Final answer:
Variable deceleration in fetal monitoring typically shows umbilical cord compression, which can lead to a fluctuating and potentially dangerous situation for the fetus if not addressed.
Step-by-step explanation:
The tracing of variable deceleration in fetal heart rate monitoring indicates the presence of umbilical cord compression. When the umbilical cord is compressed, it leads to a decrease in the flow of oxygen-rich blood to the fetus, which can cause the fetal heart rate to decelerate. These decelerations are termed 'variable' because they can vary in timing, duration, and shape on the monitor. Unlike early and late decelerations, which signify head compression and uterine placental insufficiency respectively, variable decelerations are more directly associated with changes in cord pressure and can potentially lead to fetal distress if they are severe and persistent.