What is a characteristic of a Category I fetal heart rate tracing?

A Category I fetal heart rate tracing is defined by specific characteristics that indicate fetal well-being. One of the hallmark features is the baseline fetal heart rate being between 110 and 160 beats per minute (bpm). This range is considered normal and reflects adequate oxygenation and autonomic nervous system function in the fetus.

Fetal heart rate tracings that fall outside this range may suggest potential issues. For instance, a baseline rate below 110 bpm could indicate bradycardia, which may be concerning, while a baseline rate above 160 bpm suggests tachycardia, which can also indicate fetal distress or other complications. Thus, having a baseline heart rate within the 110-160 bpm range aligns with the Category I classification, which is associated with a low probability of fetal acidemia and a reassuring state of fetal health.