The inflatable belt (Baby-guardTM ) and study protocol The Baby-guardTM (CABEL s.a.s. Costruzioni Elettroniche, Pistoia, Italy) consists of a disposable, ergonomic, three chambers, inflatable belt, and a detector of electro-physiological signals from maternal abdomen (i.e. fetal heart and maternal heart signals - Figure 1). myographic uterine activity). Three chambers that can be separately swollen one from the other in order to repositioning fetal body compose the inflatable belt. The three belt chambers are filled according to the pressures set by the operator (midwife/MD) and allow to gently positioning of the fetus in the wright position towards the pelvis. Once the correct fetal position has been obtained, all three chambers are inflated in synchronously with uterine contraction. The maternal and fetal monitoring unit is composed by a touch-screen computer, that records electro-physiological signals collected by a signal amplifier deriving from the mother (uterine contractions and the maternal heart rate) and the fetus (fetal heart rate and the possibility of Doppler parameters of fetal heart). All parameters and signals detected by the Baby-guardTM system are storable on the touch-screen computer hard disk, as per request of the European Community rules on safety (UNI EN60601)].