The combined spinal-epidural analgesia during the labor has been associated with changes in
fetal heart rate, which the opinions in literature are not fully consolidated and some
studies have failed to show an increase significant fetal bradycardia following the
combination lock. In addition, it’s not clear that these changes found may modify the
perinatal outcome in pregnancies who attend with intrauterine growth restriction (IUGR),
since there are no studies comparing the techniques in this population.