As a medical professional with expertise in cardiology, I can provide you with an understanding of ST wave abnormalities on an electrocardiogram (ECG). An ST wave abnormality on an ECG is a deviation from the normal shape and position of the ST segment and T wave, which are components of the heart's electrical activity as recorded by the ECG. The ST segment represents the period between the end of the ventricular depolarization (the QRS complex) and the beginning of ventricular repolarization (the T wave). Abnormalities in this segment can indicate various cardiac conditions. T wave abnormalities might present as being flat, oddly-shaped, or inverted. These changes can reflect issues such as electrolyte imbalances, drug effects, or underlying heart conditions. The ST segment itself can show several types of abnormalities: - ST elevation: This can be a sign of acute myocardial infarction (heart attack), pericarditis (inflammation of the sac around the heart), or other conditions that cause damage to the heart muscle. - ST depression: This may indicate myocardial ischemia (reduced blood flow to the heart), which can be due to coronary artery disease. - J point elevation: A slight elevation at the J point (the junction of the QRS complex and the ST segment) can be a normal variant, but more significant elevations may suggest other cardiac issues. It's important to note that the interpretation of ECG findings must be done in the context of the patient's symptoms, medical history, and other diagnostic information. An isolated ST wave or T wave abnormality may not necessarily indicate a serious condition and could be a normal variant in some individuals. read more >>

Maybe the T wave is flat, oddly-shaped or inverted. Maybe the ST segment is coved, very minimally-depressed or shows some J point elevation. ... Similarly, ST segment abnormalities on the ECG can sometimes be due to a specific cause, such as ST segment elevation myocardial infarction, pericarditis or myocardial ischemia.read more >>