ブラキオラジアル遅延:大動脈狭窄症の重度の新しい臨床指標
1Department of Medicine, Worthing Hospital, UK.
Lancet (London, England)
|May 19, 1990
まとめ
腕脈と半径脈の間の感知可能な遅延は,重度の大動脈狭窄を示します. この発見は,症状または心不全が起こる前に検出され,早期診断を助けます.
科学分野:
- 心臓病学 心臓病学
- 血管生理学 血管生理学
背景:
- 大動脈狭窄は,大動脈弁の狭窄であり,左心室からの血流を制限します.
- 大動脈狭窄の重度の評価は,適切な介入と管理に不可欠です.
- パルス波形分析は,心血管の血液動力学に関する洞察を提供することができます.
研究 の 目的:
- 重度の大動脈狭窄症の患者における腕脈と半径脈の間の遅延の存在と重要性を調査する.
- この脈拍の遅延が重度の大動脈狭窄症の臨床的に検出可能なマーカーであるかどうかを判断する.
- 重度の大動脈狭窄患者の脈動遅延を,正常な被験者と,低心電量を持つ被験者と比較するために.
主な方法:
- 患者の評価中に脈拍のタイミングの臨床観察.
- 腕脈と半径脈の間の時間遅延の定量的な測定.
- 患者のグループと健康なボランティアの間の脈拍遅延測定の比較.
主要な成果:
- 腕脈と半径脈の間の臨床的に検出可能な遅延は,重症または症状のある大動脈狭窄症の患者で観察されました.
- 重度の大動脈狭窄の平均脈拍遅延は53.5msであり,正常なボランティア (22.6ms) よりも大幅に長かった.
- この脈拍の遅延の増加は,心臓の出力量が低い患者よりも著しく長かった.
結論:
- 腕動脈と半径動脈の間のパルス通過時間の遅延は,重度の大動脈狭窄の臨床的に検出可能な兆候です.
- この発見は,左心房不全または症状が発症する前に特定することができます.
- 脈拍の遅延は,重度の大動脈狭窄の早期の非侵襲的指標として機能する可能性があります.
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