What is the medical term for dilated blood vessels?
What is the medical term for dilated blood vessels?
What is the medical term for dilated blood vessels?
Vasodilation refers to the widening, or dilation, of the blood vessels. It is a natural process that increases blood flow and provides extra oxygen to the tissues that need it most.
What is a dilated blood vessel?
Definition: The opening up or enlargement of the blood vessels that is controlled by the action of certain hormones on the muscular lining of the vessels.
What blood vessels supply the brain?
The brain receives blood from two sources: the internal carotid arteries, which arise at the point in the neck where the common carotid arteries bifurcate, and the vertebral arteries (Figure 1.20). The internal carotid arteries branch to form two major cerebral arteries, the anterior and middle cerebral arteries.
Why do blood vessels dilate in brain?
One theory is that blood vessels may overreact to triggers such as stress. It’s suggested that this reaction narrows some arteries, and that other arteries open up to get more oxygen to the brain, which causes the release of pain-producing prostaglandins.
How do blood vessels open in the brain?
Endovascular techniques do not require invasive open surgery. The physician employs catheters (thin tubes) that are guided through blood vessels to the brain. From the tip of the catheter, the physician deploys stents or other devices to restore blood flow. (Endovascular means inside blood vessels.)
What is the medical term that refers to the tightening or narrowing of a blood vessel?
Stenosis – A narrowing of a blood vessel, such as artery or vein.
How do you widen blood vessels in the brain?
- Balloon angioplasty / stenting is a minimally invasive endovascular procedure that compresses the plaque and widens the diameter of the artery (Fig. 3).
- Cerebral artery bypass is a surgical procedure that reroutes the blood supply around the plaque-blocked area.
Distension of the stomach caused by a thickened pylorus (pyloric stenosis), abdominal surgery, or trauma; also referred to as gastric distension. The medical term for dilated blood vessels; commonly referred to as “spider veins”. Telangiectasias are characteristic of autoimmune disorders such as scleroderma, lupus, and Dermatomyositis.
How does vasodilation affect the capillaries of the brain?
Although vasodilation decreases blood pressure in major blood vessels, it can increase blood pressure in smaller blood vessels called capillaries. This is because capillaries do not dilate in response to increased blood flow. Increased blood pressure within the capillaries of the brain can cause fluid to leak into surrounding brain tissue.
What does vascular mean in the medical field?
Any disease of the circulatory system. Vascular refers to veins and arteries. A physician who specializes in the surgical treatment of blood vessels. A blood vessel (except pulmonary veins) through which oxygen-depleted blood returns to the heart.
What does dilation of the abdominal aorta mean?
Dilation (ballooning) greather than 50% of normal diameter of all three layers of the abdominal aorta, the body’s largest artery. Most common true aneurysm of the artery; rupture results in life-threatening internal bleeding. Chest pain caused by restricted blood flow causing reduced oxygen supply to the heart.
Although vasodilation decreases blood pressure in major blood vessels, it can increase blood pressure in smaller blood vessels called capillaries. This is because capillaries do not dilate in response to increased blood flow. Increased blood pressure within the capillaries of the brain can cause fluid to leak into surrounding brain tissue.
Dilation (ballooning) greather than 50% of normal diameter of all three layers of the abdominal aorta, the body’s largest artery. Most common true aneurysm of the artery; rupture results in life-threatening internal bleeding. Chest pain caused by restricted blood flow causing reduced oxygen supply to the heart.
How is blood drained from the brain by ablation?
Ablation The removal of material from the surface of an object by vaporization, chipping, or other erosive process. Abnormal cerebral venous drainage Blood is drained from the brain th rough a network of veins & venous sinuses (‘lakes’). Much of the blood eventually drains into the jugular veins.
Any disease of the circulatory system. Vascular refers to veins and arteries. A physician who specializes in the surgical treatment of blood vessels. A blood vessel (except pulmonary veins) through which oxygen-depleted blood returns to the heart.