What characterizes the condition known as sepsis?

• A. The presence of symptoms of SIRS
• B. A low blood pressure reading
• C. A known site of infection
• D. Both a and c

Answer: (D)

Sepsis is characterized primarily by the presence of symptoms of systemic inflammatory response syndrome (SIRS) along with a known site of infection. SIRS refers to a systemic response to infection or other inflammatory conditions, manifested through symptoms like fever, increased heart rate, increased respiratory rate, and abnormal white blood cell counts. This systemic response indicates that the body is reacting vigorously to an infection.

In sepsis, not only are there signs of SIRS, but there must also be evidence of an underlying infection, which is often identifiable through a specific site of infection. This combination of systemic symptoms and localized infection is crucial in diagnosing sepsis and differentiating it from other inflammatory conditions. Therefore, both the presence of SIRS symptoms and a known site of infection are necessary to characterize the condition effectively.