Cardiovascular outcomes 50 years after antenatal exposure to betamethasone : Follow-up of a randomised double-blind, placebo-controlled trial

Copyright: © 2024 Walters et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited..

BACKGROUND: Antenatal corticosteroids for women at risk of preterm birth reduce neonatal morbidity and mortality, but there is limited evidence regarding their effects on long-term health. This study assessed cardiovascular outcomes at 50 years after antenatal exposure to corticosteroids.

METHODS AND FINDINGS: We assessed the adult offspring of women who participated in the first randomised, double-blind, placebo-controlled trial of antenatal betamethasone for the prevention of neonatal respiratory distress syndrome (RDS) (1969 to 1974). The first 717 mothers received 2 intramuscular injections of 12 mg betamethasone or placebo 24 h apart and the subsequent 398 received 2 injections of 24 mg betamethasone or equivalent volume of placebo. Follow-up included a health questionnaire and consent to access administrative data sources. The co-primary outcomes were the prevalence of cardiovascular risk factors (any of hypertension, hyperlipidaemia, diabetes mellitus, gestational diabetes mellitus, or prediabetes) and age at first major adverse cardiovascular event (MACE) (cardiovascular death, myocardial infarction, coronary revascularisation, stroke, admission for peripheral vascular disease, and admission for heart failure). Analyses were adjusted for gestational age at entry, sex, and clustering. Of 1,218 infants born to 1,115 mothers, we followed up 424 (46% of survivors; 212 [50%] female) at mean (standard deviation) age 49.3 (1.0) years. There were no differences between those exposed to betamethasone or placebo for cardiovascular risk factors (159/229 [69.4%] versus 131/195 [67.2%]; adjusted relative risk 1.02, 95% confidence interval [CI] [0.89, 1.18;]; p = 0.735) or age at first MACE (adjusted hazard ratio 0.58, 95% CI [0.23, 1.49]; p = 0.261). There were also no differences in the components of these composite outcomes or in any of the other secondary outcomes. Key limitations were follow-up rate and lack of in-person assessments.

CONCLUSIONS: There is no evidence that antenatal corticosteroids increase the prevalence of cardiovascular risk factors or incidence of cardiovascular events up to 50 years of age. Established benefits of antenatal corticosteroids are not outweighed by an increase in adult cardiovascular disease.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:21

Enthalten in:

PLoS medicine - 21(2024), 4 vom: 01. Apr., Seite e1004378

Sprache:

Englisch

Beteiligte Personen:

Walters, Anthony G B [VerfasserIn]
Gamble, Greg D [VerfasserIn]
Crowther, Caroline A [VerfasserIn]
Dalziel, Stuart R [VerfasserIn]
Eagleton, Carl L [VerfasserIn]
McKinlay, Christopher J D [VerfasserIn]
Milne, Barry J [VerfasserIn]
Harding, Jane E [VerfasserIn]

Links:

Volltext

Themen:

9842X06Q6M
Adrenal Cortex Hormones
Betamethasone
Journal Article
Randomized Controlled Trial

Anmerkungen:

Date Completed 16.04.2024

Date Revised 25.04.2024

published: Electronic-eCollection

Citation Status MEDLINE

doi:

10.1371/journal.pmed.1004378

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM370469445