Effect of inter-pregnancy interval on serum ferritin, haematocrit and pregnancy outcome in Ilorin, Nigeria

Abstract

Background: Available information remains limited on inter-pregnancy interval (IPI) and its effect on maternal health and pregnancy outcome.
 Objectives: To determine the effect of IPI on maternal serum ferritin, haematocrit and pregnancy outcome.
 Materials and methods: A prospective cohort study of 316 women categorized into WHO recommended IPI of ≥24 months (group I) and IPI <24 months i.e. short IPI (SIPI) as group II after matching for gestational age and social status. Serum ferritin and haematocrit levels were assayed in first and second trimesters; primary outcome measures were maternal serum ferritin, haematocrit and pregnancy outcome gestational age at delivery, birth and placental weights, APGAR scores and neonatal intensive admission). Participants were followed up until six-week post-delivery. Data analysis was with SPSS version 21.0; p<0.05 wassignificant.
 Results: Women in group I had higher mean serum ferritin (37.40±3.15 vs. 32.61±2.68; P<0.001), booking haematocrit (33.24±3.59 vs. 27.92±2.67; P<0.001) and mean birth weight (3100±310 vs. 2700±350; P<0.001). Antenatal hospital admission (P0.002), preterm delivery (P<0.001) and neonatal intensive care admission (P<0.001) were higher for group II. There was no maternal mortality; perinatal mortality was zero (group I) and 95/1000 livebirth (group II).
 Conclusion: Low serum ferritin, haematocrit and adverse neonatal outcomes were associated with SIPI.
 Keywords: Inter-pregnancy interval; serum ferritin; haematocrit; pregnancy outcome.

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