Reduced right ventricular function on cardiovascular magnetic resonance imaging is associated with uteroplacental impairment in tetralogy of Fallot

Table 1 Baseline characteristics (prior to pregnancy)

	Total n = 31
Maternal age at conception (years)	30.0 ± 4.8
BMI (kg/m²)	24.6 ± 4.3
NYHA class
I	21 (67.7%)
II	10 (32.3%)
Modified WHO class^a
II	25 (80.6%)
III	6 (19.4%)
Surgical history
Age complete ToF repair	2 [1–5 years]
Type of ToF repair
Infundibular patch / commissurotomy	13 (41.9%)
Transannular patch	12 (38.7%)
RV-pulmonary artery conduit	2 (6.5%)
Other	4 (12.9%)
Pulmonary valve replacement	8 (25.8%)

Data is reported as mean ± SD, median [interquartile range] or n (%).^aRisk classification of maternal cardiovascular risk during pregnancy [17]. BMI body mass index, NYHA New York Heart Association, RV right ventricle, ToF Tetralogy of Fallot, WHO World Health Organization

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