Fetal ST Segment and T Wave Analysis in Labor

Inclusion Criteria: * Singleton, cephalic pregnancy * Gestational age at least 36 weeks, 1 day * Cervical dilation of at least 2 cm and no more than 7 cm * Ruptured membranes Exclusion Criteria: * Multifetal gestation * Planned cesarean delivery * Need for immediate delivery * Absent variability or sinusoidal pattern at any time, or a Category II fetal heart rate pattern with absent variability in the last 20 minutes before randomization * Inability to obtain or maintain an adequate signal within 3 trials of electrode placements * Occurrence of any ST event during attempt to obtain adequate signal * Patient pushing in the first stage of labor * Known major fetal anomaly or fetal demise * Previous uterine surgery * Placenta previa on admission * Maternal fever greater than or equal to 38 C or 100.4 F * Active HSV infection * Known HIV or hepatitis infection * Other maternal and fetal contraindications for using the STAN monitor * Enrollment in another labor study * Participation in this trial in a previous pregnancy * No certified or authorized provider available