Which FHR category indicates the absence of baseline heart rate with recurrent decelerations?

The correct answer is associated with Category III fetal heart rate (FHR) patterns. Category III is characterized by abnormal FHR tracings that indicate fetal distress. Specifically, this category includes the absence of baseline heart rate and the presence of recurrent variable decelerations, or other concerning patterns such as prolonged decelerations or bradycardia.

Identifying Category III is critical in clinical practice as it often necessitates immediate intervention to ensure fetal well-being, including considerations for potential delivery if the abnormal patterns persist despite corrective measures. Understanding that the absence of the baseline heart rate places a fetus at a higher risk of compromised oxygenation is essential for safe management during labor.

The other categories—Category I and Category II—represent normal and indeterminate patterns, respectively, indicating that the fetus is likely doing well or that there is some concern but not enough to warrant immediate action. Thus, Category III serves a distinct, crucial role in recognizing significant concerns in fetal heart health.