慢性オーソスタティック不耐性における神経循環器の異常
David S Goldstein1, Basil Eldadah, Courtney Holmes
1Clinical Neurocardiology Section, NINDS, National Institutes of Health, Bethesda, Md, USA. goldsteind@ninds.nih.gov
Circulation
|February 9, 2005
まとめ
姿勢性低心筋症候群 (POTS) の患者は,休息時に心拍数増加と交感性神経系の活動を示す. 神経性心筋梗塞 (NCS) 患者には前腕の血管収縮が認められるが,交感性活性化は認められない.
科学分野:
- 心臓病学 心臓病学
- 自律神経系の研究
- 臨床生理学 臨床生理学とは
背景:
- 慢性正静性不耐症 (COI) は,姿勢性心拍動症候群 (POTS) を有する患者,神経性心筋症候群 (NCS) を有する患者に影響します.
- COI患者の横横の休息中の神経循環異常を調査することは,これらの状態を理解するために重要です.
研究 の 目的:
- COI,POTS,またはNCSの患者が,仰向け休息中に明確な神経循環器の異常があるかどうかを判断する.
- POTS,NCS,および健康な個体間のレパインヘモダイナミックおよび神経ホルモンプロフィールを比較するために.
主な方法:
- COI (POTSまたはNCS) の成人患者および健康なボランティアは,プラズマカテキオラミンと前腕の血動力学を測定した.
- グループ間の心拍数,動脈中のノルエピネフリンとエピネフリンの平均値,前腕の血管抵抗の比較.
主要な成果:
- POTSグループは,NCSと対照群と比較して,休息時の心拍数が著しく上昇した.
- POTSの患者は,NCSと対照群の両方よりも血のノルエピネフリンとエピネフリン濃度が高かった.
- NCSの患者は,POTSグループよりも,仰向け休息中に前腕の血管抵抗性が高かった.
結論:
- 姿勢性短心症候群 (POTS) は,休息時の心拍数と交感神経系と腎上腺外流の増加によって特徴付けられます.
- 交感性アウトフローの上昇は,POTSで観察される特徴的な心拍動脈に寄与する可能性があります.
- 神経性心筋梗塞 (NCS) は,前腕の静止状態での静脈収縮を含み,交感神経または腎上腺膜の活性化を示す証拠はありません.
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