Depleted iron stores without anaemia early in pregnancy carries increased risk of lower birthweight even when supplemented daily with moderate iron  

Oleh:

Ribot, B. ; Aranda, N. ; Viteri, F. ; Hernandez-Martínez, C.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Human Reproduction vol. 27 no. 05 (May 2012), page 1260-1266.
Topik: EARLY PREGNANCY; Birthweight; Iron Stores; Pregnancy; Anaemia; Iron Supplementation

Ketersediaan

Perpustakaan FK Nomor Panggil: H07.K.2012.02 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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BACKGROUND Gestational iron-deficiency anaemia has adverse pregnancy outcomes. Antenatal iron supplementation can be beneficial in anaemic women, but the effects in non-anaemic women are controversial. This observational study assessed the relationship of maternal iron stores (depleted or non-depleted) at gestational Weeks 8–12 with birthweight, in non-anaemic pregnant women following the guidelines of the Ministry of Health of Spain. METHODS Healthy, non-anaemic pregnant women (n = 205) were studied. At the first antenatal visit, a general clinical assessment was conducted, and basal blood taken. Women were classified as having non-depleted or depleted iron stores [serum ferritin (SF) < 12 µg/l)]. Daily antenatal iron supplements (48 mg on average) were started at 17 (range: 16–18) weeks. Blood haemoglobin, SF and transferrin saturation (TS) were measured in each trimester. RESULTS Of the study sample, 20, 54 and 66% had SF < 12 µg/l in the first, second and third trimesters, respectively. The prevalence of iron-depletion (SF < 12 µg/l) and iron-deficiency (SF < 12 µg/l and TS < 16%) was greater during the entire pregnancy in women with initial iron depletion versus no depletion (81.6 and 73.7% versus 61.7 and 55.4%, respectively, in the third trimester, P < 0.05). Women with initial iron-depletion delivered babies weighing on average 192 g less than that with initial iron stores, after adjusting for confounding variables (P = 0.028). CONCLUSIONS Beginning pregnancy with non-depleted iron stores is beneficial for the maternal iron status during pregnancy and infant birthweight. These findings reaffirm the importance of health promotion to ensure that women have adequate iron stores prior to, or early in, pregnancy when supplemented with moderate daily iron doses.

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