Clin Toxicol:意外过量服用扑热息痛后儿童的肝毒性

2020-02-20 不详 网络

小儿对乙酰氨基酚偶然接触是常见的。多数儿童不需要接受乙酰半胱氨酸治疗,罕见的急性肝损伤。一名3岁(15.4 kg)的女孩意外摄入150毫升的对乙酰氨基酚为24毫克/毫升(240毫克/千克)1小时后出现呕吐并发低烧。摄入后扑热息痛2和4 h的浓度分别为105和97 mg / L,均低于列线图治疗阈值,因此未给予乙酰半胱氨酸。摄入后4小时,ALT升高至52 U / L,然后在17 h升高至219 U

小儿对乙酰氨基酚偶然接触是常见的。多数儿童不需要接受乙酰半胱氨酸治疗,罕见的急性肝损伤。

一名3岁(15.4 kg)的女孩意外摄入150毫升的对乙酰氨基酚为24毫克/毫升(240毫克/千克)1小时后出现呕吐并发低烧。摄入后扑热息痛2和4 h的浓度分别为105和97 mg / L,均低于列线图治疗阈值,因此未给予乙酰半胱氨酸。摄入后4小时,ALT升高至52 U / L,然后在17 h升高至219 U / L,因此在25 h开始静脉注射乙酰半胱氨酸。摄入后5d,ALT最高达到1393 U / L,摄取后44 h,INR达到1.5。乙酰半胱氨酸持续了64 h,恢复良好。测量了扑热息痛的代谢产物,包括无毒的葡萄糖醛酸和硫酸盐结合物以及有毒的细胞色素P450(CYP)代谢产物(半胱氨酸和巯基化物)。对乙酰氨基酚的表观半衰期为6.3 h。她的CYP代谢物比平时高,占总代谢物的11%。葡萄糖醛酸化物和硫酸盐结合物分别占总代谢物的71%和18%。

从此病例可以看出,这种不常见的儿童对乙酰氨基酚液体摄入后发生肝毒性的情况可能是由于近期病毒性疾病的易感性增加和口服摄入减少所致。CYP代谢产物的比例较高。

原始出处:

Chiew AL, Domingo G, et al., Hepatotoxicity in a child following an accidental overdose of liquid paracetamol. Clin Toxicol (Phila). 2020 Feb 18:1-4. doi: 10.1080/15563650.2020.1722150.

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