PQ interval gets lengthened during

Options

A. Rheumatic fever
B. Arteriosclerotic heart (plaque formation)
C. Arteriosclerotic heart (calcification)
D. All of these

Answer

To answer the question "PQ interval gets lengthened during," we need to analyze the options provided and understand the underlying reasons for the lengthening of the PQ interval in each case.

### Step-by-Step Solution:

1. **Understanding the PQ Interval**:
- The PQ interval, also known as the PR interval, is the time taken for the electrical impulse to travel from the atria through the atrioventricular (AV) node and into the ventricles. It is measured on an electrocardiogram (ECG).

2. **Identifying Conditions that Lengthen the PQ Interval**:
- The question provides three conditions: rheumatic fever, aortic sclerotic heart plate formation, and aortic sclerotic heart calcification. We need to examine how each of these conditions affects the PQ interval.

3. **Rheumatic Fever**:
- Rheumatic fever is an inflammatory disease that can affect the heart, blood vessels, and joints. The inflammation can disrupt normal electrical conduction in the heart, leading to a lengthened PQ interval due to delayed conduction through the AV node.

4. **Aortic Sclerotic Heart Plate Formation**:
- Atherosclerosis involves the buildup of plaque (fat, cholesterol, and calcium) in the arteries. This plaque can narrow the arteries and affect blood flow. When the coronary arteries are affected, it can lead to ischemia (reduced blood flow) and impaired conduction, resulting in a lengthened PQ interval.

5. **Aortic Sclerotic Heart Calcification**:
- Calcification in the heart valves or arteries can similarly impede normal electrical conduction. The buildup of calcium can lead to stiffness and reduced elasticity, which can also contribute to a longer PQ interval.

6. **Conclusion**:
- All three conditions—rheumatic fever, aortic sclerotic heart plate formation, and aortic sclerotic heart calcification—can lead to a lengthened PQ interval. Therefore, the correct answer is "all of these."

### Final Answer:
The PQ interval gets lengthened during rheumatic fever, aortic sclerotic heart plate formation, and aortic sclerotic heart calcification. The correct option is **all of these**.

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