What assessment is primarily used to determine fetal compromise during labor?

Fetal heart rate monitoring is the primary assessment used to determine fetal compromise during labor because it provides real-time information about the fetal condition. The fetal heart rate can indicate how well the fetus is coping with the stresses of labor. An abnormal fetal heart rate pattern, such as fetal tachycardia or bradycardia, can signal potential distress or lack of oxygen, prompting timely interventions.

This method is particularly effective since it continuously evaluates the fetal heart rate in correlation with uterine contractions, helping healthcare providers identify patterns that might indicate fetal hypoxia or other issues. Monitoring these vital signs is crucial for making informed clinical decisions and ensuring the well-being of both the mother and the fetus during the labor process. Other assessments, while they can provide supportive information, do not directly measure the fetus's immediate response to the labor environment.