Fig 1.
The non-invasive fetal electrocardiogram (NI-fECG) setup with electrodes on the maternal abdomen.
Table 1.
Distribution of the different types of CHD included in the study population.
Fig 2.
Flow diagram of patient inclusion.
Table 2.
Baseline characteristics of participants.
Table 3.
Summary statistics (median [IQR]) on the two dimensions for the overall CHD group and each subgroup compared to the healthy control group.
Fig 3.
Mean electrical heart axis (MEHA) with corresponding 95% CI in the frontal plane plotted in a circle diagram for each group.
Abbreviations: AVSD = atrioventricular septal defect, CHD = congenital heart disease, CTA = conotruncal anomalies, HRHS = hypoplastic right heart syndrome.
Table 4.
Difference in normalized () coordinates between the healthy control group and each CHD subgroup.