ディルティアゼムがヒトの心房小節節の性質に及ぼす速度依存的効果
Circulation
|September 1, 1992
まとめ
ディルティアゼム (diltiazem) とは
科学分野:
- 心臓病学 心臓病学
- 電気生理学 電気生理学
- 薬理学 薬理学とは
背景:
- 心拍数は,抗不律薬の有効性に大きな影響を与えます.
- カルシウムチャネルブロッカーの周波数依存による人間の心房 (AV) 結節特性への影響に関するデータは限られている.
研究 の 目的:
- ヒトにおけるdiltiazemの電気生理学的効果に対する心拍数の影響を調査する.
- AV節関節機能に対するディルチアゼムの周波数依存的作用を理解するために.
主な方法:
- 25人の患者を対象とした電気生理学的研究.
- 様々な心房速度のシヌスノード,心房,AVノード機能の評価.
- 安定した血濃度を達成するために3回の静脈内投与ディルティアゼム投与.
主要な成果:
- ディルチアゼムは,投与量に依存して,ウェンケバッハ周期の長さを増加させました.
- 効果は主にAVノードルパラメータで,シヌスノードや心房機能への影響は最小でした.
- 心房内静脈効果的耐火期 (AVERP) に対するディルチアゼムの効果は,心拍数が速い場合,著しく増加した.
結論:
- ヒトのAVノードル機能に対するディルティアゼムの抑うつ効果は,高度の依存性があります.
- AV結節屈折性に対する速度依存の作用は,上心室動脈不律症におけるディルチアゼムの有効性に寄与する可能性がある.
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