Maternal Oral Hydration and External Cephalic Version

Inclusion Criteria: * single gestation * breech presentation * from 37 to 41,5 weeks * without pregnancy complications * fetus adequate for gestational age * without fetal malformations * intact membranes * amniotic fluid index between 7 and 24 cm * placenta properly inserted Exclusion Criteria: * age less than 18 years * maternal disease at risk of fluid overload (cardiac disease, renal impairment, moderate or severe preeclampsia or hypertension and diabetes) * contraindications for vaginal birth * vaginal blood loss * uterine contractions