Unverified88% confidenceDecision RuleTime unknown
记忆棉密度需≥45D（kg/m³）才能有效分散大型犬体重、预防褥疮，密度＜30D的普通海绵垫3-6个月即塌陷失去支撑
1
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88%
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Long-term
Relevance
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Unverified填充物优先选高回弹海绵或记忆棉（密度≥30D），纯PP棉/珍珠棉短期内会塌陷失去支撑；大型犬和重量宠物必须选高密度海绵底座，否则3个月就压扁86% similarUnverified老年犬或大型犬（体重≥25kg）应选择记忆棉密度≥50D且厚度≥8cm的床垫，避免关节压迫和地板硌骨，普通海绵床垫会在半年内塌陷失去支撑86% similarUnverified长期卧床瘫痪或术后大型犬（体重≥25kg），应选厚度≥5cm的记忆棉+凝胶复合垫，纯记忆棉压缩后触底反而加重压疮84% similarUnverified中大型犬(体重≥20kg)选购时中间填充层珍珠棉或高密度海绵密度需≥40D，厚度≥5cm，否则趴卧时会压实无缓震，长期导致关节磨损82% similarUnverified大型犬（体重≥25kg）防跌垫需选高回弹且承压不塌陷材质，普通低密度海绵长期压迫会永久性凹陷失去缓冲，应选密度≥50kg/m³高弹棉或乳胶82% similar
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