Final answer:
If late decelerations occur, the correct action is to discontinue the infusion of oxytocin immediately, which may help improve fetal oxygenation and reduce the risk of further complications.
Step-by-step explanation:
Urgent Measures for Late Decelerations in Labor
If late decelerations occur during labor, it is vital to focus on the safety of the mother and the fetus. Late decelerations can be a sign of uteroplacental insufficiency, indicating that the fetus may not be receiving adequate oxygen. In such cases, the correct action is to discontinue the infusion of oxytocin if it is being administered because it can exacerbate the problem. This reduces the strength and frequency of contractions, hopefully improving the blood flow to the fetus. Moreover, it is often necessary to increase maternal oxygen, change the mother's position, and ensure adequate hydration. These actions can help improve fetal oxygenation and well-being. Administering magnesium sulfate, increasing the dosage of oxytocin, or switching to a different uterotonic agent would not be appropriate as it may worsen the condition.