When the umbilical cord is wrapped around the neck, there are some situations where changes in the fetal heart rate may occur. The umbilical cord is mostly wrapped around the neck just once, which generally does not affect the growth and development of the fetus, nor does it significantly change the fetal heart rate. The impact on the fetal heart rate in the case of nuchal cord depends on how tight the cord is wrapped around the neck, the number of loops, and the length of the umbilical cord, among other factors. If the umbilical cord is tightly wrapped and has multiple loops, or if it is compressed due to contractions of the uterus, it can obstruct fetal blood circulation and lead to hypoxia in the fetus, thereby affecting the fetal heart rate.