Maternal asthma and early fetal growth : the MAESTRO study

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Maternal asthma and early fetal growth : the MAESTRO study

Rejnö, Gustaf (författare): Karolinska Institutet

Lundholm, Cecilia (författare): Karolinska Institutet

Saltvedt, Sissel (författare): Karolinska Institutet

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Larsson, Kjell (författare): Karolinska Institutet

Almqvist, Catarina (författare): Karolinska Institutet

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ISSN 0954-7894
2021-03-25
2021
Engelska.
Ingår i: Clinical and Experimental Allergy. - Stockholm : Karolinska Institutet, Dept of Medical Epidemiology and Biostatistics. - 0954-7894 .- 1365-2222.

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Background: Several maternal conditions can affect fetal growth, and asthma during pregnancy is known to be associated with lower birth weight and shorter gestational age. Objective: In a new Swedish cohort study on maternal asthma exposure and stress during pregnancy (MAESTRO), we have assessed if there is evidence of early fetal growth restriction in asthmatic women or if a growth restriction might come later during pregnancy. Methods: We recruited women from eight antenatal clinics in Stockholm, Sweden. Questionnaires on background factors, asthma status and stress were assessed during pregnancy. The participants were asked to consent to collection of medical records including ultrasound measures during pregnancy, and linkage to national health registers. In women with and without asthma, we studied reduced or increased growth by comparing the second-trimester ultrasound with first-trimester estimation. We defined reduced growth as estimated days below the 10th percentile and increased growth as days above the 90th percentile. At birth, the weight and length of the newborn and the gestational age was compared between women with and without asthma. Results: We enrolled 1693 participants in early pregnancy and collected data on deliveries and ultrasound scans in 1580 pregnancies, of which 18% of the mothers had asthma. No statistically significant reduced or increased growth between different measurement points were found when women with and without asthma were compared; adjusted odds ratios for reduced growth between first and second trimester 1.11 95% CI (0.63–1.95) and increased growth 1.09 95% CI (0.68–1.77). Conclusion and clinical relevance: In conclusion, we could not find evidence sup- porting an influence of maternal asthma on early fetal growth in the present cohort. Although the relatively small sample size, which may enhance the risk of a type II error, it is concluded that a potential difference is likely to be very small.

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Av författaren/redakt...: Rejnö, Gustaf; Lundholm, Cecili ...; Saltvedt, Sissel; Larsson, Kjell; Almqvist, Catari ...

Artiklar i publikationen: Clinical and Exp ...

Av lärosätet: Karolinska Institutet

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