**Core Concept**
Systemic Inflammatory Response Syndrome (SIRS) is a clinical condition characterized by a non-specific inflammatory response to a variety of insults, including infection, trauma, burns, and pancreatitis. The SIRS criteria help identify patients at risk of developing more severe conditions such as sepsis, severe sepsis, and septic shock.

**Why the Correct Answer is Right**
The SIRS criteria include two or more of the following: body temperature 38°C, heart rate > 90 beats per minute, respiratory rate > 20 breaths per minute or PaCO2 12,000 cells/mm³ or < 4,000 cells/mm³. These criteria are designed to detect a systemic inflammatory response in patients, which can be caused by a variety of conditions. **Why Each Wrong Option is Incorrect** **Option A:** This option is not provided. **Option B:** This option is not provided. **Option C:** This option is not provided. **Option D:** This option is not provided. **Clinical Pearl / High-Yield Fact** It is essential to note that the SIRS criteria have limitations and are not specific for infection. Therefore, a diagnosis of sepsis requires clinical judgment, laboratory evidence of infection, and a systemic inflammatory response as indicated by the SIRS criteria. **Correct Answer:** .