Superseded92% confidenceDecision RuleTime unknown
3岁以下幼儿使用的软球直径必须≥4.4cm（超过标准硬币及咽喉安全测试圆筒直径3.17cm），避免整球或咬碎后的碎块造成气道阻塞窒息
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Long-term
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This knowledge claim has been superseded by newer content
球体直径必须大于5cm（超过幼儿口腔直径）以规避误吞窒息风险，3岁以下优先选直径≥10cm的软质发泡球或PU球Sources
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