What is the term for the swishing sound of blood circulating through the umbilical cord?

The term for the swishing sound of blood circulating through the umbilical cord is known as funic souffle. This sound is a result of the blood flow through the umbilical vessels, and it can often be detected using a doppler fetal monitor. Funic souffle is typically associated with the fetal heartbeat since it can occur in the same frequency range, but it specifically refers to the sound of blood flow within the cord itself rather than the heart's rhythmic beating. Recognizing funic souffle is important for midwives and healthcare providers as it indicates proper blood circulation to the fetus, ensuring that the baby is receiving adequate oxygen and nutrients during gestation.

The other terms, while potentially related to sounds associated with pregnancy, do not specifically refer to the sound of blood flow through the umbilical cord. For instance, the fetal heartbeat refers to the sound of the heart itself, the placental murmur generally relates to sounds arising from the placenta, and vascular sound is a broader term that could refer to sounds in various blood vessels.