Doppler ultrasound is a noninvasive investigation that measures the blood flow in certain anatomical regions of the fetus (umbilical cord, brain, liver, heart) to assess its overall health. Doppler ultrasound can be performed concurrently with normal (morphology) ultrasound that follows the fetus's anatomical conformation and also uses the same equipment.
Most new ultrasound equipment is also provided with a doppler, so that when locating a certain vascularized anatomical region, the special button for the doppler that will evaluate the blood flow at this level can be activated. Blood flow from the umbilical, cerebral and heart arteries is most often followed.
When is Doppler sonography recommended?
Doppler sonography is most commonly used in the last trimester of pregnancy, when most vital organs are sufficiently developed. It is recommended for pregnant women at risk, namely those with:
In some situations doppler sonography becomes vital. For example, if placental insufficiency (mature placenta) occurs and certain modophyses of the secondary fetus are also noted, premature birth can be established and serious complications can be avoided.
This also holds true for Rh incompatibility when the fetus can develop severe and even fatal hemolytic anemia if not treated properly.
Tags Pregnancy ultrasound