What is the definition of fetal heart rate (FHR) tachycardia?

Fetal heart rate (FHR) tachycardia is defined as a sustained heart rate greater than 160 beats per minute (bpm). This condition indicates that the fetal heart is beating faster than the normal baseline, which typically ranges from 110 to 160 bpm. Tachycardia can be a sign of various factors affecting the fetus, including maternal fever, dehydration, or fetal distress, and may necessitate further evaluation and monitoring. Recognizing FHR tachycardia is crucial for timely interventions and management to ensure fetal well-being during labor and delivery. Understanding this definition also helps in differentiating normal versus abnormal findings during fetal monitoring.