Resumen

CORTES RAMIREZ, Juan Manuel et al. Congenital complete av block: Review and case report. Rev. Mex. Cardiol [online]. 2013, vol.24, n.3, pp.144-146. ISSN 0188-2198.

The atrioventricular block is a delay or interruption of the electrical impulse from the sinusal node, to level of the auriculoventricular nodule is a congenital (BAVC), in one of every 20,000-25,000 born alive. Secondary to an abnormal embryonic development of the node AV, associated with structural cardiac abnormalities or for maternal is immunization with antibodies that cause immunological irreversible damage in the fetal heart tissue, by inflammation and subsequent fibrosis. The factors of worst prognosis are: Coexistence with cardiovascular malformations, heart failure, ventricular frequency below 50 per minute, bradycardia less than 30 per minute during sleep, pacemaker under or changing, long QT. In asymptomatic patient, it is recommended monitoring and follow-up with echocardiography. Indications for permanent pacemaker are: escape rhythm with wide complex, ectopy and ventricular dysfunction, long QT, cardiomegaly and right atrial dilatation.

Palabras llave : Congenital heart disease; congenital complete atrioventricular block; maternal isoimmunization.