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How can EKG identify a myocardial infarction?
An EKG tells us about how electricity flows through the cells of the heart. Any infarction of cardiac tissue causes changes in the way the electricity travels. An EKG can show us these changes and help us to even identify where the infarction is occurring. A 12 lead EKG must be done to truly identify any infarction. The 12 lead shows us 12 different views of the electricity as it moves from one lead to another. By comparing the views we get against what would normally be expected and comparing each lead to the others we can look for changes in the EKG pattern (ST elevation or depression is the most obvious, but many other changes exist).
What are EKG changes associated with an inferior STEMI?
An STEMI, or ST-segment Elevation Myocardial Infarction, is a condition in which the blood flow to the heart is blocked. This typically occurs due to rupture of a lipid plaque in the wall of an epicardial artery. This causes muscle cell death due to lack of oxygen and other substrates necessary for cell growth/maintenance. The EKG can be used to localize the likely location of the blockage by looking at changes on the EKG. An inferior STEMI is characterized by ST elevations in the inferior limb leads, leads II, III, and aVF, associated with ST depressions (called reciprocal changes) in the lateral limb leads, I and aVL. An inferior STEMI most commonly is associated with a blockage in the right coronary artery (80% of the time). Inferior STEMIs have a slightly better prognosis than anterior MIs. There is typically less heart muscle lost in association with inferior STEMI than when the MI affects the bulkier left side of the heart.
What changes in the ECG might occur as a result of an acute heart attack?
ST segment elevation quite commonly occurs, but isn't a necessary requirement. Sometimes EKG changes are very subtle, or even nonexistent, initially.
What wave of the EKG occurs during depolarization of the ventricle?
QRS
Will an EKG rule out a heart attack?
An EKG cannot rule out a heart attack. It gives a snap shot of the hearts electrical circuit at that moment. An EKG can show some changes indicative that there may be cardiac problems, as well as if you are actively having a particular type of heart attack (known as a STEMI).But you can be having a heart attack with no EKG changes. The definitive answer comes from blood work done at the hospital.
What is point between qrs and st segment on ekg called?
what does isoelectric line represent
What do fish feel changes in the water around it?
A fish's lateral line feel changes in the water around it.
Which way did mt st helens erupt?
Sideways (Lateral Blast).
What does an st elevation on an ekg mean?
An ST elevation could possibly be acute Ischemia and if you were given this information in accordance with a recent ECG or EKG i would not hesitate to get a second opinion or check yourself into the nearest hospital for further examination. The ST segment of an ECG represents ventricular repolarization. This basically means that the cardiomyocytes in the heart and preparing for the heart to beat once again, preparing for another cardiac cycle. When their appear to be changes in the ST segment then this represents the hearts inability to sufficiently prepare for a reoccuring cardiac cycle and may cause significant damage leading to such illnesses or medical issues as Ischaemia and even chronic cardiac failure.
Some fish have a lateral line that is used to detect?
vibrations and pressure changes
What is a series of pits on the side of a fish to detect vibrations and pressure changes?
lateral line
When do you standardize an EKG?
before and after you run EKG
