Congenital heart disease

Congenital Heart Disease Fetuses Have Decreased Mid-Gestational Placental Flow, Placental Malperfusion Defects, and Impaired Growth

JACC AdvPublished prospective case-control study

Main finding · Mid-gestational UVVF indexed to fetal weightResult — go to the resultDecrease 15%

Authors' conclusion

CHD (particularly single ventricle) fetuses have decreased mid-gestational placental blood flow, increased placental malperfusion defects, and impaired fetal growth. Placental MVM may influence impaired fetal growth in CHD.

Study context

Population
Congenital heart disease (CHD) fetuses, including those with single ventricle physiology, and controlsCHD fetuses, plus 36 controls · CHD fetuses 38 · single ventricle physiology (of the CHD fetuses) 28 · controls 36
Participants
38 fetuses
Comparison
CHD fetuses compared to controls
  • CHD fetusesn = 38
  • Controlsn = 36
Outcome
Mid-gestational UVVF indexed to fetal weight
Follow-up
2nd trimester

Main finding

As reported in the abstract

Decrease

15%

P < 0.01

Observational data: associations, not effects.

Further findings

Placental maternal vascular malperfusion (MVM) lesions · increased in CHD fetuses

P < 0.05

High-grade MVM

P = 0.05

Placental fetal vascular malperfusion lesions · trend toward increase in CHD fetuses

P = 0.10

OutcomeReductionP value
UVVF as a proportion of fetal cardiac output · 2nd trimesterReduction in CHD fetuses compared to controls27%P < 0.01

Birth weight in CHD fetuses by placental lesions

Placental maternal vascular malperfusion (MVM) but not fetal vascular malperfusion lesions associated with decreased birth weight in CHD fetuses
P < 0.001

Umbilical venous volume flow (UVVF) and placental pathologic findings or fetal growth

No association between UVVF and placental pathologic findings or fetal growth

Original publication

Congenital Heart Disease Fetuses Have Decreased Mid-Gestational Placental Flow, Placental Malperfusion Defects, and Impaired Growth. JACC Adv. Published 16 January 2025. doi:10.1016/j.jacadv.2024.101559

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