Stages of Sepsis

What are the 3 Stages of Sepsis?

Sepsis

Definition: The body has a confirmed or suspected infection and shows a systemic inflammatory response.

Symptoms:

  • Fever or abnormally low body temperature
  • Rapid heart rate
  • Rapid breathing
  • Elevated or low white blood cell count

Key Point: At this stage, the body is reacting to an infection, but organ function is still intact.

Severe Sepsis

Definition: Sepsis plus organ dysfunction or hypoperfusion (inadequate blood flow).

Symptoms:

  • Decreased urine output
  • Sudden mental confusion or disorientation
  • Difficulty breathing
  • Low platelet count
  • Abnormal heart function
  • Abdominal pain

This stage indicates that organs are starting to fail, and immediate medical intervention is critical.

Septic Shock

Definition: A severe form of sepsis where blood pressure drops dangerously low and does not respond to fluid replacement.

Symptoms:

  • Persistent hypotension (low blood pressure)
  • Elevated lactate levels (indicating poor oxygen delivery to tissues)
  • Multi-organ failure

This is the most life-threatening stage, with a high risk of death (30–50% mortality rate).