Which drainage description is most indicative of wound infection in the described case?

• A. Clear serous drainage
• B. Tan-colored foul-smelling drainage
• C. Bright red sanguineous drainage
• D. Opaque green drainage

Answer: (B)

Infection shows up as purulent drainage, which is thick, opaque, and often discolored with a tan or yellow-green hue, typically accompanied by an unpleasant odor. This combination reflects bacteria and inflammatory cells at work in the wound. Clear serous drainage is part of normal healing, not infection. Bright red sanguineous drainage suggests active bleeding rather than infection. Opaque green drainage can occur with infection, but the distinctive sign in this scenario is the tan color plus a foul smell. So the tan-colored foul-smelling drainage is the best indicator of wound infection.