What is the definition of antegrade flow?

Antegrade: Forward-moving. As in blood flow. Sometimes synonymous with anterograde. From the Latin ante- + gradior, to step.

What is antegrade flow in the left vertebral artery?

The vertebral arteries can be variable in diameter. They should always demonstrate antegrade flow (toward the brain) and be low resistance similar to the ICA. Arrows indicate normal flow direction in the extra cerebrovascular circulation. Arrows indicate the flow direction in a right sided subclavian steal syndrome.

Is antegrade vertebral artery flow normal?

Postoperatively a new Directional Doppler ultrasound examination then showed bilateral normal (= antegrade) vertebral artery blood flow. The used non-invasive technique is shown to have high reliability and may be used to screen patients suspected of having subclavian steal pre-angiographically and preoperatively.

What is a bilateral carotid duplex scan?

Carotid Artery Duplex Scan. A bilateral color doppler analysis is used to look inside the carotid bulb as well as internal and external carotid arteries. This test is used to determine the velocity of blood flow to the brain and find the presence, amount, and location of arterial plaque.

What is carotid duplex ultrasound?

A carotid duplex is a carotid ultrasonography carried out by duplex ultrasonography. A duplex carotid ultrasound may include a Doppler ultrasound, a special test able to reveal the movement of blood cells through the carotid arteries.

What is retrograde blood flow?

This term is defined as the backward flow of menstrual blood. In short, Sampson’s theory proposes that the retrograde flow of menstrual blood is linked to the development of endometriosis.

What is carotid artery test?

Carotid Artery Exam. The carotid arteries supply blood to the brain. A complete carotid artery examination includes measurement of blood pressure in both arms and ultrasound of the carotid arteries, vertebral arteries and the subclavian arteries on both sides.