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When vasodilation causes systolic blood pressure to fall below 90 mmHg, circulatory shock is observed. [11] Vascular resistance depends on several factors, including the length of the vessel, the viscosity of blood (determined by hematocrit) and the diameter of the blood vessel. [18]
Telangiectasias (from tel- 'end' angi- 'blood vessel' and ectasia 'the expansion of a hollow or tubular organ'), also known as spider veins, are small dilated blood vessels [1] that can occur near the surface of the skin or mucous membranes, measuring between 0.5 and 1 millimeter in diameter. [2]
Gastric antral vascular ectasia (GAVE) is an uncommon cause of chronic gastrointestinal bleeding or iron deficiency anemia. [1] [2] The condition is associated with dilated small blood vessels in the gastric antrum, which is a distal part of the stomach. [1] The dilated vessels result in intestinal bleeding. [3]
The most common treatments are medications and surgery to repair the damaged blood vessels in your brain. Valvular heart disease Heart valve problems may be treated with medications or surgery.
Gastric antral vascular ectasia, dilation of small blood vessels in the last part of the stomach. Telangiectasias are small dilated blood vessels found anywhere on the body, but commonly seen on the face around the nose, cheeks, and chin. Venous ectasia, dilation of veins or venules, such as: Chronic venous insufficiency, often in the leg
Coronary artery ectasia is characterized by an increased wall stress of the vessel, thinning of the arterial wall which causes progressive dilation and remodelling of the vessel. [2] The permanent dilation of the artery is thought to be mainly caused by inflammation, triggered by disease, chemicals, or physical stress of the vessel. [3]
Dilation can be regulated by endothelial cells, which line the insides of blood vessels. By dilating and contracting, blood vessels slow down or increase the flow of blood to the parts of the body ...
A headache happens when blood vessels, nerves, or muscles in your head or neck get irritated. For most people, common triggers like stress, dehydration, or even skipping a meal can bring one on.