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Cancer in pregnancy and the risk of adverse pregnancy and neonatal outcomes: A nationwide cohort study

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OBJECTIVES: To investigate the obstetrical management of cancer in pregnancy and to determine adverse pregnancy and neonatal outcomes.

DESIGN: A nationwide cohort study.

SETTING AND POPULATION: We included all pregnancies (n = 4 071 848) in Denmark from 1 January 1973 to 31 December 2018.

METHODS: Exposure was defined as pregnancies exposed to maternal cancer (n = 1068). The control group comprised pregnancies without cancer. The groups were compared using logistic regression analysis and adjusted for potential confounders.

MAIN OUTCOME MEASURES: The outcomes were induced abortion, preterm birth and adverse neonatal outcomes.

RESULTS: More women with cancer in pregnancy, as compared with the control group, experienced induced abortion (24.8% vs. 20.0%); first-trimester induced abortion adjusted odds ratio (aOR) 3.5 (95% confidence interval [CI] 2.7-4.5), second-trimester induced abortion; aOR 8.8 (95% CI 6.3-12.3), planned preterm birth (11.8% vs. 1.3%); aOR 10.8 (95% CI 8.0-14.6) and planned preterm birth at <32 gestational weeks; aOR 16.3 (95% CI 8.3-31.7). Neonates born to mothers with cancer in pregnancy had a higher risk of respiratory distress syndrome; aOR 3.5 (95% CI 2.8-4.4), low birthweight; aOR 3.8 (95% CI 3.1-4.8), admission to neonatal intensive care unit for >7 days; aOR 5.1 (95% CI 3.9-6.6), neonatal infection; aOR 1.8 (95% CI1.1-3.1) and neonatal mortality; aOR 4.7 (95% CI 2.7-8.2), but not of SGA; aOR 1.0 (95% CI 0.6-1.5) and malformations; 1.2 (95% CI 0.9-1.7).

CONCLUSION: Cancer in pregnancy increases the risk of induced abortion and planned premature birth. Neonates born to mothers with cancer in pregnancy had an increased risk of neonatal morbidity and mortality, presumably due to prematurity.

TWEETABLE ABSTRACT: Cancer in pregnancy is associated with an increased risk of premature birth leading to adverse neonatal outcomes.

OriginalsprogEngelsk
TidsskriftBJOG : an international journal of obstetrics and gynaecology
Vol/bind129
Udgave nummer9
Sider (fra-til)1492-1502
Antal sider11
ISSN1470-0328
DOI
StatusUdgivet - aug. 2022

Bibliografisk note

© 2021 John Wiley & Sons Ltd.

ID: 72962919