What causes a borderline ekg?

A borderline EKG, or electrocardiogram, typically indicates that the heart's electrical activity is near normal but shows some minor deviations that may not be clinically significant. This can be caused by factors such as electrolyte imbalances, variations in heart rate, or structural heart changes. Conditions like anxiety, medications, or even normal anatomical variations can also contribute to borderline results. It's important for a healthcare provider to interpret these findings in the context of the patient's overall clinical picture.