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American EMT Academy Week III Practice Test

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At the onset of an acute asthma attack, patients commonly experience difficulty breathing and:
Correct Answer:
Expiratory wheezing.
Explanation:
In an acute asthma attack, the airway narrowing from bronchospasm in the lower airways creates turbulent airflow that is most audible during expiration, producing an expiratory wheeze. This is a classic early sign as air is forced through constricted bronchioles, so the sound is heard mainly on the out-breath. Audible stridor would point to upper airway blockage rather than the lower-airway narrowing seen in asthma. Profound cyanosis is a late sign of severe hypoxemia, not an initial presenting feature, and rales or rhonchi reflect fluid or mucus in the airways or alveoli rather than the primary wheeze of bronchospasm.

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