血液培養のパラダイムシフト:血液培養ボトル2セットは常に必要か?
Jyoti Somani1, Rossana Rosa2, Kelley Manzanillo1
1Department of Infection Prevention and Control, Jackson Health System, Miami, Florida, USA.
American journal of infection control
|January 16, 2026
まとめ
血液培養(BC)ボトル不足時に実施された保存戦略は、患者の安全性や感染イベント検出に悪影響を与えることなく、BC陽性率と採取血液量を改善した。
科学分野:
- 臨床微生物学;感染症;ヘルスケアマネジメント
背景:
- 血液培養(BC)ボトルの不足により、リソースの利用を最適化するための多面的な介入が必要となった。;この介入は、診断収量を維持しながら、重要な消耗品を節約することを目的とした。
研究 の 目的:
- BCの収量と血流感染症(BSI)検出に対するBCボトル保存戦略の影響を評価する。;介入期間中の患者の安全性指標を評価する。
主な方法:
- 安全性ネット病院で横断的研究を実施し、13ヶ月のベースライン期間と12ヶ月の介入期間を比較した。;保存戦略には、血液量の最適化、低収量オーダーの抑制、患者あたりのセット数の制限、および反復BC間隔の延長が含まれた。;BC陽性率とBSIイベントの傾向を管理図を用いて分析した。
主要な成果:
- 全体のBC陽性率は8.6%から12.6%に有意に増加した(p=0.001)。特に救急部門、ICU、およびメディカル・サージカル部門で顕著な増加が見られた。;セットあたりの血液量は中央値で5.7 mLから7.5 mLに増加した(p=0.001)。;陽性BC数、バンコマイシン使用量、または急性ICU転室には有意な変化は観察されなかった。
結論:
- BCボトル保存措置は、診断収量や患者の安全性を損なうことなく、陽性率と血液量を効果的に改善した。;この結果は、将来の研究において、従来のBCオーダーおよび採取方法を再評価する必要があることを示唆している。
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