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動脈疾患における下肢における数値シストリック圧力に対する温度の影響
1Department of Physiology, University of Manitoba, Winnipeg, Canada.
Circulation
|March 1, 1992
まとめ
足の指の圧力測定は,外周動脈疾患の評価に不可欠です. 測定中に指の最適な温度を維持することで,測定の精度が大幅に向上し,傷の治癒の予測が良くなり,切断のリスクが軽減されます.
科学分野:
- 血管医学 血管医学とは
- ポディアトリー ( Podiatry) とは
- 外周動脈疾患の診断 外周動脈疾患の診断
背景:
- 足の指の圧力は,皮膚病変の治癒,截肢のリスク,および死亡率の重要な指標です.
- 足首の圧力とは異なり,足指の圧力は,足首の血管の不圧縮性によってあまり影響を受けません.
- デジタル圧力は,環境温度変動によって影響を受けます.
研究 の 目的:
- 制御された指の温度が指の圧力測定に与える影響を調査する.
- 足の指の圧力評価を正確にするために最適な温度条件を決定します.
- 周辺動脈疾患における指の圧力の診断的有用性を高めるために.
主な方法:
- 常時条件下での足の指の圧力を,制御温度 (10°C,30°C,27°C~39°C) と対照的に77本の肢体で比較した.
- 足の指とカフの温度を均衡させるために,水浸透したカフを7分間使用しました.
- 温度均衡の際に回路栓で血流が遮断される.
主要な成果:
- 10°C (34±4 mm Hg) の指の平均気圧は,通常の測定 (57±4 mm Hg) と30°C (69±4 mm Hg) よりも著しく低かった.
- 足の指の圧力は,温度が27°Cから39°C (p<0.01) になるにつれて徐々に増加した.
- 30°Cで,指の指圧は,指の初期温度が30°C以下であったときの通常の測定値より高かった (p<0.01).
結論:
- 通常の足の指の圧力測定は,デジタル動脈効果のために,低温で誤って低い可能性があります.
- 最適な指の温度 (36°C-39°C) で,最も高い圧力が得られます.
- 暖かい測定温度により,動脈閉塞の重さを評価し,損傷の治癒を予測する精度が向上します.
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