Which of the following is given in the maintenance of severe persistent asthma?
**Core Concept**
Severe persistent asthma requires long-term control medication to prevent exacerbations and maintain lung function. This involves the use of inhaled corticosteroids (ICS) or oral corticosteroids, in addition to bronchodilators, to control inflammation and prevent airway remodeling.
**Why the Correct Answer is Right**
The correct answer is **C. Oral Corticosteroids (OCS)**. Oral corticosteroids are used in the maintenance of severe persistent asthma due to their potent anti-inflammatory effects, which help to reduce airway inflammation and prevent exacerbations. They work by inhibiting the production of pro-inflammatory cytokines, such as IL-1 and TNF-alpha, which contribute to airway inflammation and damage.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because inhaled corticosteroids (ICS) are the first-line treatment for persistent asthma, but they may not be sufficient to control severe persistent asthma. ICS are effective in reducing airway inflammation, but they may not be enough to prevent exacerbations in severe cases.
**Option B:** This option is incorrect because leukotriene modifiers are used as add-on therapy to ICS in mild to moderate persistent asthma, but they are not sufficient to control severe persistent asthma.
**Option D:** This option is incorrect because bronchodilators, such as beta-agonists, are used as rescue medications to relieve acute symptoms, but they do not provide long-term control of severe persistent asthma.
**Clinical Pearl / High-Yield Fact**
Remember that oral corticosteroids should be used judiciously in severe persistent asthma, as long-term use can lead to side effects such as osteoporosis, glaucoma, and cataracts. Regular monitoring of bone density and eye exams are essential in patients on long-term oral corticosteroids.
**Correct Answer:** C. Oral Corticosteroids (OCS)