What is a characteristic of periodic decelerations?

Periodic decelerations, particularly variable decelerations, are characterized by their direct association with uterine contractions. During labor, the fetus may experience a decrease in heart rate that correlates with the timing of these contractions, indicating a relationship between them. When contractions occur, they may lead to transient reductions in fetal heart rate due to factors such as cord compression or changes in uterine blood flow.

This association helps clinicians assess fetal well-being during labor, as the pattern of decelerations in relation to contractions can provide insights into the fetus's condition. While some decelerations can suggest potential issues, such as fetal distress, the key aspect of periodic decelerations is that they follow the timing of uterine contractions. Understanding this relationship is crucial for monitoring fetal health and managing labor effectively.