NAECB Practice Exam 2025 – Complete Study Resource

A patient presenting with an oxygen saturation of 89% on room air signifies a serious decline in respiratory function. Normal oxygen saturation levels typically range from 95% to 100%. When saturation drops below 90%, it indicates significant respiratory distress and potential hypoxemia, which is a critical consideration in asthma management.

In terms of asthma exacerbations, this scenario aligns with a late warning sign. Late warning signs often include severe symptoms that are indicative of worsening asthma, such as marked shortness of breath, rapid breathing, and compromised oxygenation. The absence of audible bronchovesicular sounds further emphasizes the severity of the situation, suggesting that the patient might have very limited airflow, potentially due to severe bronchoconstriction or inflammation.

Recognizing the oxygen saturation of 89% as a late warning sign is key, as it indicates that the patient requires immediate assessment and intervention to prevent further deterioration. Understanding these indicators is crucial for effective asthma management and timely response to exacerbations.