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Dec 10, 2023 · An EKG/ECG that finds dead tissue of undetermined age in the inferior heart wall is called an “inferior infarct, age undetermined.”. An infarct is heart tissue that dies from a heart attack, which electrocardiograms, or EKG/ECG, detect because the dead muscle no longer contracts, according to WebMD and the American Heart Association.
Feb 12, 2023 · Inferior wall myocardial infarction (MI) occurs from a coronary artery occlusion with resultant decreased perfusion to that region of the myocardium. Unless there is timely treatment, this results in myocardial ischemia followed by infarction. In most patients, the inferior myocardium is supplied by the right coronary artery. In about 6-10% of the population, because of left dominance, the ...
- Matthew J. Warner, Vijai S. Tivakaran
- 2023/02/12
- 2021
Inferior myocardial infarction is primarily caused by the blockage or narrowing of the coronary arteries that supply blood to the inferior wall of the heart. The common causes include: Coronary artery disease: Atherosclerosis, which involves the buildup of plaque in the coronary arteries, is the most common cause of inferior myocardial infarction.
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Some people who have myocardial ischemia don't have any signs or symptoms (silent ischemia).
When they do occur, the most common is chest pressure or pain, typically on the left side of the body (angina pectoris). Other signs and symptoms — which might be experienced more commonly by women, older people and people with diabetes — include:
•Neck or jaw pain
•Shoulder or arm pain
•A fast heartbeat
•Shortness of breath when you are physically active
Get emergency help if you have severe chest pain or chest pain that doesn't go away.
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Myocardial ischemia occurs when the blood flow through one or more of your coronary arteries is decreased. The low blood flow decreases the amount of oxygen your heart muscle receives.
Myocardial ischemia can develop slowly as arteries become blocked over time. Or it can occur quickly when an artery becomes blocked suddenly.
Conditions that can cause myocardial ischemia include:
•Coronary artery disease (atherosclerosis). Plaques made up mostly of cholesterol build up on your artery walls and restrict blood flow. Atherosclerosis is the most common cause of myocardial ischemia.
•Blood clot. 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.
•Coronary artery spasm. This temporary tightening of the muscles in the artery wall can briefly decrease or even prevent blood flow to part of the heart muscle. Coronary artery spasm is an uncommon cause of myocardial ischemia.
Factors that can increase your risk of developing myocardial ischemia include:
•Tobacco. Smoking and long-term exposure to secondhand smoke can damage the inside walls of arteries. The damage can allow deposits of cholesterol and other substances to collect and slow blood flow in the coronary arteries. Smoking causes the coronary arteries to spasm and may also increase the risk of blood clots.
•Diabetes. Type 1 and type 2 diabetes are linked to an increased risk of myocardial ischemia, heart attack and other heart problems.
•High blood pressure. Over time, high blood pressure can accelerate atherosclerosis, resulting in damage to the coronary arteries.
•High blood cholesterol level. Cholesterol is a major part of the deposits that can narrow your coronary arteries. A high level of "bad" (low-density lipoprotein, or LDL) cholesterol in your blood may be due to an inherited condition or a diet high in saturated fats and cholesterol.
•High blood triglyceride level. Triglycerides, another type of blood fat, also may contribute to atherosclerosis.
Myocardial ischemia can lead to serious complications, including:
•Heart attack. If a coronary artery becomes completely blocked, the lack of blood and oxygen can lead to a heart attack that destroys part of the heart muscle. The damage can be serious and sometimes fatal.
•Irregular heart rhythm (arrhythmia). An abnormal heart rhythm can weaken your heart and may be life-threatening.
•Heart failure. Over time, repeated episodes of ischemia may lead to heart failure.
The same lifestyle habits that can help treat myocardial ischemia can also help prevent it from developing in the first place. Leading a heart-healthy lifestyle can help keep your arteries strong, elastic and smooth, and allow for maximum blood flow.
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By Mayo Clinic Staff
May 05, 2021
1.Mahler S, et al. Angina pectoris: Chest pain caused by myocardial ischemia. https://www.uptodate.com/contents/search. Accessed Jan. 31, 2019.
2.Deedwania P, et al. Silent myocardial ischemia: Epidemiology, diagnosis, treatment, and prognosis. https://www.uptodate.com/contents/search. Accessed Jan. 31, 2019.
Mar 21, 2023 · Inferior STEMI. Robert Buttner and Ed Burns. Mar 21, 2023. Home ECG Library. Inferior myocardial infarction (MI) accounts for 40-50% of all MIs. It generally has a more favourable prognosis than anterior myocardial infarction (in-hospital mortality only 2-9%), however certain associated features indicate a worse outcome. ECG diagnostic criteria.
Sep 22, 2020 · Share this: Chapter 2 Inferior Wall Myocardial Infarction Key Points Inferior wall myocardial infarction (IMI) is the most common ST-elevation myocardial infarction (STEMI). The classic features of inferior STEMI are unmistakable: The hallmark is the presence of ST-segment elevations in the “inferior limb leads” – II, III and aVF.
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May 5, 2021 · Sometimes, more-aggressive treatment is needed to improve blood flow. Procedures that may help include: Angioplasty and stenting. A long, thin tube (catheter) is inserted into the narrowed part of your artery. A wire with a tiny balloon is threaded into the narrowed area and inflated to widen the artery.
