Cardio-oncology & otherCohort study

Severe Maternal Morbidity According to Mode of Delivery Among Pregnant Patients With Cardiomyopathies

JACC Heart FailPublished

  • Retrospective cohort study
  • target trial emulation

Authors' conclusion

In patients with cardiomyopathies, a trial of labor does not confer a higher risk of maternal morbidity, blood transfusion, or readmission compared with planned cesarean delivery.

Study context

Population
Pregnant patients with a cardiomyopathy, Premier inpatient administrative database
Participants
2,921 deliveries
Exposure
Intended vaginal delivery vs intended cesarean delivery
Outcome
Nontransfusion severe maternal morbidity during delivery hospitalization, blood transfusion and readmission

Main finding

As reported in the abstract

Intended vaginal delivery vs Intended cesarean deliveryAdjusted odds ratio (95% CI)
nontransfusion morbidity
1.17(0.91–1.51)
blood transfusion
1.27(0.81–1.98)
readmission
1.03(0.73–1.44)

Observational data: associations, not effects.

Further findings

OutcomeaOR (95% CI)
Nontransfusion morbidity and blood transfusion, cesarean vs vaginal delivery (as-treated) — Cesarean delivery vs Vaginal delivery · nontransfusion morbidity · as-treated2.44 (1.85–3.22)
Nontransfusion morbidity and blood transfusion, cesarean vs vaginal delivery (as-treated) — Cesarean delivery vs Vaginal delivery · blood transfusion · as-treated2.26 (1.34–3.81)

Original publication

Severe Maternal Morbidity According to Mode of Delivery Among Pregnant Patients With Cardiomyopathies. JACC Heart Fail. Published 8 November 2023. doi:10.1016/j.jchf.2023.09.012

Summarised from the published abstract; every number is checked against it