Electrocardiographic demostration of dual atrioventricular nodal pathways in children

Dual atrioventricular nodal, pathaways, as evaluated by electrocardiography, were found in two children without arrhythmias over a six year period. Although none have developed tachycardia, they have the substrate to develop atrioventricular reentrant tachycardia

Mitral valve prolapse in juvenile thyrotoxicosis

To determine whether there is an association between mitral valve prolapse and juvenile thyrotoxicosis, we studied 13 thyrotoxic patients (3 males , 10 females, ages 8-17 years) by physical examination, chest radiograms, electrocardiograms and echocardiography. Five patients had an apical systolic murmur and two of these had echocardiographic evidence of mitral valve prolapse. The findings of mitral valve prolapse in 15% of the hyperthyroid patients and 1.7% in the control group suggests that this abnormality may be morefrequent in hyperthyroid children. Echocardiograms should be performed in hyperthyroid children who present with an apical systolic murmur

Echocardiography assessment of the right atrioventricular junction in Ebstein's malformation

Echocardiographic evaluation of two infants with Ebstein's malformation of the tricuspid valve revealed an achogenic right atrioventricular junction that gave the impression of a divided right atrial cavity. Imaging of this junction resulted in better assessment of the components of the right heart of this malformation

Cor triatriatum sinister: echocardiographic assessment

Un paciente se presentó para examen con tos y hemoptisis y el exámen físico sugirió hipertensión pulmonar. El ecocardiograma división de la auricula izquierda por una membrana, estableciendo el diagnóstico de cor triatriatum. Los hallazgos físicos y del ultrasonido cardiaco se discuten