The Effects of Prophylactic Iron Given in Prenatal Supplements on Iron Status and Birth Outcomes: A Randomized Controlled Trial

Siega-Riz, Anna Maria; Hartzema, Abraham G.; Turnbull, Craig; Thorp, John M., Jr.; McDonald, Thaddeus L.; & Cogswell, Mary E. (2006). The Effects of Prophylactic Iron Given in Prenatal Supplements on Iron Status and Birth Outcomes: A Randomized Controlled Trial. American Journal of Obstetrics and Gynecology, 194(2), 512-9.

Siega-Riz, Anna Maria; Hartzema, Abraham G.; Turnbull, Craig; Thorp, John M., Jr.; McDonald, Thaddeus L.; & Cogswell, Mary E. (2006). The Effects of Prophylactic Iron Given in Prenatal Supplements on Iron Status and Birth Outcomes: A Randomized Controlled Trial. American Journal of Obstetrics and Gynecology, 194(2), 512-9.

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Objective: The hypothesis that daily use of a prenatal supplement with iron from enrollment to third trimester to initially iron-replete, nonanemic pregnant women would reduce third-trimester anemia and improve birth outcomes was tested.

Study design: Eight hundred sixty-seven women in Raleigh, North Carolina, who were at <20 weeks of gestation were enrolled; 429 of these women had hemoglobin levels of ?110 g/L and ferritin levels of ?40 ?g/L and were assigned randomly to receive prenatal supplements with 30 mg of iron as ferrous sulfate (n = 218 women) or 0 mg of iron (n = 211 women) until 26 to 29 weeks of gestation. Intent-to-treat analysis was used for the outcomes of third-trimester iron status, birth weight, preterm birth, and small-for-gestational age.

Results: Mean birth weight was higher by 108 g (P = .03), and the incidence of preterm delivery was lower (8% vs 14%; P = .05) in the 30-mg group compared with the control group, respectively. Iron supplementation did not affect the prevalence of small-for-gestational age infants or third-trimester iron status.

Conclusion: Prophylactic iron supplementation that is begun early in pregnancy among low income women in the United States may have benefits beyond the reduction of iron deficiency anemia during pregnancy.




JOUR



Siega-Riz, Anna Maria
Hartzema, Abraham G.
Turnbull, Craig
Thorp, John M., Jr.
McDonald, Thaddeus L.
Cogswell, Mary E.



2006


American Journal of Obstetrics and Gynecology

194

2

512-9










2882

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