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BMC Pregnancy and Childbirth

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01-12-2021 | Sudden Infant Death Syndrome | Research article

Health outcomes of smoking during pregnancy and the postpartum period: an umbrella review

Authors: Tuba Saygın Avşar, Hugh McLeod, Louise Jackson

Published in: BMC Pregnancy and Childbirth | Issue 1/2021

Abstract

Background

Smoking during pregnancy (SDP) and the postpartum period has serious health outcomes for the mother and infant. Although some systematic reviews have shown the impact of maternal SDP on particular conditions, a systematic review examining the overall health outcomes has not been published. Hence, this paper aimed to conduct an umbrella review on this issue.

Methods

A systematic review of systematic reviews (umbrella review) was conducted according to a protocol submitted to PROSPERO (CRD42018086350). CINAHL, EMBASE, MEDLINE, PsycINFO, Web of Science, CRD Database and HMIC databases were searched to include all studies published in English by 31 December 2017, except those focusing exclusively on low-income countries. Two researchers conducted the study selection and quality assessment independently.

Results

The review included 64 studies analysing the relationship between maternal SDP and 46 health conditions. The highest increase in risks was found for sudden infant death syndrome, asthma, stillbirth, low birth weight and obesity amongst infants. The impact of SDP was associated with the number of cigarettes consumed. According to the causal link analysis, five mother-related and ten infant-related conditions had a causal link with SDP. In addition, some studies reported protective impacts of SDP on pre-eclampsia, hyperemesis gravidarum and skin defects on infants. The review identified important gaps in the literature regarding the dose-response association, exposure window, postnatal smoking.

Conclusions

The review shows that maternal SDP is not only associated with short-term health conditions (e.g. preterm birth, oral clefts) but also some which can have life-long detrimental impacts (e.g. obesity, intellectual impairment).

Implications

This umbrella review provides a comprehensive analysis of the overall health impacts of SDP. The study findings indicate that while estimating health and cost outcomes of SDP, long-term health impacts should be considered as well as short-term effects since studies not including the long-term outcomes would underestimate the magnitude of the issue. Also, interventions for pregnant women who smoke should consider the impact of reducing smoking due to health benefits on mothers and infants, and not solely cessation.

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Title: Health outcomes of smoking during pregnancy and the postpartum period: an umbrella review
Authors: Tuba Saygın Avşar
Hugh McLeod
Louise Jackson
Publication date: 01-12-2021
Publisher: BioMed Central
Keyword: Sudden Infant Death Syndrome
Published in: BMC Pregnancy and Childbirth / Issue 1/2021
Electronic ISSN: 1471-2393
DOI: https://doi.org/10.1186/s12884-021-03729-1

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Health outcomes of smoking during pregnancy and the postpartum period: an umbrella review

Abstract

Background

Methods

Results

Conclusions

Implications

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

Implications

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