Which type of drainage indicates active bleeding and is bright red?

Sanguineous drainage is characterized by the presence of bright red blood, indicating fresh or active bleeding. This type of drainage typically occurs immediately after surgery or in the presence of trauma, reflecting the body's response to injury through the release of blood. The vibrant color signifies oxygen-rich arterial blood, which is a critical detail in assessing a patient's condition.

In contrast, purulent drainage is associated with infections and contains pus, presenting as yellow, green, or brown and not indicating fresh bleeding. Serous drainage is clear or straw-colored, resembling serum from blood, indicating fluid rather than active bleeding. Serosanguineous drainage is a mixture of serum and blood, which appears pink or light red, but does not represent active bleeding to the same extent as sanguineous drainage.