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Am J Perinatol 1998; 15(3): 145-147
DOI: 10.1055/s-2007-993915
ORIGINAL ARTICLE

© 1998 by Thieme Medical Publishers, Inc.

Long QT Syndrome Manifested as Fetal Ventricular Tachycardia and Intermittent AV Block

Ming-Tai Lin1 , Mei-Hwan Wu1 , Fon-Jou Hsieh2 , Jou-Kou Wang1 , Ru-Jeng Teng1 , Kou-Inn Yau Tsou1 , Hung-Chi Lue1
  • 1Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan, Republic of China
  • 2Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan, Republic of China
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Publication Date:
04 March 2008 (online)

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ABSTRACT

A case of long QT syndrome diagnosed in the early neonatal period is described. This full-term female baby had intermittent atrioventricular (AV) block and ventricular tachycardia detected antenatally at the gestational age of 26 weeks. Sinus rhythm with prolonged QT interval (QTc = 0.636 sec) was found soon after birth. She developed variable degree of AV block with alternating left and right bundle branch block, which suggested the presence of multilevel AV block. Her mother had no lupus autoantibodies. Auditory brain stem evoked potential was normal. Family study revealed QT prolongation in her grandmother. Her condition improved after pacemaker implantation and oral beta-blocker usage.

Keywords

Long QT - ventricular tachycardia - prenatal diagnosis - sonography