[KongchangAI]
Unverified82% confidenceDecision RuleTime unknown

呼气正压值治疗排痰通常需覆盖10-20 cmH₂O区间,且能随呼气流量自适应;选购时确认产品可提供≥10 cmH₂O的有效背压,过低(<5 cmH₂O)无法有效开放塌陷气道

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