The goal of this observational study is to learn about cardiac function and remodelling and metabolomic profiles in fetuses and infants who were exposed to a threatened preterm labor (TPL) during pregnancy.
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Fetal cardiac sphericity index
Timeframe: 24 - 36+6 weeks of gestation
Fetal cardiac diameters
Timeframe: 24 - 36+6 weeks of gestation
Fetal ventricular and atrial areas
Timeframe: 24 - 36+6 weeks of gestation
Fetal cardiac ejection fraction
Timeframe: 24 - 36+6 weeks of gestation
Fetal cardiac ejection volume
Timeframe: 24 - 36+6 weeks of gestation
Fetal cardiac filling and ejection time fractions
Timeframe: 24 - 36+6 weeks of gestation
Fetal cardiac debit
Timeframe: 24 - 36+6 weeks of gestation
Fetal mitral and tricuspid annular plane systolic excursion (MAPSE and TAPSE)
Timeframe: 24 - 36+6 weeks of gestation
Fetal cardiac E/A ratios
Timeframe: 24 - 36+6 weeks of gestation
Fetal cardiac isovolumetric relaxation time
Timeframe: 24 - 36+6 weeks of gestation
Fetal Doppler
Timeframe: 24 - 36+6 weeks of gestation
Fetal growth
Timeframe: 24 - 36+6 weeks of gestation
ProBNP, troponin and cystatin levels in cord blood
Timeframe: Third stage of labor
Estimated left ventricular myocardial mass
Timeframe: 6 months
Left ventricular muscle index
Timeframe: 6 months
Left ventricular end-diastolic volume
Timeframe: 6 months
Left ventricular ejection fraction
Timeframe: 6 months
Infant global cardiac longitudinal strain rate
Timeframe: 6 months
Infant cardiac strain rate imaging
Timeframe: 6 months