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Screening Characteristics of Hemoglobin and Mean Corpuscular Volume for Detection of Iron Deficiency in Pregnancy.
Obstetrics and Gynecology ( IF 5.7 ) Pub Date : 2024-10-03 , DOI: 10.1097/aog.0000000000005753
Hui Xiao Chao,Travis Zack,Andrew D Leavitt

Iron deficiency in pregnancy remains underdiagnosed despite professional society recommendations for first-trimester complete blood count (CBC) screening. To determine the effectiveness of the CBC hemoglobin and mean corpuscular volume (MCV) to identify iron deficiency in pregnancy, we conducted a retrospective analysis of 20,550 pregnancies from 2009 to 2022 at the University of California, San Francisco, obstetrics clinics. A total of 16,547 (80.5%) pregnant individuals had first-trimester screening CBC; 345 (2.1%) had a coincident ferritin test. Hemoglobin level less than 11 g/dL and MCV level less than 80 fL each had sensitivity of only 30% (95% CI, 20-41%) to detect first-trimester iron deficiency (ferritin level less than 30), corresponding to a negative likelihood ratio of 0.90 (95% CI, 0.77-1.05) and 0.85 (95% CI, 0.73-0.99), respectively. More than 50% of the 1,749 women with documented iron deficiency anytime during pregnancy were neither anemic nor microcytic at the time of diagnosis.

中文翻译:


血红蛋白和平均红细胞体积的筛查特征用于检测妊娠期铁缺乏症。



尽管专业协会建议进行妊娠早期全血细胞计数 (CBC) 筛查,但妊娠期缺铁仍未得到充分诊断。为了确定 CBC 血红蛋白和平均红细胞体积 (MCV) 识别妊娠期铁缺乏症的有效性,我们对 20,550 年至 2009 年在加州大学旧金山分校产科诊所的 20,550 例妊娠进行了回顾性分析。共有 16,547 名 (80.5%) 孕妇进行了孕早期 FBC 筛查;345 例 (2.1%) 进行了重合铁蛋白检测。血红蛋白水平低于 11 g/dL 和 MCV 水平低于 80 fL 对检测孕早期缺铁(铁蛋白水平低于 30)的敏感性仅为 30% (95% CI,20-41%),对应于 0.90 (95% CI,0.77-1.05) 和 0.85 (95% CI,0.73-0.99) 的阴性似然比。在怀孕期间任何时候记录缺铁的 1,749 名妇女中,超过 50% 的人在诊断时既没有贫血也没有小细胞。
更新日期:2024-10-03
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