Which of the following is characteristic of atherosclerosis?
Atherosclerosis is the buildup of fats, cholesterol and other substances in and on your artery walls. This buildup is called plaque. The plaque can cause your arteries to narrow, blocking blood flow. The plaque can also burst, leading to a blood clot.
What is true atherosclerosis?
Atherosclerosis, sometimes called “hardening of the arteries,” occurs when fat, cholesterol, and other substances build up in the walls of arteries. These deposits are called plaques. Over time, these plaques can narrow or completely block the arteries and cause problems throughout the body.
Is atherosclerosis reversible?
Although atherosclerosis is not “reversible” as such, there are a variety of treatments available to slow down the process and prevent it from worsening, up to and including surgery. Talk to your doctor about your best options.
Which arterial disorder results when the layers of the arterial wall split apart from one another and blood accumulates between the layers?
In spontaneous coronary artery dissection (SCAD), a tear forms in an artery in the heart. This can cause blood to pool in the area between the layers. Blood trapped between the layers can form a blood clot (hematoma). SCAD can reduce or block blood flow through the artery, which can cause a heart attack.
How is atherosclerosis diagnosis?
Doctors have an arsenal of diagnostic tests and tools they can access to confirm the presence of Atherosclerosis – these include an angiogram (Arteriogram), cholesterol tests, a chest x-ray, a CT (computed tomography) scan, Duplex scanning, an echocardiogram, an electrocardiogram (ECG or EKG), an exercise stress test ( …
Which of the following statements is true of high density lipoproteins?
The correct answer is HDL removes cholesterol from the bloodstream.
How thrombosis occurs in atherosclerosis?
The interaction between exposed atherosclerotic plaque components, platelet receptors and coagulation factors eventually leads to platelet activation, aggregation and the subsequent formation of a superimposed thrombus (i.e. atherothrombosis) which may compromise the arterial lumen leading to the presentation of acute …
How does atherosclerosis cause thrombosis?
Causes of arterial thrombosis
Arterial thrombosis usually affects people whose arteries are clogged with fatty deposits. This is known as atherosclerosis. These deposits cause the arteries to harden and narrow over time and increase the risk of blood clots.
Which arteries are affected by atherosclerosis?
The arteries in the heart (coronary arteries), neck (carotid arteries) and the legs are affected most often. A plaque can also break apart. If this happens, a blood clot (thrombus) forms at the break and blocks blood flow.
What are the main causes of atherosclerosis?
Atherosclerosis is thickening or hardening of the arteries caused by a buildup of plaque in the inner lining of an artery. Risk factors may include high cholesterol and triglyceride levels, high blood pressure, smoking, diabetes, obesity, physical activity, and eating saturated fats.
What is the difference between atherosclerosis and thrombosis?
In fact, although atherosclerosis preferentially occurs in areas of turbulent blood flow and low fluid shear stress, thrombosis is induced by high shear stress.
How does atherosclerosis lead to myocardial infarction?
The plaques that develop in atherosclerosis can rupture, causing a blood clot. The clot might block an artery and lead to sudden, severe myocardial ischemia, resulting in a heart attack. Rarely, a blood clot might travel to the coronary artery from elsewhere in the body.
What causes atherosclerosis and what might be done to prevent it?
Aggressively lowering your low-density lipoprotein (LDL) cholesterol — the bad cholesterol — can slow, stop or even reverse the buildup of fatty deposits in your arteries. Statins are commonly prescribed to lower cholesterol, improve artery health and prevent atherosclerosis.
What are the 4 stages of atherosclerosis?
The working theory includes four steps:
- Endothelial cell injury. This is likely the initial factor that begins the process of atherosclerotic plaque formation. …
- Lipoprotein deposition. …
- Inflammatory reaction. …
- Smooth muscle cell cap formation.
Who does atherosclerosis affect?
Atherosclerosis can affect any artery in the body, including arteries in the heart, brain, arms, legs, pelvis, and kidneys.