This study is a prospective longitudinal observational study that includes participants consecutively. All cases are seen at the high risk SGA outpatient ward. The source population is recruited from the population under treatment with term fetuses (Gestational age =32 weeks at inclusion and born after 37 weeks gestation) suspected of growth restriction defined as an estimated fetal weight or fetal abdominal circumference, measured below the 10th population or customized percentile or a change of abdominal circumference <5mm in 2 weeks (=reduced growth velocity according to Green Top Guidelines).<br><br>Diagnostic tools<br>During pregnancy: Pregnancies complicated with suspected growth restriction are followed each two to three weeks until delivery in a routinue fashion including fetal biometry, advanced ultrasound investigation (including fetal functional echocardiography: Aortic intima media thickness, aortic distensibility, right/Left sphericity index, right/Left cardiac output, tricuspid annular plane systolic excursion (TAPSE), right E/A ratio, tight E´,left myocardial performance index, including IRT measurement, strain/strain rate), feto-maternal Doppler, measurement of amniotic fluid and placenta, and registration of fetal heart rate with fetal ECG (AN 24 MONICA device) and simultaneously with conventional computerised CTG for 40 minutes. <br><br>Obstetric ultrasound examinations are performed using Voluson E8 or Samsung HS 70A whereas functional echocardiographic parameter are measured using Samsung HS 70 A. All functional echocardiographic parameters are calculated off-line within four weeks after evaluation according to a standardised protocol based on a trace method with the assistance of commercially available software (TOMTEC ImageArena software). AGA group will be scanned to get 15 controls for each gestational week from 32 to 41 weeks of gestation.<br><br>During birth: Participants receive the standard evaluation during labour as do other pregnancies complicated by FGR.