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Fetal Presentation of Long QT Syndrome: Evaluation of Prenatal Risk Factors : A Systematic Review

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Title: Fetal Presentation of Long QT Syndrome: Evaluation of Prenatal Risk Factors : A Systematic Review
Authors: Ishikawa, Satoshi Browse this author
Yamada, Takashi Browse this author →KAKEN DB
Kuwata, Tomoyuki Browse this author
Morikawa, Mamoru Browse this author →KAKEN DB
Yamada, Takahiro Browse this author →KAKEN DB
Matsubara, Shigeki Browse this author
Minakami, Hisanori Browse this author →KAKEN DB
Keywords: Long QT syndrome
Prenatal risk factors
Fetal arrhythmia
antenatal diagnosis
atrioventricular block
fetal bradycardia
Issue Date: Jan-2013
Publisher: Karger
Journal Title: Fetal Diagnosis and Therapy
Volume: 33
Issue: 1
Start Page: 1
End Page: 7
Publisher DOI: 10.1159/000339150
PMID: 22776830
Abstract: Objective: This systematic review evaluated the existence of risk factors for the fetal manifestation of long QT syndrome (LQTS). Methods: Prenatal cardiac findings suggestive of fetal LQTS were studied using 30 English iterature reports extracted from the Pubmed database (1979 to December 2011) using the search terms ‘long QT syndrome’, ‘fetal arrhythmia’ and ‘congenital heart disease’. Results: LQTS ccounted for 15–17% of fetal bradycardias ! 110 bpm among fetuses with a normally structured heart. Of the patients with significant prenatal findings of LQTS, 17–35% exhibited a reduced baseline fetal heart rate (FHR) of 110–120 bpm on electronic cardiotocography. Other prenatal signs were sinus or intermittent bradycardia ! 110 bpm arising from atrioventricular block, tachyarrhythmias, pleural effusion and hydrops. More than 30% of Japanese infants with LQTS born at or after the mid-1980s exhibited the above-mentioned in utero signs. Conclusions: Fetal factors including a slightly reduced baseline FHR of 110–120 bpm, bradycardia ! 110 bpm, tachyarrhythmias or clinical signs of heart failure, such as pleural effusion and hydrops, were associated with a higher frequency of LQTS. The use of these signs may help to increase the perinatal diagnosis of LQTS.
Type: article (author version)
Appears in Collections:医学院・医学研究院 (Graduate School of Medicine / Faculty of Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 水上 尚典

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