“…The challenges of toco-anesthesia in high risk pregnancies and the safety of the maternal-fetal binomium in premature labor are faced by conventional regional and systemic pharmacological methods. In spinal blocks, some items are mandatory: six-to eight-hour fasting to prevent chemical pneumonitis due to aspiration of gastric contents; control of maternal hypotension and fetal hypoxia (acidosis) by moving the uterus to the left, volume expansion, administration of vasopressors (ephedrine, phenylephrine, metaraminol), and rapid fetal extraction after uterotomy (UD interval, uterotomy-delivery, lower than three minutes) 24,[45][46][47][48][49][50][51][52][53][54] . The incidence of cesarean section at the Maternidade-Escola J Cicco (UFRN-SUS) is higher than 40%, i.e., lower than the 70% incidence in private hospitals (Natal, RN, Brazil).…”