Which of the following is a key step in the management of mild to moderate acute asthma?

Maintaining an oxygen saturation (SpO2) of 94% or above is a fundamental aspect in the management of mild to moderate acute asthma. Ensuring adequate oxygenation is crucial, particularly during an asthma attack, as it reflects the patient's respiratory function and the effectiveness of their airway management. Keeping SpO2 at this level minimizes the risk of hypoxemia and associated complications, allowing the body to maintain necessary organ function.

In mild to moderate asthma exacerbations, the primary focus is often on treating bronchoconstriction and ensuring the patient remains stable. Although other interventions, such as administering bronchodilators or corticosteroids, are vital, maintaining adequate oxygenation directly impacts the patient's overall well-being and recovery.

While other options mentioned may be relevant in certain contexts (such as magnesium sulfate for severe asthma or intubation for critical cases), they are not standard or necessary in the management of mild to moderate asthma exacerbations. Continuous albuterol nebulization can be beneficial but is more commonly applied in severe cases rather than mild to moderate situations. Thus, ensuring SpO2 levels are adequate is a primary, essential goal in effective asthma management.