The correct answer is 1. Purulent sputum refers to respiratory secretions or phlegm that contain pus - a viscous, yellowish, or greenish fluid that consists of dead white blood cells, bacteria, and tissue debris.
The correct answer is 1. Purulent sputum refers to respiratory secretions or phlegm that contain pus - a viscous, yellowish, or greenish fluid that consists of dead white blood cells, bacteria, and tissue debris.