重度の甲状腺機能低下症および粘液水腫性昏睡の入院患者における心室機能
Joaquin Lado-Abeal1, Irsa Munir2, Khalid Al-Zubaidi1
1Division of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, University of California Davis Medical Center and School of Medicine, California, USA.
The Journal of clinical endocrinology and metabolism
|January 30, 2026
まとめ
重度の甲状腺機能低下症は、収縮期および拡張期機能、心筋変形に影響を与える心機能不全を頻繁に引き起こします。これらの異常にもかかわらず、重度の甲状腺機能低下症患者の短期死亡率は低いままです。
科学分野:
- 循環器学; 内分泌学; 医用画像
背景:
- 甲状腺ホルモンのヒト心機能への変力作用の臨床的意義は完全には理解されていません。重度の甲状腺機能低下症および粘液水腫性昏睡は心機能に著しい影響を与える可能性があります。
研究 の 目的:
- 重度の甲状腺機能低下症および粘液水腫性昏睡患者の心室機能を評価すること。心エコー検査を用いて収縮期および拡張期機能、心筋変形を評価すること。
主な方法:
- 重度の甲状腺機能低下症で集中治療室に入院した成人患者112名を対象とした多施設共同後ろ向き横断研究。経胸壁心エコー検査(TTE)および斑点追跡心エコー検査(STE)を用いて、左室(LV)および右室(RV)機能、全体縦方向ひずみ(GLS)を分析しました。
主要な成果:
- 患者の68.2%で左室GLSの低下が認められ、34.0%で右室GLSの低下が認められました。左室駆出率(LVEF)の低下は37.5%に、左室拡張機能不全は66.7%に認められました。心血管系薬剤は心エコー所見と関連していましたが、これは交絡因子による可能性が高いです。
結論:
- 重度の甲状腺機能低下症は、広範な収縮期および拡張期心室機能不全、心筋変形の低下と関連しています。観察された薬剤と心異常との関連は、直接的な薬物効果ではなく、根本的な患者の状態によるものである可能性があります。この患者コホートでは、著しい心異常にもかかわらず、短期死亡率は低かった。
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