Which statement best describes the edema associated with hypoproteinemia?

Which statement best describes the edema associated with hypoproteinemia?

• A. Decreased oncotic pressure leads to edema
• B. Increased oncotic pressure leads to edema
• C. Increased hydrostatic pressure leads to edema
• D. Decreased hydrostatic pressure leads to edema

Answer: (D)

When plasma protein levels fall, the oncotic (colloid) pressure inside vessels decreases. This reduces the force that normally pulls fluid back into capillaries at the venous end, so more fluid escapes into the interstitial space. Over time, that excess interstitial fluid accumulates, producing edema. The hydrostatic pressure that pushes fluid out of capillaries is not the primary driver in this scenario; edema can occur with increased hydrostatic pressure from other causes, but hypoproteinemia mainly causes edema through lower oncotic pressure.

When plasma protein levels fall, the oncotic (colloid) pressure inside vessels decreases. This reduces the force that normally pulls fluid back into capillaries at the venous end, so more fluid escapes into the interstitial space. Over time, that excess interstitial fluid accumulates, producing edema. The hydrostatic pressure that pushes fluid out of capillaries is not the primary driver in this scenario; edema can occur with increased hydrostatic pressure from other causes, but hypoproteinemia mainly causes edema through lower oncotic pressure.