title: Atrioventricular reciprocal rhythm and chronic reciprocating tachycardia in a newborn infant with concealed Wolff-Parkinson-White syndrome.
abstract: A case of atrioventricular reciprocal rhythm and chronic reciprocating tachycardia in a newborn infant is presented. Electrophysiological studies suggest that these rhythm disturbances are related to the presence of a right-sided atrioventricular accessory pathway capable only of retrograde conduction (concealed Wolff-Parkinson-White syndrome). The technique of recording the sequence of atrial activation during the tachycardia is described and its clinical importance emphasised.
mesh_terms: D006328:Cardiac Catheterization; D004077:Digoxin / Q000627:therapeutic use; D004594:Electrophysiology; D006327:Heart Block / Q000188:drug therapy / Q000209:etiology*; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000503:physiopathology*; D008297:Male; D011433:Propranolol / Q000627:therapeutic use; D013610:Tachycardia / Q000188:drug therapy / Q000209:etiology*; D014927:Wolff-Parkinson-White Syndrome / Q000150:complications*
chemical_list: D004077:Digoxin; D011433:Propranolol