What is Doppler and for which diseases it is needed

Indications for the appointment of Doppler ultrasound


The Doppler effect in the case of medical research is that ultrasound waves are reflected from blood particles, and this change will directly depend on the speed of blood flow. Ultrasound imaging with a special sensor is used to assess blood flow through the main vessels (arteries, veins) of the neck, arms, legs. The study may reveal difficulties in blood flow during vasoconstriction, detect blood clots in the veins.
To assess blood circulation in the brain vessels, this study is used in the following cases: to determine the risk of stroke, cerebral circulation disorders, vascular spasm, after coronary artery bypass surgery (to determine the likelihood of embolism), as well as in neurosurgical patients. Indications for Doppler ultrasound are: migraine, dizziness, vegetative-vascular dystonia, headaches of unknown origin.
Doppler of the neck vessels reveals pathologies of the vertebral and carotid arteries. This study is used for the following symptoms: noise in the head, transient ischemic attacks with temporary paralysis of half of the body or arm, dizziness, temporary blindness in one eye, flickering before the eyes, transient loss of consciousness, headaches, temporary imbalances, falls, not accompanied by loss of consciousness.
Ultrasound examination of the vessels of the lower extremities makes it possible to identify pathologies of arteries and veins. It is performed with the following symptoms and diseases: pathologies of the arteries and veins of the lower extremities, intermittent claudication, hypersensitivity of the feet to cold, chilliness, numbness in the feet, varicose veins, swelling of the legs, heaviness in the legs, skin pigmentation on the legs.

Doppler ultrasound during pregnancy


Doppler ultrasound is prescribed during pregnancy to determine the speed of blood flow to the fetus to assess the functioning of the placenta. This study is carried out if there are concerns about the intrauterine growth of the child, as well as with increasing blood pressure in a woman.Cardiotocograph (a special kind of doppler) is used to assess the heartbeat of the fetus. If a pregnant woman regularly senses the movements of the baby, most likely this study will not be prescribed.
The fetus is connected to the placenta through the umbilical cord, inside it are 2 arteries and 1 vein. Through the blood from the placenta to the baby enters nutrients and oxygen. If the blood flow is obstructed, the fetus may not receive enough of them, this may cause a slowdown in its growth. In case of detection of high resistance to blood flow through the vessels, the question of early delivery may arise.


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