title: Reversible symptomatic dilated cardiomyopathy in older children and young adolescents due to primary non-sinus supraventricular tachyarrhythmias.
abstract: Dilated cardiomyopathy (DCM) due to a primary supraventricular tachycardia not originating from the sinus node is not frequently seen in older children or adolescents. However, it is important to recognize this entity as a reversible cause of DCM to avoid costly and inappropriate treatments for these patients. We describe 7 patients who presented with DCM. Five were misdiagnosed as having "sinus" tachycardia secondary to an idiopathic DCM, and 2 were correctly diagnosed as having DCM secondary to an atrial tachycardia. All underwent electrophysiologic treatment of the tachycardia with remission of the DCM.
authors.affiliation: Division of Cardiology, Department of Pediatrics, Children's Hospital of Michigan, Wayne State University, Detroit, MI, USA.
authors.forename: M S
authors.initials: MS
authors.lastname: Horenstein
authors.forename: E
authors.initials: E
authors.lastname: Saarel
authors.forename: M
authors.initials: M
authors.lastname: Dick
authors.forename: P P
authors.initials: PP
authors.lastname: Karpawich
mesh_terms: D000293:Adolescent; D002311:Cardiomyopathy, Dilated / Q000209:etiology* / Q000503:physiopathology / Q000628:therapy; D017115:Catheter Ablation / Q000379:methods; D002648:Child; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac / Q000379:methods*; D005260:Female; D006333:Heart Failure / Q000209:etiology / Q000503:physiopathology / Q000628:therapy; D006801:Humans; D008297:Male; D012074:Remission Induction; D012189:Retrospective Studies; D013617:Tachycardia, Supraventricular / Q000150:complications* / Q000175:diagnosis / Q000628:therapy*; D016277:Ventricular Function, Left / Q000502:physiology