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How Does The Body Try To Compensate For Coronary Ischemia By Growing New Vessels
Good question: Through biochemical mechanisms stimulated by decreased blood flow to areas of the heart, small collateral arteries can form as branches of the larger coronary arteries in order to maintain as much blood supply to the heart as possible. These collateral arteries can often prevent permanent damage to the heart, but they rarely normalize the blood flow necessary for normal heart function. ...Read moreSee 1 more doctor answer
Ischemia is a symptom in which a person does not have enough blood supply to a part of the body, making that part of the body "ischemic". For example, in a heart attack, a coronary artery is blocked so blood cannot get to the heart muscle beyond the blockage point. The heart muscle lacking ...Read more
Coronary ischemia: The body will try to limit activity in order to decrease ischemia, so some people will feel fatigue or shortness of breath. Also often people have angina or chest pain with activity which limits activity. On the local level small vessels called collateral vessels can grow to bypass the blockage. ...Read moreSee 1 more doctor answer
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
Blood flow limited: It means that the heart muscle is not getting enough blood flow to meet its metabolic demands to carry out the required activities. This usually connotes a narrowing ("blockage") in one of the major coronary arteries that supplies heart muscle with blood, and hence oxygen. ...Read moreSee 1 more doctor answer
Ischemia: Ischemia means inadequate blood flow. This can happen because the large size blood vessels are narrowed. It can also happen with normal large vessels and abnormal small blood vessels causing the inadequate flow. This is 'small vessel ischemia'. We don't have surgery or stents for 'small vessels' at this time. ...Read more
45 yo f MRIs: .
2009:3 foci of white matter hyperintensity. Possible remote small vessel ischemia
2015:scattered areas of hyperintensity.
Hard to know: Radiologists are trained to report on images without knowing anything about a patient. This way, everything gets included; even findings that are normal for most people. For a person with family history of early onset dementia and cardiovascular disease, for example, these findings could be meaningful. You can consider a virtual c/s w/ neurologist to review the images and in context. ...Read more
Not necessarily: Angina is a symptom of chest discomfort. Heart cells die only when the blood supply to the heart is stopped for at least 20 minutes. Angina may occur with no stoppage of blood to the heart, or it may occur in the presence of a damaging heart attack, known as myocardial infarction. ...Read moreSee 1 more doctor answer
Overlap: Cardiac ischemia can be the result of coronary artery disease, cad, the latter being a progressive disease that can result in plaque/cholesterol building up in the coronary arteries and these stenoses or blockages can impair blood flow to the heart.Ischemia is the condition of blood flow and so oxygen being kept from a part of the body; cardiac ischemia is when this deprivation occurs in heart. ...Read moreSee 2 more doctor answers
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