| Test 117
A 72-year-old man with severe emphysema has had worsening right ventricular failure for the past 5 years. For the past 4 days, he has had fever and increasing dyspnea. A chest radiograph shows an accumulation of fluid in the pleural spaces. Fluid obtained by thoracentesis has a specific gravity of 1.030 and contains degenerating neutrophils. The most likely cause of this fluid accumulation is an increase in which of the following mechanisms?
Colloid osmotic pressure
Lymphatic pressure
Vascular permeability
Renal retention of sodium and water
Leukocytic diapedesis
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