%0 Journal Article %T Casos cl赤nicos en Cardiolog赤a (n.o 9): niˋo con soplo sist車lico y alteraci車n electrocardiogr芍fica %A Notario Muˋoz %A C. %A Crespo Marcos %A D. %J Pediatr赤a Atenci車n Primaria %D 2012 %I Asociaci車n Espa?ola de Pediatr赤a de Atenci車n Primaria (AEPap) %R 10.4321/S1139-76322012000100008 %X we continue the series in paediatric cardiology checking frequent reasons for consultation in the paediatric offices of primary care, presenting them in a brief and practical way and trying to show the electrocardiogram usefulness, diagnostic tool available at the primary care office. in this paper we present the case of an 8 years old boy with a systolic cardiac murmur detected in the well child consultation. the way clinical and electrocardiographic findings guide the diagnosis of this patient is discussed. %K first degree atrioventricular block %K pr interval %K atrioventricular conduction. %U http://scielo.isciii.es/scielo.php?script=sci_abstract&pid=S1139-76322012000100008&lng=en&nrm=iso&tlng=en