Fetal distress during labor occurs in about 10% to 25% of pregnancies. This broad range is due to varying definitions and cases where the fetus may not be receiving enough oxygen. The estimates also differ because "fetal distress" is not consistently defined across medical sources. Most cases of fetal distress are managed without major complications. Doctors monitor the fetal heart rate to detect abnormalities early. That way, they can intervene if needed. They might provide oxygen, change the mother’s position, or perform an emergency C-section.