The effect of maternal anaemia and iron deficiency on the ratio of fetal weight to placental weight
The effect of maternal anaemia and iron deficiency on the ratio of fetal weight to placental weight
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母亲贫血和缺铁对胎儿体重与胎盘重量比的影响
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
P. Steer
中科院分区：
文献类型：
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作者：
P. Steer
尊敬的先生，麦克斯韦等人得出的结论。(199 1）在异常妊娠中胎儿采血的风险增加是无效的。他们所描述的是四组具有不同妊娠损失的复杂妊娠。主要原因是潜在的病理学，作者承认这一点。在讨论中，他们强调，目前还不确定复杂妊娠中增加的损失有多少是由于手术或疾病的自然史。的确.在非免疫性水肿的情况下，文献中描述的脐带穿刺术前的宫内死亡率据报道为51%（Gough等，1986），这并不高于这里描述的（13/29 = 45%）。用作者的话来说，没有对照组，在对照组中没有进行任何手术，因此无法确定研究中任何组的精确手术相关风险。D. Economides Nuffield妇产科约翰拉德克利夫医院妇产科牛津OX 3 9DU
Dear Sir, The conclusion reached by Maxwell et ul. (199 1) that the risk of fetal blood sampling is increased in abnormal pregnancies is not valid. What they have described are four groups of complicated pregnancies that have different pregnancy losses. The primary reason is the underlying pathology and the authors acknowledge this. In the discussion they stress that it is uncertain as to how much of the increased loss in the complicated pregnancies is due to the procedure or to the natural history of the disease. Indeed. in the case of non-immune hydrops the intrauterine death rate described in the literature before the days of cordocentesis has been reported to be 51% (Gough et al. 1986), and this is not higher than described here (13/29 = 45%). In the authors’ words, there was no control group in which no procedure was performed so a precise procedure-related risk cannot be established for any of the groups in the study. D. Economides Nuffield Department of Obstetrics und Gynaecology John Radcliffe Hospital Maternity Dept Oxford OX3 9DU