Objective-Power spectrum (PS) of uterine electromyography (EMG) can identify true labor. EMG propagation velocity (PV) to diagnose labor has not been reported. The objective was to compare uterine EMG against current methods to predict preterm delivery.Study design-EMG was recorded in 116 patients (preterm labor, n=20; preterm non-labor, n=68; term labor, n=22; term non-labor, n=6). Student's t-test was used to compare EMG values for labor vs. non-labor (P<0.05 significant). Predictive values of EMG, Bishop-score, contractions on tocogram, and transvaginal cervical length were calculated using receiver-operatorcharacteristics analysis.Results-PV was higher in preterm and term labor compared with non-labor (P<0.001). Combined PV and PS peak frequency predicted preterm delivery within 7 days with area-underthe-curve (AUC) = 0.96. Bishop score, contractions, and cervical length had AUC of 0.72, 0.67, and 0.54.Conclusions-Uterine EMG PV and PS peak frequency more accurately identify true preterm labor than clinical methods.

Intimate partner violence (IPV) is a common occurrence in pregnancy and results in an increased risk of adverse outcomes. Homicide may be the most common cause of maternal death. Women who are pregnant and the victims of IPV have high rates of stress, are more likely to smoke or use other drugs, deliver a preterm or low birth weight infant, have an increase in infectious complications, and are less likely to obtain prenatal care. The IPV continues in the postpartum period. Adolescents may be at even higher risk than their adult counterparts. Children raised in violent homes have both immediate and life long adverse health outcomes as a result of their exposure to IPV. IPV adds substantially to healthcare costs both for direct services to treat the injuries and higher utilization of a wide range of healthcare services. Healthcare providers, particularly those who care for pregnant women, are in a unique position to identify these women and direct them and their families to the help they need to end the violence in their lives.

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