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泻可在7 d内恢复。(3)在呕吐率方面,锌元素<20 mg组 dose zinc for childhood diarrhea:a randomized,multi‐
和等剂量组中,锌组患儿的呕吐率均显著高于对照组, center trial[J]. N Engl J Med,2020,383(13): 1231-1241.
提示低剂量锌同样有增加呕吐的风险。而国内锌元 [ 5 ] BARFFOUR M A,HINNOUHO G M,WESSELLS K R,
素<20 mg 时的呕吐风险研究结果并不一致,一部分研 et al. Effects of therapeutic zinc supplementation for diar‐
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分研究则表明呕吐风险随锌剂量增加而增高 。值得 on the incidence and duration of diarrhea and acute respi‐
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吐率的差异无统计学意义,这可能是因为纳入文献较少
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(仅2篇)所致,结果有待验证。另外,异质性和敏感性分
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