A nurse is caring for a client who is receiving oxytocin for the induction of labor and notes late decelerations of the fetal heart rate on the monitor tracing. The nurse should take which of the following actions?

Late decelerations are a type of fetal heart rate (FHR) pattern that indicate fetal hypoxia (lack of oxygen) due to uteroplacental insufficiency (decreased blood flow to the placenta). They are defined as a gradual decrease in FHR that occurs after the peak of a uterine contraction and returns to baseline after the end of the contraction¹. Late decelerations are associated with adverse neonatal outcomes, such as low Apgar scores, acidosis, and neonatal intensive care unit admission².
The nurse should take immediate actions to improve fetal oxygenation and blood flow when late decelerations are detected. The first and most important action is to place the client in a lateral position, either left or right, to reduce compression of the inferior vena cava and increase uterine perfusion. This can improve fetal oxygenation and reduce the severity of late decelerations¹³.
The other actions that the nurse should take are:
- Discontinue oxytocin infusion if it is being used for induction or augmentation of labor, as it can cause uterine tachysystole (excessive contractions) and worsen uteroplacental insufficiency¹³.
- Administer oxygen to the client at 8 to 10 L/min via a nonrebreather face mask to increase maternal oxygen saturation and fetal oxygen delivery¹³.
- Increase intravenous (IV) fluid infusion rate to maintain maternal hydration and blood pressure, which can improve uterine blood flow¹³.
- Notify the provider and prepare for possible operative delivery if late decelerations persist or fetal distress occurs¹³.
- Provide emotional support and reassurance to the client and family, as late decelerations can cause anxiety and fear⁴.

The other options are not actions that the nurse should take:
- a) Administer misoprostol 25 mcg vaginally. This is not correct because misoprostol is a medication that is used to induce labor by ripening the cervix and stimulating contractions. It is not indicated for late decelerations and can cause uterine hyperstimulation and fetal distress⁵.
- c) Administer oxygen via a face mask at 2 L/min. This is not correct because this is too low of an oxygen flow rate to improve fetal oxygenation. The recommended oxygen flow rate for late decelerations is 8 to 10 L/min via a nonrebreather face mask¹³.
- d) Decrease the maintenance IV solution infusion rate. This is not correct because this can cause maternal dehydration and hypotension, which can reduce uterine blood flow and worsen fetal hypoxia. The nurse should increase the IV fluid infusion rate to maintain maternal hydration and blood pressure¹³.

This is the action that the nurse should take after recognizing an early deceleration of the fetal heart rate tracing. Early decelerations are symmetrical decreases and return-to-normal linked to uterine contractions¹. The decrease in heart rate occurs gradually, and the nadir of the deceleration occurs at the same time as the peak of the uterine contraction³. Early decelerations are caused by compression of the fetus's head during a uterine contraction, which can stimulate the vagus nerve and cause a decrease in the fetal heart rate⁴. Early decelerations are nothing to be alarmed about¹. They are considered normal and benign, as they do not affect fetal oxygenation or well-being³. Therefore, the nurse should continue to monitor the client and the fetal heart rate tracing and document the findings.

The other options are not correct because they are not appropriate actions for early decelerations.
a) Assist the client to lay on her right side.
This is not an appropriate action for early decelerations, as they are not caused by maternal position or uteroplacental insufficiency. Changing the maternal position may help improve fetal oxygenation and blood flow in cases of late or variable decelerations, which are signs of fetal distress¹. However, early decelerations do not indicate fetal distress and do not require any intervention.
c) Discontinue the oxytocin.
This is not an appropriate action for early decelerations, as they are not caused by oxytocin administration or uterine hyperstimulation. Oxytocin is a hormone that stimulates uterine contractions and can be used to induce or augment labor. However, excessive or prolonged use of oxytocin can cause uterine fatigue and reduce its ability to contract after delivery, leading to uterine atony and postpartum hemorrhage². Oxytocin can also cause late or variable decelerations, which are signs of fetal distress¹. However, early decelerations do not indicate fetal distress and do not require any intervention.

d) Administer oxygen at 8 L/min per mask.
This is not an appropriate action for early decelerations, as they are not caused by fetal hypoxia or acidosis. Oxygen administration may help improve fetal oxygenation and blood flow in cases of late or variable decelerations, which are signs of fetal distress¹. However, early decelerations do not indicate fetal distress and do not require any intervention.