A heart " murmur" disorder indicates a defect of

Options

A. (a) heart valve
B. (b) bundle of His
C. (c) sinoatrial node
D. (d) Atrioventricular node

Answer

**Step-by-Step Solution:**

1. **Understanding Heart Murmur:**
- A heart murmur is an abnormal sound produced during the heartbeat cycle. It is often described as a whooshing or swishing sound.
- This sound is typically caused by turbulent or abnormal blood flow within the heart.

2. **Identifying the Cause of Heart Murmur:**
- Heart murmurs can arise from various issues, primarily related to the heart valves.
- Abnormal blood flow can occur if the heart valves do not open or close properly, leading to conditions like stenosis (narrowing of the valve) or regurgitation (backward flow of blood).

3. **Types of Defects Associated with Heart Murmur:**
- **Structural Defects:** These can be congenital (present at birth) or acquired. Congenital defects might include malformed heart valves or septal defects (holes in the heart).
- **Chronic Conditions:** Conditions such as chronic high blood pressure or calcification of the heart valves can also lead to murmurs.

4. **Chronic Heart Disease:**
- If a heart murmur is persistent and associated with symptoms, it may indicate underlying chronic heart disease, which can be serious and may require medical intervention.

5. **Treatment Options:**
- In severe cases, treatment may involve surgical procedures such as valve replacement to correct the defect causing the murmur.

6. **Conclusion:**
- Therefore, a heart murmur disorder indicates a defect in the heart valves, which are crucial for maintaining proper blood flow within the heart.

**Final Answer:**
A heart murmur disorder indicates a defect in the heart valves.

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