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Parada-Ricart, Ester; Luque, Veronica; Zaragoza, Marta; Ferre, Natalia; Closa-Monasterolo, Ricardo; Koletzko, Berthold; Grote, Veit; Gruszfeld, Dariusz; Verduci, Elvira; Xhonneux, Annick and Escribano, Joaquin (2022): Effect of maternal smoking during pregnancy on child blood pressure in a European cohort. In: Scientific Reports, Vol. 12, No. 1, 17308

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Hypertension is a public health issue that can have its origin in the early phases of development. Maternal smoking during pregnancy (MSDP) could play a role in offspring's cardio-metabolic programming. To assess the relationship between MSDP and later blood pressure (BP) in children we conducted a secondary analysis of a randomized dietary intervention trial (EU-Childhood Obesity Project). Healthy term infants with normal birth weight were recruited during the first 8 weeks of life in 5 European countries and followed until 11 years of age. Data on MSDP was collected at recruitment. BP and anthropometry were assessed at 11 years of age. Children were classified according to AAP guidelines as normal BP: BP < 90th percentile;high BP: >= 90th percentile with the subset of children having BP > 95th percentile categorized as hypertensive. Out of 572 children, 20% were exposed to MSDP. At 11 years, 26.8% had BP over the 90th centile. MSDP beyond 12 weeks of gestation was associated with higher systolic BP percentile (adjusted B 6.935;95% CI 0.454, 13.429;p = 0.036) and over twofold increase likelihood of hypertension (OR 2.195;95% CI 1.089, 4.423;p = 0.028) in children at 11 years. MSDP was significantly associated with later BP in children.

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