The ECG sign of subendocardial ischemia is ST segment depression. Note that ECG is used more now that EKG.
in myocadial ischemia, pain radiate to jaw, neck,shoulder,arm wheras in aortic dissection pain radiate to back, between scapulae there is differense between pulse rate of both arms and leg depending on ecg changes
A biphasic T wave in an ECG reading can indicate various heart conditions, such as electrolyte imbalances, myocardial ischemia, or drug effects. It may suggest an increased risk of arrhythmias or cardiac events, requiring further evaluation and monitoring by a healthcare provider.
Abnormalities in the T wave on an ECG can indicate conditions such as myocardial ischemia, electrolyte imbalances, or certain heart diseases. These abnormalities may include T wave inversion, flattening, or peaking, which can provide important information about the heart's electrical activity and potential health issues.
T-wave inversion can be seen in various conditions, including myocardial ischemia, myocardial infarction, electrolyte imbalances, pericarditis, myocarditis, and certain medications affecting the heart's electrical conductivity. It is important to consider clinical context and other ECG findings when interpreting T-wave inversions.
ST abnormality refers to abnormal changes in the ST segment of an electrocardiogram (ECG). It can indicate myocardial ischemia, injury, or infarction. ST abnormalities are important indicators of heart conditions and often prompt further evaluation and treatment.
< A myocardial infarction.
myocardial infarction
Peaked T waves on an electrocardiogram (ECG) indicate a potential problem with the heart's electrical activity, which could be a sign of conditions like hyperkalemia or myocardial infarction.
Conditions such as hypokalemia (low potassium levels) or myocardial ischemia can contribute to a reduction in the size of the T wave on an electrocardiogram (ECG). These conditions can affect the repolarization phase of the cardiac action potential, leading to changes in the T wave morphology.
ECG Machine is the process of producing an electrocardiogram( ECG or EKG), a recording of the heart's electrical activity. It's an electrogram of the heart which is a graph of voltage versus time of the electrical activity of the heart using electrodes placed on the skin. These electrodes detect the small electrical changes that are a consequence of cardiac muscle depolarization followed by repolarization during each cardiac cycle( heartbeat). Changes in the normal ECG pattern occur in numerous cardiac abnormalities, including cardiac rhythm disturbances( such as atrial fibrillation and ventricular tachycardia), inadequate coronary artery blood flow( such as myocardial ischemia and myocardial infarction), and electrolyte disturbances( such as hypokalemia and hyperkalemia).
Ischaemia is the lack of blood supply to a tissue which start anaerobic respiratory mechanisms. Infarction is cell death through apoptosis resulting from prolonged or severe ischaemia. Clinicaly myocardial infarction will be more painful and is unrelieved by rest. On ECG infarction will reult in ST segment elevation where ischaemia will result in ST segment depresion (unless it is a posterior MI!). In MI there will also be raised biochemical markers hours later such as creatine kinase and troponin.
recent MI is after the 24hrs from the symptoms onset with Q wave on the ECG