Which statement regarding the acute abdomen is correct?

• A. The most common cause of an acute abdomen is inflammation of the gallbladder and liver.
• B. An acute abdomen almost always occurs as the result of blunt trauma to solid abdominal organs.
• C. The initial pain associated with an acute abdomen tends to be vague and poorly localized.
• D. The parietal peritoneum is typically the first abdominal layer that becomes inflamed or irritated.

Answer: (C)

Pain in an acute abdomen often starts as visceral pain from stretched or inflamed organs. This type of pain is usually dull and poorly localized, sometimes felt in a broad area or referred to a distant site. As the problem progresses and irritation spreads to the parietal peritoneum, the pain becomes sharp and precisely localized to the affected region, often with guarding. This progression makes the initial, vague, poorly localized pain the best description of early acute abdomen symptoms.

The other ideas aren’t as accurate because many conditions can trigger an acute abdomen, not just gallbladder or liver inflammation. Blunt trauma to solid organs is not the typical starting cause in most cases. And parietal peritoneum irritation tends to occur after the initial visceral involvement, so it isn’t the first layer to become inflamed.