**Core Concept**
Mendelson's syndrome is a rare but serious condition that occurs when a pregnant woman aspirates gastric contents into her lungs, leading to chemical pneumonitis. This condition is often associated with a rapid and significant decrease in surfactant production, resulting in acute respiratory distress.

**Why the Correct Answer is Right**
The pathophysiology of Mendelson's syndrome involves the aspiration of acidic gastric contents into the lungs, which triggers an intense inflammatory response and damage to the alveolar-capillary membrane. The lack of surfactant production impairs gas exchange and leads to severe hypoxemia. The condition is often fatal if not promptly treated with mechanical ventilation and supportive care.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as Mendelson's syndrome is not typically associated with a primary infection of the lung.
**Option B:** This option is incorrect as Mendelson's syndrome is not primarily caused by a pre-existing lung disease.
**Option C:** This option is incorrect as Mendelson's syndrome is not typically characterized by a significant increase in surfactant production.

**Clinical Pearl / High-Yield Fact**
A key aspect of Mendelson's syndrome is the rapid progression of respiratory failure, often within hours of aspiration. Prompt recognition and treatment are essential to prevent mortality.

**Correct Answer:** Not provided, please provide the options and the correct answer for the question.