A nurse is caring for a client who is in active labor.The nurse notes early decelerations of the FHR on the fetal monitor tracing.The nurse should identify that which of the following conditions causes early decelerations in the FHR?

Choice A rationaleFetal hypoxemia results from oxygen deprivation and typically causes late decelerations rather than early decelerations, which are associated with head compression during uterine contractions.Choice B rationaleCord compression leads to variable decelerations due to occlusion of fetal blood flow through the umbilical cord. Early decelerations are unrelated to cord compression.Choice C rationaleUteroplacental insufficiency impairs oxygen delivery to the fetus and manifests as late decelerations. Early decelerations reflect mechanical factors like head compression instead.Choice D rationaleHead compression during contractions stimulates the vagus nerve, causing transient early decelerations. These are considered physiological and indicate fetal progression through the birth canal.