What is the term for FHR patterns that are associated with uterine contractions?

The term for fetal heart rate (FHR) patterns associated with uterine contractions is "periodic patterns." These patterns are directly related to contractions and typically include changes in the FHR that occur in a consistent manner with the contractions. For example, during labor, the FHR may demonstrate variability that corresponds with the timing of uterine contractions, often reflecting the effects of uteroplacental circulation and fetal response to the stress of labor.

In contrast, episodic patterns are not directly tied to contractions and may occur independently of any uterine activity. Consistent patterns refer more generally to the reliability of the FHR over time but do not necessarily indicate a relationship with uterine contractions. Variable patterns are characterized by abrupt changes in the FHR that can occur regardless of periods of uterine contraction, often caused by cord compression or other factors. Therefore, periodic patterns uniquely connect FHR changes to the physiological process of uterine contractions, leading to their classification as such.