甲状腺機能亢進性周期性四肢麻痺:診断および管理に関する考察
Fahad S Alrashedi1, Raghad A Alonazi2
1Internal medicine department, Nephrology section, Ad diriyah hospital, Third riyadh health cluster, Riyadh, Saudi Arabia dr-fsr@hotmail.com.
BMJ case reports
|December 12, 2025
まとめ
甲状腺機能亢進症のまれな合併症である甲状腺機能亢進性周期性四肢麻痺は、カリウム欠乏による突然の脱力を引き起こします。根本的な甲状腺疾患の根本的な治療とカリウム補充により、筋力は効果的に回復しました。
科学分野:
- 内分泌学
- 神経学
- 内科学
背景:
- 甲状腺機能亢進性周期性四肢麻痺(TPP)は、甲状腺機能亢進症のまれで潜在的に生命を脅かす合併症です。
- カリウムの細胞内シフトによる低カリウム血症誘発性の弛緩性麻痺を特徴とします。
研究 の 目的:
- フィリピン系の中年男性におけるTPPの症例を報告すること。
- TPPの診断的特徴と管理を強調すること。
主な方法:
- 患者の提示、臨床所見、および検査結果を詳述した症例報告。
- 管理には、静脈内塩化カリウム、プロプラノロール、およびメチマゾールが含まれました。
主要な成果:
- 患者は急性両下肢の脱力と重度の低カリウム血症(1.7 mmol/L)を呈しました。
- 心電図は洞頻脈、房室ブロック、U波を示しました。
- 甲状腺パネルでは、TSH抑制とFT4/FT3上昇が明らかになりました。
- 治療後24時間以内に筋力は正常化しました。
結論:
- TPPの診断は、酸塩基障害のない低カリウム血症、適切な腎臓のカリウム保持、および特徴的な心電図変化によって支持されます。
- TPPの再発を防ぐためには、迅速なカリウム補充、ベータ遮断、および甲状腺機能亢進症の確定治療が効果的な管理に必要です。
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