Which abbreviation is used for Electrocardiogram?

The abbreviation used for Electrocardiogram is "EKG" or "ECG". Both abbreviations refer to the same diagnostic test that records the electrical activity of the heart over a period of time.

The distinction between the two abbreviations arises from language differences; "EKG" comes from the German term "Elektrokardiographie," while "ECG" stands for "electrocardiogram." In clinical practice, both abbreviations are widely recognized and accepted, with "ECG" generally being more common in English-speaking countries.

The other options do not relate to the Electrocardiogram. "EtOH" is an abbreviation for ethanol, commonly used in discussions on alcohol. "F/U" stands for follow-up, which is often used in patient care scenarios. "DOE" refers to dyspnea on exertion, a term used to describe shortness of breath during physical activity. Thus, the choice of EKG/ECG is clearly the correct one in this context.