静脈細動のスケーリング指数は,除細動および他の治療のタイミングを導き得る
James J Menegazzi1, Clifton W Callaway, Lawrence D Sherman
1Department of Emergency Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pa, USA. menegazz+@pitt.edu
Circulation
|February 6, 2004
まとめ
室細動 (VF) のスケーリング指数 (ScE) は,治療の成功を予測します. 短期間のVFには即時の反震が効果的ですが,長期間のVF (ScE ≥1.3) では,より良い結果を得るために代替的介入が必要です.
科学分野:
- 心臓病学 心臓病学
- 緊急医療 緊急医療
- バイオメディカルエンジニアリング
背景:
- 室細動 (VF) の波形のスケーリング指数 (ScE) は,VFの持続時間と除細動の成功と相関する.
- 期間が異なるVFの治療方法の比較は,患者のアウトカムを改善するために非常に重要です.
研究 の 目的:
- スケーリング指数 (ScE) によって導かれた,異なる持続時間の心房細動 (VF) の治療のための4つの治療戦略の有効性を比較する.
主な方法:
- 72匹の豚は誘発性VFを受け,特定のSCEレベル (1.10-1.40) まで未治療のまま放置されました.
- 治療には,即時の反衝撃 (IC),心肺蘇生 (CPR) 単独,ショック前薬によるCPR (CPR-D),ショック前CPRによる薬 (ドラッグ+CPR) が含まれていた.
- 自発循環の回復 (ROSC) と1時間の生存率を分析した.
主要な成果:
- 即時の反震 (IC) は,SCEの値が低い場合に効果的であったが,SCEが増加するにつれて成功率は著しく低下した.
- 1.30または1.40のSCEに対するICでROSCは達成されなかった.
- CPRは,SCE1.20グループにおける最初のショックの結果を改善しなかった. ICはSCE1.3および1.4グループにおけるROSCを著しく遅らせた.
結論:
- 短いから中程度のVF持続時間 (低SCE) の場合,即時の反震が有効です.
- 長期にわたるVF (ScE ≥1.3) では,ICは効果がなく,ROSCを遅らせ,代替介入が必要になります.
- ScEは,VFの初期治療戦略を選択するための貴重なツールです.
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