Malaria and gravidity interact to modify maternal haemoglobin concentrations during pregnancy

Area of Science:

• Obstetrics and Gynecology
• Tropical Medicine
• Hematology

Background:

• Primigravidity is a significant risk factor for malaria and anemia in pregnancy.
• The impact of gravidity on anemia during pregnancy, especially with intermittent preventive treatment (IPTp), requires further exploration.

Purpose of the Study:

• To evaluate how gravidity influences hemoglobin level changes throughout pregnancy.
• To assess the relationship between gravidity, malaria, and anemia in pregnant women.

Main Methods:

• Analysis of data from 3,591 pregnant women across three studies in South Benin (2005-2012).
• Assessment of hemoglobin, gravidity, gestational age, and malaria infection at multiple antenatal visits and delivery.
• Statistical analysis using logistic or linear regression to determine the impact of gravidity on maternal hemoglobin.

Main Results:

• Primigravidae had significantly lower hemoglobin levels at the first antenatal visit compared to multigravidae.
• Hemoglobin levels increased significantly in primigravidae throughout pregnancy, with levels at delivery comparable to multigravidae.
• Malaria prevalence decreased more in primigravidae than multigravidae; iron deficiency was more prevalent in multigravidae.

Conclusions:

• Intermittent preventive treatment (IPTp) likely contributed to improved hemoglobin levels in primigravidae during pregnancy, primarily through malaria reduction.
• Anemia in multigravidae during pregnancy was predominantly linked to iron deficiency, with less pronounced hemoglobin improvement compared to primigravidae.