A school-age client with asthma has been monitoring their daily peak expiratory flow rates(PEFR). The client's mother calls the clinic to report that the PEFR was at 45% of their personal best. Which guidance should the nurse provide to the mother?

A. A PEFR of 45% of the personal best indicates a moderate asthma exacerbation, but immediate hospitalization is not necessarily required unless there are severe symptoms or other indicators of serious distress. B. At 45% of the personal best PEFR, the child is experiencing a moderate asthma exacerbation. The recommended action is to use a quick-relief inhaler like albuterol, which is effective in providing immediate relief. Inhaled corticosteroids are part of the long-term management but should not replace the use of a quick-relief inhaler during an exacerbation. C. Salmeterol is a long-acting beta-agonist used for maintenance therapy and is not typically used for acute exacerbations. Albuterol is preferred in this situation for immediate relief. D. While monitoring PEFR is important, action should be taken when PEFR falls below 50% of the personal best, and more immediate intervention is needed at 45% of the personal best.