インプランテブル・カーディオバーター・デフィブリレーター療法を受けた241人の患者でショック発生と生存率
W Grimm1, B T Flores, F E Marchlinski
1Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia.
Circulation
|June 1, 1993
まとめ
臨床的要因は,インプラント可能な心臓変容器-除細動器 (ICD) のショックタイミングと生存に影響を与える. 低射出分子はショックと死亡率を予測しますが,ICD治療は高リスク患者の急性心臓死を効果的に予防します.
科学分野:
- 心臓病学 心臓病学
- 電気生理学 電気生理学
- 医療機器 医療機器について
背景:
- 埋め込み心動除細動器 (ICD) は,生命を脅かす不律症の管理に不可欠です.
- ICDショック発生と患者の生存に影響を与える要因を理解することは,治療の最適化に不可欠です.
研究 の 目的:
- ICD治療を受けている患者のショック発生率と生存に対する臨床特性の影響を調査する.
- この高リスク集団におけるショック発生と死亡率の予測要因を特定する.
主な方法:
- 1982年から1991年の間にICDインプラントを受けた241人の患者の分析.
- 適切なショックと自発的なショックの精算的発生率を評価するために,平均26ヶ月間フォローアップ.
- 臨床的変数の評価,左心室のエジェクション分数,症状を示すこと,および術前の電気生理学的検査,結果の予測要因として.
主要な成果:
- 5年後には,適切なショックの精算的発生率は63%に達し,任意の自発的なショックは76%に達しました.
- 左心室機能の低下 (エジェクション分数 ≤30%) は,早期のショック発生 (p=0.001) と有意に関連していました.
- 射出分数 ≤30%は,不律性死亡と全死亡率 (p=0.019とp=0.003それぞれ) の最も強い予測因子でした.
結論:
- ほとんどの患者は長期フォローアップ中にショックを経験しますが,これは死亡率の増加と相関していませんので,急性心臓死亡の効果的な予防を示しています.
- 低射出分子は,ショック発生と死亡率の両方の主要な予測因子です.
- どの患者がICDインプラントから最も恩恵を受けるかを予測することは,現在の臨床的特徴に基づいて依然として困難です.
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