Long Interpregnancy interval is linked with the risk for ped
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The period between a live birth and the conception of a subsequent fetus is known as the interpregnancy interval (IPI). Short (less than 6 months) and long (more than 60 months) IPIs have also been shown to increase the likelihood of adverse perinatal outcomes, some of which are recognised risk factors for obstructive sleep apnea syndrome (OSAS) in the offspring.

It was aimed to study the association between IPI and risk for offspring OSAS, during a follow-up period of up to 18 years. In this population-based cohort analysis, all singleton live births, born to a mother with at least one previous birth were included. Congenital malformations were excluded.

Hospitalizations of the offspring due to OSAS diagnosis up to 18 years of age, were evaluated according to IPI length. Intermediate IPI (6–60 months) was considered as the reference. A Kaplan-Meier survival curve and a Cox hazards regression model were used to compare the incidence of OSAS between the groups, and to adjust for confounding variables.

Results:
--The study population included 144,397 deliveries, of which 13.1% were followed by short IPI, 7.9% and 79.0% were followed by long and intermediate IPI, respectively.

--OSAS hospitalization rates were significantly higher among the long IPI group compared to intermediate and short IPIs (0.9%; 0.7% and 0.6%, respectively).

--The association between long IPI and offspring pediatric OSAS remained significant after controlling for preterm delivery, maternal diabetes, and smoking, and mode of delivery.

In conclusion, children born after a long IPI are more likely to develop pediatric obstructive sleep apnea syndrome.

Source: https://onlinelibrary.wiley.com/doi/10.1002/ppul.25240?af=R
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