Pseudomembrane

Definition

A pseudomembrane is a layer of exudate resembling a membrane, which forms on mucous membranes during infections. It is commonly associated with bacterial infections like diphtheria.

5 Must Know Facts For Your Next Test

1. Pseudomembranes are often formed by Corynebacterium diphtheriae in the throat or respiratory tract.
2. They can cause airway obstruction due to their location and size.
3. The membrane consists of dead cells, bacteria, fibrin, and inflammatory cells.
4. Pseudomembranous formation can be a diagnostic sign of diphtheria.
5. Treatment often includes antitoxins and antibiotics to manage the infection and reduce the pseudomembrane.

Review Questions

• What type of bacteria commonly causes pseudomembrane formation in the respiratory tract?
• What are the primary components that make up a pseudomembrane?
• How does a pseudomembrane contribute to complications in respiratory infections?

Related terms

Diphtheria: A serious bacterial infection caused by Corynebacterium diphtheriae that affects the mucous membranes of the throat and nose.

Exudate: Fluid composed of serum, fibrin, and white blood cells that leaks out of blood vessels into nearby tissues during inflammation.

Antitoxin: An antibody used to neutralize toxins produced by pathogens, often used in treating diseases like diphtheria.