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Premature labor contractions and the value of serum ferritin during pregnancy
E Goepel1, H U Ulmer, R D Neth
1Department of Gynecology, University Hospital, Hamburg-Eppendorf, FRG.
In general, the diagnosis of pregnancy-related anemia relies on the estimation of the hemoglobin level. The findings of this study suggest that the additional estimation of serum ferritin - a reliable index of the iron stores - can improve the diagnosis of anemia. Hematological data of 150 pregnant women were retrospectively related to the courses of pregnancy, in particular to the incidence of premature labor contractions. 70% of the pregnant women included in the investigation had a serum ferritin value below 20 micrograms/l and thus iron deficiency. If the hemoglobin value alone had been estimated, 50.6% of the women with iron deficiency (serum ferritin less than 20 micrograms/l) would not have been detected among those pregnant women with a hemoglobin value of more than 11 g/dl. These findings are also of particular relevance as a significant correlation has been found between the incidence of premature labor contractions and the serum ferritin level: only 11% of the pregnant women investigated whose serum ferritin values exceeded 20 micrograms/l had premature labor contractions, whereas premature labor was recorded in 48% of the pregnant women with serum ferritin values below 10 micrograms/l.
In general, the diagnosis of pregnancy-related anemia relies on the estimation of the hemoglobin level. The findings of this study suggest that the additional estimation of serum ferritin - a reliable index of the iron stores - can improve the diagnosis of anemia. Hematological data of 150 pregnant women were retrospectively related to the courses of pregnancy, in particular to the incidence of premature labor contractions. 70% of the pregnant women included in the investigation had a serum ferritin value below 20 micrograms/l and thus iron deficiency. If the hemoglobin value alone had been estimated, 50.6% of the women with iron deficiency (serum ferritin less than 20 micrograms/l) would not have been detected among those pregnant women with a hemoglobin value of more than 11 g/dl. These findings are also of particular relevance as a significant correlation has been found between the incidence of premature labor contractions and the serum ferritin level: only 11% of the pregnant women investigated whose serum ferritin values exceeded 20 micrograms/l had premature labor contractions, whereas premature labor was recorded in 48% of the pregnant women with serum ferritin values below 10 micrograms/l.