[US Standard Certificate Of Birth Field 45]. This class represents an observation regarding the labor and delivery of the infant. On the form, this is a multiple-choice question (i.e., "check all that apply"), although one of the choices is "None of the above", so if that one is chosen, there should not be any others chosen. Possible values include: Induction of labor; Augmentation of labor; Non-vertex presentation; Steroids (glucocorticoids) for fetal long maturation received by the mother prior to delivery; Antibiotics received by the mother during labor; Clinical chorioamnionitis diagnosed during labor or maternal temperature >= 38C (100.4F); Moderate/heavy meconium staining of the amniotic fluid; Fetal intolerance of labor such that one or more of the following actions were taken: in-utero resuscitative measures, further fetal assessment, or operative delivery; Epidural or spinal anesthesia during labor; None of the above.