ラクトバシルス 細菌血症と内血管感染症: 100人の患者の遡及的研究
Christopher V Radcliffe1, Melis N Anahtar2, Elizabeth L Hohmann3
1Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA.
Open forum infectious diseases
|August 25, 2025
まとめ
ラクトバシルス菌血症は,患者のほぼ3分の1に内臓炎を引き起こす可能性があります. 心臓内装置と注射薬の使用は,このリスクを高め,陽性血液培養物の慎重な臨床解釈の必要性を強調します.
科学分野:
- 感染症
- 微生物学
- 心臓病科
背景:
- 乳球菌は一般的な胃腸細菌で,血液培養物で見つかった場合,皮膚汚染物質と考えられます.
- しかし,ラクトバシルスによる血流感染症と内心炎は,稀ですが,文書化されています.
研究 の 目的:
- ラクトバシルスバクテレミアに罹患した患者における可能または確固たる内心炎の予測要因を特定する.
- 血液培養におけるラクトバチルス単離体の臨床的意義を分析する.
主な方法:
- 22年間にわたって遡及的なコホート研究が行われました.
- ラクトバシルス菌血症/ 血管内感染症の患者は,修正されたデューク基準を用いて分析された.
- 血液培養 (BCC) の汚染は排除され,抗菌剤の感受性はスープの微細化によって決定された.
主要な成果:
- 診断された331人の患者のうち100人が分析対象となった.
- 29%の患者は,可能または確固たる内臓炎を発症した.
- 心臓内装置/非本来の弁 (RR,8. 57) と注射薬物使用 (RR,13. 47) は重要な予測因子でした.
- 90日間の全死率は22%でした
結論:
- Lactobacillus bacteremiaの患者のほぼ3分の1が内臓炎を患った.
- 多微生物感染は頻繁に発生した.
- 血液培養における乳球菌は,潜在的病原性として扱われ,臨床的な文脈での解釈が必要である.
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