Question

which of the following medication classes should be avoided in patients with acute or chronic bronchitis because it will contribute to ventilation - perfusion mismatch in the patient? xanthines antihistimines steroids anticholinergics

Explanation:

Antihistamines can dry up secretions and thicken mucus in patients with bronchitis. This can lead to ventilation - perfusion mismatch as the air - blood exchange in the lungs is affected. Steroids reduce inflammation, xanthines can improve airway function, and anticholinergics can relax airway smooth muscles, none of which typically cause significant ventilation - perfusion mismatch in the context of bronchitis like antihistamines can.

Answer:

Antihistamines