Unverified90% confidenceDecision RuleTime unknown
回弹(chest recoil)反馈常被忽视但至关重要,2020 AHA指南要求每次按压后完全回弹,选购时应确认模型能检测并反馈回弹不充分(如按压后未完全松手),仅测深度和频率的模型无法纠正倚靠胸壁的错误习惯
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