**Question:** Clinical manifestations of acute glomerulonephritis include which of the following?

A. Proteinuria
B. Hematuria
C. Hypertension
D. Edema

**Core Concept:** Acute glomerulonephritis is an inflammation of the glomeruli, which are small blood vessels in the kidneys responsible for filtering blood and maintaining fluid and electrolyte balance. This inflammation can lead to various clinical manifestations due to impaired kidney function.

**Why the Correct Answer is Right:** The correct answers represent the core clinical manifestations of acute glomerulonephritis:

1. **A. Proteinuria:** Proteinuria refers to the presence of protein in the urine. In acute glomerulonephritis, inflammation and damage to the glomeruli cause proteins to leak into the urine, leading to proteinuria. This is a key clinical sign of glomerulonephritis.

2. **B. Hematuria:** Hematuria refers to the presence of blood in the urine. Inflammation and damage to the glomeruli can cause rupture of red blood cells, leading to hematuria. This is another key clinical sign of glomerulonephritis.

3. **D. Edema:** Edema occurs as a result of fluid retention and impaired kidney function in acute glomerulonephritis. The kidneys cannot effectively filter out excess fluid, leading to fluid buildup in the body and manifesting as edema.

4. **C. Hypertension:** While hypertension is a potential complication of chronic glomerulonephritis, it is not a direct manifestation of acute glomerulonephritis itself. Hypertension may result from long-term damage to the kidneys, but it is not a primary symptom in acute glomerulonephritis.

**Why Each Wrong Option is Incorrect:**

5. **A. Proteinuria (Option C):** Although hypertension can occur as a complication of chronic glomerulonephritis, it is not a primary symptom in acute glomerulonephritis. Hypertension may result from long-term damage to the kidneys, but it is not a primary symptom in acute glomerulonephritis.
6. **B. Hematuria (Option D):** While hematuria is a direct manifestation of acute glomerulonephritis, it is not a manifestation of hypertension. Hypertension can be an indirect consequence of glomerulonephritis but is not the primary symptom.
7. **C. Edema (Option D):** While edema can be a consequence of acute glomerulonephritis, it is not a direct symptom. Edema occurs as a result of fluid retention rather than acute glomerulonephritis itself.
8. **D. Edema (Option C):** Edema can be a consequence of acute glomerulonephritis, but it is not a direct symptom. Edema results from fluid retention, not the acute glomerulonephritis itself. Hypertension is a secondary issue but is not the primary symptom in acute glomerulonephritis.

**Clinical Pearls:**

Edema (Option C) and hypertension (