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Vasoconstriction is the narrowing of the blood vessels resulting from contraction of the muscular wall of the vessels, in particular the large arteries and small arterioles. The process is the opposite of vasodilation, the widening of blood vessels. The process is particularly important in controlling hemorrhage and reducing
Arterial occlusion is a condition involving partial or complete blockage of blood flow through an artery. Arteries are blood vessels that carry oxygenated blood to body tissues. [1] [2] An occlusion of arteries disrupts oxygen and blood supply to tissues, leading to ischemia. [1]
Blood tests for monitoring could be performed if you already have a diagnosis and your physician wants to make sure the treatments are working and to check for any negative side effects, Vasagar said.
The small blood vessels form a natural bypass of the blockage, but often do not supply enough blood to meet an increased demand when stressors are applied like exercise. [8] When a plaque has a greater than 50% diameter stenosis, the reduced blood flow through the coronary artery during exertion may lead to angina. [10] Acute coronary events ...
Reperfusion therapy is a medical treatment to restore blood flow, either through or around, blocked arteries, typically after a heart attack (myocardial infarction (MI)). Reperfusion therapy includes drugs and surgery. The drugs are thrombolytics and fibrinolytics used in a process called thrombolysis.
An arrhythmia is an irregular heartbeat that occurs due to a problem with the electrical activity of your heart. ... Peripheral arterial disease is a blockage in the arteries that carry blood away ...
Less frequently, valvular, heart muscle, or arrhythmia issues are the primary focus of the test. Coronary artery luminal narrowing reduces the flow reserve for oxygenated blood to the heart, typically producing intermittent angina. Very advanced luminal occlusion usually produces a heart attack.
Chronic thromboembolic pulmonary hypertension (CTEPH) is a long-term disease caused by a blockage in the blood vessels that deliver blood from the heart to the lungs (the pulmonary arterial tree). These blockages cause increased resistance to flow in the pulmonary arterial tree which in turn leads to rise in pressure in these arteries ...
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