Purulent

Definition

Purulent describes discharge, exudate, or fluid containing pus, a thick, opaque fluid composed of dead white blood cells, bacteria, and tissue debris. It is a hallmark of bacterial infection.

Characteristics

• Color: yellow, green, or brown
• Thick consistency
• Foul odor (especially anaerobic)
• Can be localized (abscess) or systemic

Clinical Sources

• Wounds with infection
• Abscesses
• Purulent sputum (pneumonia)
• Purulent drainage from surgical sites
• Purulent nasal discharge (bacterial sinusitis)
• Purulent conjunctivitis

Nursing Interventions

Obtain culture and sensitivity before antibiotics. Wound care with sterile technique. Administer appropriate antibiotics. Monitor for systemic infection/sepsis. Educate on infection prevention.

NCLEX Relevance

Purulent drainage = bacterial infection.