diagnosis cervical effacement and/or dilatation a increased uterine irritability before 37 weeks of gestation forecast: uterine activity monitoring. a Ultrasound Examination of Cervical length ■ Fetal fibronectindiagnosis ◼ cervical effacement and/or dilatation ◼ increased uterine irritability before 37 weeks of gestation forecast: ◼ uterine activity monitoring. ◼ Ultrasound Examination of Cervical length ◼ Fetal Fibronectin