizontal plane, add another dimension to the consideration of morphology and nomenclature. They emphasize the need for separate analysis and description of segmental connexions, relations and morphology.