title: [Upgrading to biventricular pacing for dilated cardiomyopathy following right ventricular pacing in a young patient].
abstract: A 2-day-old male infant required a conventional VVI pacemaker for congenital atrioventricular block. Three years later, he developed progressive heart failure due to left ventricular (LV) dysfunction and mitral regurgitation despite optimized medical treatment, and a cardiac resynchronization therapy (CRT) device was implanted. This is the first Portuguese report of CRT in a pediatric patient. One-year echocardiographic follow-up showed that LV shortening fraction had improved and LV end-diastolic dimension and mitral regurgitation had decreased. New York Heart Association class had improved from III-IV to I at 1-year follow-up.
authors.affiliation: Serviço de Cardiologia, Hospital de Santa Cruz - CHLO, Carnaxide, Portugal. p.lopescarmo@gmail.com
authors.forename: Pedro
authors.initials: P
authors.lastname: Carmo
authors.forename: Graça
authors.initials: G
authors.lastname: Nogueira
authors.forename: Rui
authors.initials: R
authors.lastname: Anjos
authors.forename: Pedro
authors.initials: P
authors.lastname: Adragão
authors.forename: Diogo
authors.initials: D
authors.lastname: Cavaco
authors.forename: Regina
authors.initials: R
authors.lastname: Ribeiras
authors.forename: José Pedro
authors.initials: JP
authors.lastname: Neves
authors.forename: Maymone
authors.initials: M
authors.lastname: Martins
mesh_terms: D002304:Cardiac Pacing, Artificial; D058406:Cardiac Resynchronization Therapy; D002311:Cardiomyopathy, Dilated / Q000628:therapy*; D006801:Humans; D007231:Infant, Newborn; D008297:Male