長いQTシンドローム 長いQTシンドローム 328世帯を対象とした長期的な研究
A J Moss1, P J Schwartz, R S Crampton
1Department of Medicine, University of Rochester School of Medicine and Dentistry, N.Y.
Circulation
|September 11, 1991
まとめ
ロングQTシンドローム (LQTS) の患者,特にプロンバンドは,昏睡や死亡のリスクが高い. 主要なリスク要因には,QTc間隔,前回の心臓発作,心拍数などがあり,臨床管理の指針となっています.
科学分野:
- 心臓病学 心臓病学
- 遺伝学 遺伝学とは
- クリニカル・メディシン 臨床医学
背景:
- ロングQT症候群 (Long QT Syndrome, LQTS) は,ECGでQT間隔が長くなることが特徴である珍しい家族性疾患である.
- 室内タキアリズム,昏睡,急性心臓死を引き起こす傾向があります.
研究 の 目的:
- LQTSを持つ個人の臨床的特徴と長期的なアウトカムを調査する.
- LQTS患者の昏睡と死亡の危険因子を特定するために.
主な方法:
- 特定されたLQTS症例を有する328の家族から3,343人の個人を対象とした前向きな研究.
- 臨床データ,心電図パラメータ (QTc),心拍数,心臓病歴の分析.
主要な成果:
- プロバンドはより若く,より頻繁に女性であり,気絶,心停止,および特定のEKGの発見率が高かった (QTc ≥0.50 sec1/2).
- アリスモジェニック・シンコペはしばしば興奮によって引き起こされ,エピソードは時には発作として誤って診断された.
- 12歳までに,プロバンドの50%が昏睡や死亡を経験しました. プロバンドの入学後の事件率は,他の家族よりも著しく高かった.
結論:
- QTc間隔,心臓病歴,心拍数は,LQTSで50歳未満の昏睡や死亡の独立した予測要因です.
- この研究では,主要な臨床的特徴,危険因子,およびLQTSの自然な経過を明らかにしています.
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