Q wave abnormalities are not always problematic. There are some patients who present with Q wave abnormalities that may be non-specific Q waves. In clinical practice, pathologic Q waves are meaningful and represent a patient who has had a myocardial infarction. Pathologic Q waves are defined as Q waves with a width greater than 0.04 seconds and a height greater than 1/4 of the R wave in the same lead, which is called pathologic Q waves. There are some patients who have abnormal Q waves but the rest of the leads or related leads do not meet the criteria of pathological Q waves, this is not a big problem and regular review of the ECG is sufficient.