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Comparing pregnancy outcomes in patients with Systemic Lupus Erythematosus (SLE) and Undifferentiated Connective Tissue Disease (UCTD): a descriptive cohort study

Muñoz Muñoz, Candido; Farinha, Filipa; McDonnell, Thomas; J'bari, Hajar; Nguyen, Hanh; Isenberg, David; Rahman, Anisur; ... Giles, Ian; + view all (2024) Comparing pregnancy outcomes in patients with Systemic Lupus Erythematosus (SLE) and Undifferentiated Connective Tissue Disease (UCTD): a descriptive cohort study. Revista Clínica Española: Journal of Internal Medicine , 224 (6) pp. 357-365. 10.1016/j.rceng.2024.04.013.

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Abstract

BACKGROUND: Females diagnosed with systemic lupus erythematosus (SLE) face an elevated risk of adverse pregnancy outcomes (APOs). However, the evidence regarding whether a similar association exists in patients with undifferentiated connective tissue disease (UCTD) is inconclusive. METHODS: We conducted a retrospective review (2006-2019) of pregnancy outcomes among patients with SLE (n = 51) and UCTD (n = 20) within our institution. We examined the occurrence of various APOs, encompassing miscarriage, stillbirth, termination, preterm birth, pre-eclampsia, eclampsia, HELLP syndrome, intrauterine growth restriction, abruption placentae, congenital heart block, or other cardiac abnormalities. RESULTS: The mean age at pregnancy was 35 ± 7.0 years for patients with SLE and 35 ± 6.8 years for those with UCTD (p = 0.349). The proportion of Caucasian women was 47% in SLE and 80% in UCTD. Pregnancies in both groups were planned (81% in SLE and 77% in UCTD), and patients presented with inactive disease at conception (96% in SLE and 89% in UCTD). Hydroxychloroquine at conception was utilized by 86% of women with SLE, in contrast to 36% in the UCTD group. Both, SLE and UCTD cohorts exhibited low rates of disease flares during pregnancy and/or puerperium (14% vs. 10%). The incidence of APOs was 15.6% in SLE patients compared to 5% in those with UCTD (Risk difference 19.5%; 95% confidence interval: -3.9 to 43.1; p = 0.4237). CONCLUSION: Our study underscores the importance of strategic pregnancy planning and the maintenance of appropriate treatment throughout pregnancy to ensure optimal disease management and minimize adverse outcomes in both SLE and UCTD pregnancies.

Type: Article
Title: Comparing pregnancy outcomes in patients with Systemic Lupus Erythematosus (SLE) and Undifferentiated Connective Tissue Disease (UCTD): a descriptive cohort study
Location: Spain
DOI: 10.1016/j.rceng.2024.04.013
Publisher version: https://doi.org/10.1016/j.rceng.2024.04.013
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Adverse pregnancy outcomes, Enfermedad del tejido conectivo indiferenciado, Lupus eritematoso sistémico, Resultados adversos del embarazo, Systemic lupus erythematosus, Undifferentiated connective tissue disease
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Medicine
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL EGA Institute for Womens Health
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Inst of Clinical Trials and Methodology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Medicine > Inflammation
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL EGA Institute for Womens Health > Maternal and Fetal Medicine
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Inst of Clinical Trials and Methodology > MRC Clinical Trials Unit at UCL
URI: https://discovery.ucl.ac.uk/id/eprint/10194337
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