**Core Concept:** Peritonitis is an inflammation of the peritoneum, the serous membrane that lines the abdominal cavity. Ruptured diverticulitis is a form of peritonitis caused by the inflammation spreading to the abdominal cavity from a ruptured diverticulum in the colon. Treatment depends on the severity of the condition and the patient's clinical presentation.

**Why the Correct Answer is Right:**

The correct answer is **D.** Conservative management with broad-spectrum antibiotics, analgesics, and intravenous fluids, followed by surgical intervention if the patient deteriorates. This approach is chosen for patient who presents with mild to moderate signs and symptoms of peritonitis, mild to moderate tachycardia, and normal or slightly elevated temperature. These patients usually have adequate lactate levels.

**Why Each Wrong Option is Incorrect:**

Option **A.** Surgical management is preferred for patients presenting with severe signs and symptoms of peritonitis, hypotension, and hyperpyrexia. These patients have low lactate levels, indicating tissue hypoperfusion.

Option **B.** Conservative management is not recommended for patients with severe signs and symptoms of peritonitis, hypotension, and hyperpyrexia. These patients have low lactate levels, indicating tissue hypoperfusion.

Option **C.** Conservative management is a suitable choice for patients with severe signs and symptoms of peritonitis, hypotension, and hyperpyrexia. These patients have low lactate levels, indicating tissue hypoperfusion.

**Clinical Pearl:**

In cases of peritonitis due to ruptured diverticulitis, the treatment approach should be based on the patient's clinical presentation. Conservative management is appropriate for mild to moderate cases, while surgical intervention is necessary for severe cases. Assessing lactate levels can help determine the severity of peritonitis and guide management decisions.

**Correct Answer:** Conservative management