Most fatal thrombosis leading to myocardial infarction is of

Options

A. Right circumflex coronary artery
B. Righ coronary artery
C. Left anterior descending artery
D. Left circumflex coronary artery

Answer

To solve the question regarding which thrombosis is most fatal leading to myocardial infarction, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Thrombosis**:
- Thrombosis refers to the formation of a blood clot within a blood vessel, which can obstruct blood flow.

2. **Define Myocardial Infarction**:
- Myocardial infarction, commonly known as a heart attack, occurs when blood flow to a part of the heart is blocked, leading to permanent damage to the heart muscle.

3. **Identify the Cause of Myocardial Infarction**:
- The blockage in myocardial infarction is primarily due to thrombosis in the coronary arteries, which supply blood to the heart muscle.

4. **Recognize the Importance of Coronary Arteries**:
- The coronary arteries are crucial as they provide oxygenated blood to the heart. If these arteries are blocked, the heart muscle does not receive enough oxygen, leading to damage.

5. **Evaluate Symptoms of Myocardial Infarction**:
- Common symptoms include chest pain, pain radiating to the neck, and pain in the arms. Recognizing these symptoms is vital for timely medical intervention.

6. **Identify the Most Affected Artery**:
- Research and clinical evidence indicate that the left anterior descending (LAD) artery is often the most affected artery in cases of myocardial infarction. This artery supplies blood to the anterior portion of the left ventricle, which is critical for heart function.

7. **Conclusion**:
- Based on the information gathered, the most fatal thrombosis leading to myocardial infarction is associated with the left anterior descending artery (LAD).

### Final Answer:
The correct answer is **left anterior descending artery**.

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