All of the following drugs can precipitate an acute attack of asthma EXCEPT:
**Core Concept**
Asthma is a chronic inflammatory disease characterized by airway hyperresponsiveness, reversible airflow obstruction, and bronchospasm. Various factors, including medications, can trigger acute asthma attacks by inducing bronchospasm or increasing airway inflammation.
**Why the Correct Answer is Right**
The correct answer is **not listed** as it's a "except" question. However, I'll provide a general explanation. Drugs that can precipitate an acute asthma attack typically act by inducing bronchospasm, increasing airway inflammation, or sensitizing the airway to stimuli. Examples include beta-adrenergic blockers (e.g., propranolol), NSAIDs (e.g., ibuprofen, aspirin), and certain antidepressants (e.g., selective serotonin reuptake inhibitors, SSRIs).
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided, but typically, drugs like beta-adrenergic blockers (e.g., propranolol) are known to precipitate asthma attacks by blocking beta-2 receptors in the airway, leading to unopposed alpha-1 receptor-mediated bronchoconstriction.
* **Option B:** This option is not provided, but NSAIDs (e.g., ibuprofen, aspirin) can precipitate asthma attacks by inhibiting cyclooxygenase (COX) enzymes, leading to an imbalance in arachidonic acid metabolism and increased production of leukotrienes, which are potent bronchoconstrictors.
* **Option C:** This option is not provided, but certain antidepressants (e.g., SSRIs) can precipitate asthma attacks by sensitizing the airway to stimuli or increasing the production of inflammatory mediators.
**Clinical Pearl / High-Yield Fact**
When managing patients with asthma, it's essential to consider the potential for medication-induced bronchospasm, particularly with beta-adrenergic blockers, NSAIDs, and certain antidepressants. Always review patients' medication lists and consider alternative treatments to minimize the risk of precipitating an asthma attack.
**Correct Answer:** Not listed, as it's an "except" question.