Question

Epiglottitis is a potentially life-threatening disease because the patient's airway can become completely obstructed (blocked) if not treated. Which bacterium usually causes this disease?

Answer 1

Epiglottitis is commonly associated with Haemophilus influenzae type b (Hib) and can lead to airway obstruction, which is life-threatening. The diphtheria pathogen Corynebacterium diphtheriae causes a pseudomembrane that can also obstruct the airway, although it is a separate condition.

Step-by-step explanation:

Epiglottitis is a disease that can cause a life-threatening obstruction of the airway due to swelling of the epiglottis. While epiglottitis can be due to a variety of bacterial pathogens, it is most commonly associated with Hib (Haemophilus influenzae type b), which was historically a major cause of epiglottitis in children before widespread vaccination efforts.

The pseudomembrane formation mentioned in your question is a classic sign of diphtheria, which is caused by Corynebacterium diphtheriae and can also cause obstruction of the airway. However, this is distinct from epiglottitis, which is primarily associated with Hib. In advanced cases of either disease, medical intervention such as intubation may be required to maintain an open airway.