Unverified85% confidenceDecision RuleTime unknown
单向阀最好带可更换的过滤膜/滤片（HEPA或HME过滤层），过滤效率≥95%可显著降低施救者感染呼吸道传染病风险，无过滤层的产品建议每次使用后整体丢弃或严格消毒
1
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85%
Confidence
Long-term
Relevance
-
First Seen
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