A patient with fever and fatigue has hypoalbuminemia (ALB 19 g/L). Which physiological process best explains hypoalbuminemia in acute infection?

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Multiple Choice

A patient with fever and fatigue has hypoalbuminemia (ALB 19 g/L). Which physiological process best explains hypoalbuminemia in acute infection?

During an acute infection the body mounts an inflammatory response that shifts the liver’s protein production toward acute-phase proteins like CRP and fibrinogen, while reducing the synthesis of albumin. Inflammatory cytokines, especially IL-6, drive this shift. At the same time, inflammatory mediators increase capillary permeability, so albumin that normally stays in the intravascular space leaks into the interstitial space. The combination—less albumin being made and more albumin moving out of the blood vessels—lowers plasma albumin levels, producing hypoalbuminemia. This pattern fits acute infection because the change is tied to the immediate inflammatory response, not to chronic liver disease, dehydration, or urinary loss. Chronic liver failure would cause low albumin from impaired synthesis over time; dehydration concentrates proteins and raises measured albumin; nephrotic syndrome causes albumin loss in urine but isn’t driven by an acute infection.

During an acute infection the body mounts an inflammatory response that shifts the liver’s protein production toward acute-phase proteins like CRP and fibrinogen, while reducing the synthesis of albumin. Inflammatory cytokines, especially IL-6, drive this shift. At the same time, inflammatory mediators increase capillary permeability, so albumin that normally stays in the intravascular space leaks into the interstitial space. The combination—less albumin being made and more albumin moving out of the blood vessels—lowers plasma albumin levels, producing hypoalbuminemia.

This pattern fits acute infection because the change is tied to the immediate inflammatory response, not to chronic liver disease, dehydration, or urinary loss. Chronic liver failure would cause low albumin from impaired synthesis over time; dehydration concentrates proteins and raises measured albumin; nephrotic syndrome causes albumin loss in urine but isn’t driven by an acute infection.

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