How many exacerbations requiring oral corticosteroids define moderate persistent asthma?

Moderate persistent asthma is characterized by specific criteria regarding symptoms and the frequency of exacerbations. The correct choice is two or more exacerbations requiring oral corticosteroids in the past year. This criterion is part of established guidelines that categorize asthma severity based on symptom frequency and the intensity of treatment needed to manage the condition.

In moderate persistent asthma, the patient typically experiences daily symptoms and may need to use a rescue inhaler daily or several times a week. The definition signifies a notable level of control required to prevent exacerbations, which distinguishes this classification from mild persistent or severe persistent asthma.

The option that states "two or more exacerbations in the past year" indicates the increased need for medication intervention, showing the patient's asthma is not adequately controlled without the use of oral corticosteroids at this frequency. This information is critical when planning treatment and assessing the effectiveness of management strategies in patients with asthma.