Which statement best describes the progression of untreated sepsis?

Which statement best describes the progression of untreated sepsis?

• A. Septic shock can progress to multi-organ dysfunction
• B. All infections resolve without complications
• C. Sepsis only affects the lungs
• D. Septic shock never occurs

Answer: (A)

Untreated sepsis progresses from a widespread inflammatory response to septic shock and then to multi-organ dysfunction because the body's attempt to fight infection ends up injuring its own tissues and disrupting blood flow to vital organs. In sepsis, inflammatory mediators cause vasodilation and capillary leakage, which reduces effective circulating blood volume and tissue perfusion. When perfusion becomes severely compromised, cells shift to anaerobic metabolism, lactic acid builds up, and organ function begins to deteriorate. If blood pressure remains dangerously low despite fluids, vasopressor support is needed, signaling septic shock with persistent hypoperfusion. Ongoing hypoxia and inflammation can then damage multiple organs—kidneys, liver, lungs (potential ARDS), brain, and coagulation systems—leading to multi-organ dysfunction. This progression reflects a systemic, escalating problem rather than a single-organ issue or a guaranteed favorable outcome. In contrast, infections do not always resolve without complications, and sepsis is not limited to the lungs, nor is septic shock impossible.

Untreated sepsis progresses from a widespread inflammatory response to septic shock and then to multi-organ dysfunction because the body's attempt to fight infection ends up injuring its own tissues and disrupting blood flow to vital organs. In sepsis, inflammatory mediators cause vasodilation and capillary leakage, which reduces effective circulating blood volume and tissue perfusion. When perfusion becomes severely compromised, cells shift to anaerobic metabolism, lactic acid builds up, and organ function begins to deteriorate. If blood pressure remains dangerously low despite fluids, vasopressor support is needed, signaling septic shock with persistent hypoperfusion. Ongoing hypoxia and inflammation can then damage multiple organs—kidneys, liver, lungs (potential ARDS), brain, and coagulation systems—leading to multi-organ dysfunction. This progression reflects a systemic, escalating problem rather than a single-organ issue or a guaranteed favorable outcome. In contrast, infections do not always resolve without complications, and sepsis is not limited to the lungs, nor is septic shock impossible.