A 50-year-old male presented to the ER with new onset chest pain which was progressively increasing in nature and it was a tearing kind of pain. The pain had been persisting for more than 20 minutes. ECG was conducted. After the ECG, patient was immediately put on the thrombolysis therapy. The aery involved in the above case is accompanied by which vein: –

**Core Concept**
The underlying principle being tested is the identification of a coronary artery involved in an acute myocardial infarction, based on the symptoms and ECG findings. The **coronary arteries** supply blood to the heart muscle, and their occlusion can lead to myocardial infarction.

**Why the Correct Answer is Right**
The correct answer is related to the coronary artery most commonly involved in myocardial infarctions. The **anterior interventricular branch** of the **left coronary artery**, also known as the **left anterior descending (LAD) artery**, is often referred to as the "widowmaker" due to its high frequency of involvement in fatal myocardial infarctions. The LAD artery is accompanied by the **great cardiac vein**.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately describe the vein accompanying the coronary artery involved in the majority of myocardial infarctions.
**Option B:** This option is also incorrect as it does not specify the correct vein accompanying the LAD artery.
**Option D:** This option is incorrect because it does not relate to the coronary artery typically involved in myocardial infarction.

**Clinical Pearl / High-Yield Fact**
The LAD artery is the most commonly occluded artery in myocardial infarctions, and its occlusion can lead to significant morbidity and mortality. Early recognition and thrombolysis can significantly improve outcomes.

**Correct Answer:** Correct Answer: D. Great Cardiac Vein

✓ Correct Answer: A. Great cardiac vein