The Rate of Asymptomatic Plasmodium Parasitemia and Placental Parasitization in Urban and Rural Areas of Cross River State, Nigeria

Cajethan Emechebe; Andrew Enwa Okpe; Edu Michael Eyong; Charles Obinna Njoku

doi:10.3889/oamjms.2022.8636

Authors

Cajethan Emechebe Department of Obstetrics and Gynecology, University of Calabar Teaching Hospital (UCTH), Calabar, Nigeria
Andrew Enwa Okpe Department of Obstetrics and Gynecology, University of Calabar Teaching Hospital (UCTH), Calabar, Nigeria
Edu Michael Eyong Department of Obstetrics and Gynecology, University of Calabar Teaching Hospital (UCTH), Calabar, Nigeria
Charles Obinna Njoku Department of Obstetrics and Gynecology, University of Calabar Teaching Hospital (UCTH), Calabar, Nigeria

DOI:

https://doi.org/10.3889/oamjms.2022.8636

Keywords:

Asymptomatic malaria, Parasitemia, Placental parasitization, Birth weight, Anemia

Abstract

Background: Malaria in pregnancy contributes to feto-maternal morbidity and mortality even in asymptomatic forms of the disease especially in malaria endemic regions such as Nigeria.
Objective: To determine the rate of asymptomatic malaria parasitemia and placental parasitization among the rural and urban pregnant women and its feto-maternal effects in Cross River State, Nigeria.
Methodology: This was a prospective study of 440 pregnant women in rural and urban settings. Participants completed structured questionnaire and also have their blood samples and placentas examined for presence of malaria parasites by microscopy and histology respectively. Maternal hemoglobin concentration, birth weight, neonatal length, Apgar score and other anthropometric measurements were obtained to assess feto-maternal effect of asymptomatic malaria parasitemia and placental parasitisation in pregnancy. Data were analyzed using SPSS version 21.0 and level of significance was set as 0.05.
Results
The prevalence of asymptomatic malaria parasitemia was 40.2% while malaria placental parasitization was 70.2%. Based on residential status, 49.5% of rural residents had malaria parasitemia which is significantly higher than their urban resident counterparts 30.9% (p=0.000). The prevalence of placental parasitization was significantly higher among rural residents 80.9% than their urban resident counterparts 59.5% (p=0.000). Concerning obstetric outcome of patients with positive malaria placental parasitisation, preterm delivery, low 5th minutes Apgar score (<7), low birth weight (<2.5kg) and low neonatal length were significantly higher in pregnancy with positive placental parasitisation than in women with negative placental malaria parasitisation. Also, preterm delivery, anemia, low 5th minutes Apgar score (<7) and low birth weight (<2.5kg) were significantly higher in pregnancy with positive malaria parasitemia than women with negative malaria parasitemia.
Conclusion
Asymptomatic malaria parasitemia (40.2%) and malaria placental parasitization (70.2%) in this study is high and contributes to poor obstetric outcomes mostly in the rural areas. Rural pregnant women have the highest burden than the urban women. Promotion of the use of ITNs, IPT during pregnancy and other malaria preventive measures are necessary especially in rural areas where malaria burden is highest.

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