MDC3 Practice Test

Wheezing disappearing as fatigue increases signals worsening status asthmaticus because it shows air movement is dropping, not improving. In severe asthma, wheezes come from turbulent airflow through narrowed airways. As the attack worsens and the patient tires, respiratory muscles fail to sustain movement of air, so there’s less airflow overall and the chest may become quiet. That “silent chest” is a dangerous sign that the obstruction is severe and the patient may be heading toward respiratory failure, requiring urgent escalation of treatment. The other scenarios don’t indicate deterioration in the same way. A productive cough after a bronchodilator could reflect mucus production but isn’t a direct marker of worsening severity. Increased air entry throughout the chest isn’t typical in worsening asthma, where air trapping usually dampens breath sounds rather than increasing them. Stable oxygen saturation with quiet breathing suggests stability, not decline.