A nonspecific T wave abnormality, often abbreviated as NSST-T, is a term used to describe certain changes in the T wave on an electrocardiogram (ECG) that do not fit into any of the well-defined categories of T wave abnormalities associated with specific heart conditions. These changes are common and can be seen in a variety of situations, including in healthy individuals, in response to stress, or due to various other factors such as electrolyte imbalances, medications, or underlying heart disease. It's important to note that while NSST-T wave changes are not specific indicators of a particular heart problem, they can sometimes be associated with conditions like ischemic heart disease or acute myocardial infarction (heart attack). However, they are not definitive and should be interpreted in the context of the patient's overall clinical presentation and other diagnostic information. read more >>

Although very common, nonspecific ST-T (NSST-T) wave changes on ECG are often misunderstood, poorly explained to patients, or prematurely dismissed by clinicians. ... For some patients, specific ECG abnormalities are present that indicate or strongly suggest ischemic heart disease or acute MI.read more >>