what does an abnormal electrocardiogram mean
An abnormal EKG can mean many things. Sometimes EKG abnormalities are a normal variation of a heartâs rhythm, which does not affect your health. Other times, an abnormal EKG can signal a medical emergency, such as a myocardial infarction (heart attack) or a dangerous arrhythmia. Ischemia, or lack of blood flow, may also cause an abnormal EKG. 2  Heart rate abnormalities. 3  A typical human heart rate is between 60 and 100 beats per minute. 4  An EKG can determine if the heart is beating too fast or too slow.