Epsilon wave is seen in
**Core Concept**
Epsilon waves are a type of abnormal electrocardiogram (ECG) finding associated with a specific cardiac condition. They are a high-frequency, low-amplitude wave seen in the terminal portion of the cardiac cycle, often in the leads V1-V3.
**Why the Correct Answer is Right**
Epsilon waves are characteristic of arrhythmogenic right ventricular cardiomyopathy (ARVC), a condition that affects the right ventricle of the heart. In ARVC, epsilon waves are thought to represent abnormal electrical activity in the right ventricle, particularly in the areas affected by fibrofatty replacement. These waves are often seen in patients with ARVC, especially during periods of increased physical activity or stress.
**Why Each Wrong Option is Incorrect**
**Option A:** is incorrect because epsilon waves are not typically associated with hypertrophic cardiomyopathy, a condition characterized by thickening of the heart muscle.
**Option B:** is incorrect because epsilon waves are not a feature of Wolff-Parkinson-White syndrome, a condition that involves an accessory electrical pathway in the heart.
**Option C:** is incorrect because epsilon waves are not a characteristic finding in long QT syndrome, a condition that affects the heart's electrical activity and can lead to abnormal heart rhythms.
**Clinical Pearl / High-Yield Fact**
Epsilon waves are a critical diagnostic feature of ARVC, and their presence can help differentiate this condition from other causes of right ventricular dysfunction.
**Correct Answer:** C.