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How Does Coronary Artery Disease Disrupt Homeostasis
Blocks blood flow: Homeostasis is a process whereby the body's systems are kept balanced in good working order. In the heart chemical signals from heart muscle that is not getting enough oxygen will cause blood vessels to dilate and increase the blood flow to those tissues. Coronary artery disease can prevent this increase in blood flow by creating blockages in the coronary arteries. ...Read more
Arteries are defined as blood vessels which carry blood away from the heart (to either the body or lungs). Arteries: higher pressure, thicker walls, stretch (pulse) with each heart contraction & deliver blood to the arterioles which control the flow to individual capillaries. Veins are blood vessels which carry blood from capillaries back to the heart (body to right heart; ...Read more
By blocking the flow: In young, healthy individuals the inner lining of the blood vessels is clean and smooth. Overtime, for many reasons, the inner surface of the heart blood vessels (coronary arteries) may start becoming bumpy/lumpy or blocked due to fat (cholesterol) deposits called "atherosclerotic plaque". This in turn reduces the amount of blood flow available causing "ischemia" (oxygen deprivation). ...Read more
Slowly: Low density lipoprotein (ldl) is taken up by endothelial cells in blood vessels. The LDL is broken down (oxidized) and absorbed by macrophages within the wall of the blood vessel. Ultimately, the macrophage which is full of oxidized LDL will die. The dead cells and cholesterol accumulate in the wall of the artery interfering with the flow of blood. ...Read more
Symptoms/lifespan: Coronary artery disease affects the quality of life and the length of life. Quality of life is affected by reduced functional capacity (ability to do things), chest pain, shortness of breath, loss of employment, and hospitalization. Length of life is reduced as a result of sudden death and myocardial infarction. ...Read more
Does coronary artery disease directly cause ventricular tachycardia or is it after heart attacks and damage etc?
Certainly: Evaluation by a primary care & cardiologist, reduce weight - BMI < 28, eat right: low fat, low (bad) cholesterol, consider high quality fish oil, cessation of smoking, exercise (if you are healthy enough per your physician), reduce alcohol consumption, take prescribed medications as directed. Know your numbers: cholesterol, blood pressure, blood sugar and work with your physician to optimize them. ...Read more
Minimize the Drivers: Optimize lipoprotein concentrations (ldl ; hdl, not cholesterol), low normal blood glucose: hba1c <5.0, low normal bp, don't smoke, stay physically active, confront and resolve stress, etc. This is the best approach. Conventional medical methods, angioplasty, stents, bypass surgery, etc. Only partially treat the symptoms ; further complicate the disease process (i have experience will all these). ...Read more
AtherosclerosisClots: The key issue is atherosclerosis: accumulation of white blood cells in the walls of arteries, typically starts in childhood & is primarily driven by lipoproteins (proteins which transport fat in the water outside cells) is dominant human behavior yet is typically ignored for decades because it remains asymptomatic until plaque ruptures release debris, triggers clots & suddenly blocks blood flow. ...Read more
Cath lab, CT, scans: CT scan can do a calcium count, which is related to disease. Cath lab can create dye studies of the arteries, which show blockage. A myocardial perfusion scan can show abnormal areas of blood flow on the heart, which is related to blocked arteries. 256 bit CT scans are getting very good at showing artery disease also. ...Read more
Several test.: There are several tests for coronary artery disease. A thorough history and physical exam, ekg, ct scan, nuclear studies are all helpful but the best test is a cardiac catheterization. The cardiologist will place a small catheter through a groin vessel up to the heart and inject a special dye into the coronary arteries. The pictures will show if there are any blockages or not. ...Read more
Various: If you're asking how CAD is diagnosed, there are actually many ways. Direct testing can show it (ie stress test, calcium scan, catheterization). We also consider the presence of vascular disease elsewhere in the body to be equiv. To having cad. So if someone has blocked circulation in the legs, or a history of certain kinds of stroke, they'd be treated like they have cad. It's a systemic process. ...Read more
Chest pain: Symptoms from coronary artery disease (CAD) can vary. The most common is angina and can include chest pain as well as pain in the arm, jaw, or abdomen. The pain typically gets worse with activity and better with rest. Shortness of breath can also develop, especially as the heart muscle begins to weaken from inadequate blood flow. ...Read more
Yes: Men have higher rates of CAD and they tend to suffer at an earlier age. This is part of the reason the life expectancy of men is shorter than women. ...Read more
Always: Many stuides show differences among racial lines; my personal opinion is that these really demonstrate differences in socioeconomic levels. I feel it is much more dependent upon income levels and the types of foods and lifestyle a person leads. Lower socioeconomic groups tend to eat foods that are less healthy and engage in alcohol and tobacco use as well as engaging in less exercise. ...Read more
Calcified CAD: Plaque in coronary arteries is in a real sense abnormal tissue. Calcium tends to accumulate in abnormal tissues in our bodies. This phenomenon is called dystrophic calcification. The amount of coronary artery calcium as detected by specialized ct scans can be used as a predictor of future cardiac events such as heart attack. ...Read more
Easy one: Coronary artery disease is the build up of atherosclerotic fat plaques in the arteries of the heart. These can partially block blood flow to the heart muscle causing angina or block completely and cause a heart attack. Hypertension is high blood pressure which can be caused by a variety of medical conditions. ...Read more
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The leading cause of death and disability in adults in the U.S. It develops when lipid (fatty) plaques builds up in the arteries, thereby stopping blood flow to the organ supplied by that artery. If the artery supplies the heart, blockage causes a heart attack. If the blockage is in a brain vessel, the ...Read more
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