Two Cases of 2:1 Atrioventricular Block in Infants with Idiopathic Long QT Syndrome
Journal of the Korean Pediatric Society
; : 1317-1321, 1999.
Article
em Ko
| WPRIM
| ID: wpr-28261
Biblioteca responsável:
WPRO
ABSTRACT
Idiopathic long QT syndrome(LQTS) is an important cause of syncope, seizures, serious ventricular arrhythmias and sudden death in children. The abnormalities of AV conduction such as 2:1 AV block in children with LQTS is rarely reported. We reported two cases of 2:1 atrioventricualr block in infants with LQTS. Patient 1, a female newborn, revealed bradycardia(60 beats/min) and QTc of 0.65sec with 2:1 AV block at birth. She died of polymorphic ventricular tachycardia at 26days of age. Patient 2, a 2-month-old female, exhibited prolonged QT interval (QTc=0.54sec), 2:1 AV block, and intermittent Wenckebach conduction. After she received propranolol, sinus rhythm with 1:1 AV conduction and QTc of 0.5sec was seen. After a follow-up of 6 months, the infant is still doing well.
Palavras-chave
Texto completo:
1
Base de dados:
WPRIM
Assunto principal:
Arritmias Cardíacas
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Propranolol
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Convulsões
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Síncope
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Síndrome do QT Longo
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Seguimentos
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Taquicardia Ventricular
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Morte Súbita
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Parto
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Bloqueio Atrioventricular
Tipo de estudo:
Observational_studies
/
Prognostic_studies
Limite:
Child
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Female
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Humans
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Infant
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Newborn
Idioma:
Ko
Revista:
Journal of the Korean Pediatric Society
Ano de publicação:
1999
Tipo de documento:
Article