What defines a prolonged deceleration in fetal heart rate?

A prolonged deceleration in fetal heart rate is characterized by a significant drop in the heart rate lasting for an extended duration. Specifically, a drop of at least 15 beats per minute sustained for more than 2 minutes is considered a prolonged deceleration. This definition is crucial in monitoring fetal well-being, as it may indicate underlying issues such as fetal distress or other complications that require immediate clinical attention.

The choice of a 15 bpm decline is based on established guidelines that help healthcare providers assess and respond to changes in fetal heart patterns appropriately. Time is a critical factor, as the duration of the deceleration reflects the potential impact on fetal oxygenation and necessitates an appropriate response from the medical team. Recognizing this threshold aids in effective monitoring and intervention strategies to ensure the safety of the fetus during labor.