Severe anemia in pregnancy in rural Ghana: a case-control study of causes and management.

BACKGROUND: Various factors contribute to severe anemia in pregnancy in low-income countries. This study assesses which of these are of importance in rural Ghana, and evaluates management. METHODS: Prospective case-control study in two (sub)district hospitals in rural Ghana among 175 severely anemic pregnant women (Hb < 8.0 g/dl), receiving a comprehensive treatment package; and 152 non-anemic pregnant women (Hb > or = 10.9 g/dl), giving birth at the study hospitals, matched for age and parity. Evaluated characteristics were need for treatment for urinary tract infection and schistosomiasis; sickle cell and HIV status; antenatal care characteristics; and Hb increase after treatment. Statistical analysis included Chi square test and general linear modeling. RESULTS: Associated with severe anemia were multiple pregnancy (OR 8.9; 95%CI 1.1-71.0), urinary tract infection (OR 6.2; 95%CI 3.5-11.0), residence outside study (sub)district (OR 2.7; 95%CI 1.7-4.3), body mass index < 20.0 (OR 2.0; 95%CI 1.2-3.4), and less than 4 antenatal clinic visits (OR 1.9; 95%CI 1.2-3.0). No association was found with sickle cell or HIV status, schistosomiasis treatment, blood loss in pregnancy, or gestational age at antenatal care registration. After treatment, mean Hb in the severe anemia group increased by 3.2 g/dl, significantly more than in the control group (0.2 g/dl; p<0.001). Modeling showed that the number of antenatal visits and the lowest Hb together explained approximately 25% of the variability in Hb prior to childbirth among women with severe anemia. CONCLUSIONS: Treatable causes contribute considerably to severe anemia in pregnancy in low-income countries. Even with limited resources, a substantial increase of Hb can be achieved.

Maternal and fetal outcome after severe anemia in pregnancy in rural Ghana.

BACKGROUND: Anemia in pregnancy contributes to poor outcome for mother and child in low-income countries. This study analyzes adverse maternal and fetal outcome after severe anemia in pregnancy in rural Ghana. METHODS: A cohort study in two (sub)district hospitals, including 157 pregnant women exposed to severe anemia (Hb < 8.0 g/dl) and 152 nonexposed pregnant women (Hb > or = 10.9 g/dl), matched for age and parity strata. Adverse outcomes analyzed were postpartum hemorrhage, need for blood transfusion, maternal mortality, low birth-weight, and perinatal mortality. RESULTS: Compared to nonexposed women, exposed women had an increased risk of maternal death (5/157 versus 0/152). Fetal outcome did not significantly differ between the study groups, although perinatal mortality was increased with exposure to Hb < 7.0 g/dl (OR 3.1; 95% CI 1.0-9.4), and low birth-weight was increased with exposure to Hb < 6.0 g/dl (OR 2.5; 95% CI 1.2-5.4). Overall fetal outcome was significantly better when hemoglobin prior to childbirth was at least 8.0 g/dl (OR 3.9; 95% CI 1.6-9.6), body mass index at least 20 kg/m2 (OR 2.8; 95% CI 1.5-5.3), and number of antenatal visits at least 4 (OR 2.0; 95%CI 1.1-3.7). CONCLUSIONS: Severe anemia in pregnancy results in relatively poor maternal and fetal outcome. Apparently maternal risks increase prior to fetal risks. In order to improve maternal and fetal outcome, it is recommended that district hospitals in low-income countries make prevention, early diagnosis, and treatment of severe anemia in pregnancy a priority.