What does a variable deceleration of fetal heart rate typically indicate?

• A. Fetal distress
• B. Uteroplacental insufficiency
• C. Cord compression
• D. Placental abruption

Answer: (C)

A variable deceleration of fetal heart rate is commonly associated with cord compression. This type of deceleration is characterized by an abrupt decrease in the fetal heart rate that can occur with uterine contractions or even independently, often due to changes in fetal position that compress the umbilical cord. This compression can decrease blood flow and oxygen to the fetus temporarily, resulting in the characteristic drop in heart rate.

In contrast, fetal distress is generally indicated by more prolonged and gradual decelerations, while uteroplacental insufficiency often leads to a more gradual decrease in heart rate and variability, rather than the abrupt nature of variable decelerations. Placental abruption can lead to fetal distress as well but is characterized by different signs, including more sustained changes in heart rate patterns. Understanding these distinctions helps healthcare providers interpret fetal heart rate patterns more accurately and make timely clinical decisions.