In sepsis management, what does a high lactate level indicate?

• A. Indicates improved tissue perfusion and stability.
• B. Indicates tissue hypoperfusion and severity of sepsis; guides intensity of resuscitation.
• C. Only reflects liver function.
• D. Has no prognostic value in sepsis.

Answer: (B)

High lactate in sepsis signals tissue hypoperfusion and greater illness severity. When tissues aren’t getting enough oxygen, cells switch to anaerobic metabolism and produce more lactate, so a high level reflects metabolic stress from inadequate perfusion. Clinically, this lactate elevation helps gauge how aggressively to resuscitate and, importantly, how a patient is responding to treatment; watching for lactate clearance over time informs prognosis and guides ongoing care.

This isn’t a sign of improved tissue perfusion, so that option doesn’t fit. It’s not solely a reflection of liver function—although the liver clears lactate, the elevation in sepsis mainly points to perfusion and metabolic stress. And yes, lactate carries prognostic value: higher levels are associated with worse outcomes, and failure to clear lactate after resuscitation suggests a higher risk.