新生児における頻脈性不整脈誘発性心筋症
Neha Dalal1, Anita Singh2, Abhijeet Roy3
1Neonatology, Post Graduate Institute of Child Health, Noida, Uttar Pradesh, India.
BMJ case reports
|December 31, 2025
まとめ
頻脈誘発性心筋症(TIC)は、持続的な速い心拍数によって引き起こされる可逆的な心機能不全です。不整脈の迅速な治療は、新生児であっても正常な心機能を回復させることができます。
科学分野:
- 心臓病学
- 小児心臓病学
- 電気生理学
背景:
- 頻脈誘発性心筋症(TIC)は、持続的な速い心拍数によって引き起こされ、心室機能不全を引き起こします。
- 正確な心拍数の閾値は不明ですが、新生児および乳児では180 bpmを超える心拍数には注意が必要です。
- TICは、心房または心室の頻脈性不整脈に関連することが多い左心室機能不全の認識された原因です。
研究 の 目的:
- 頻脈性不整脈と心不全を呈した新生児の症例を提示すること。
- 満期産新生児における頻脈誘発性心筋症の診断と管理を強調すること。
- 適切な医学的および処置的介入によるTICの可逆性を示すこと。
主な方法:
- 頻脈性不整脈と心不全のプレゼンテーションを伴う満期産新生児の症例報告。
- 管理には、同期カーディオバージョン、非侵襲的呼吸サポート、アデノシンおよびエスモロールの注入が含まれました。
- 経口フロセミドおよびエナラプリルによる長期管理。
主要な成果:
- 新生児は著しい頻脈性不整脈と心不全を呈しました。
- 成功したカーディオバージョンと医学的管理により、安定化に至りました。
- 退院後、乳児は心機能の改善と心腔サイズの正常化を示しました。
結論:
- 頻脈誘発性心筋症は、原因不明の心不全と頻脈性不整脈を呈する新生児で考慮されるべきです。
- TICの管理には、早期認識と介入が重要です。
- この症例は、適時治療によるTICからの完全な回復の可能性を示しています。
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