In this case, expiratory wheezes are heard over most of the chest wall. This may indicate airflow obstruction, for example in patients with mild to moderate obstruction in asthma. Note normal inspiratory breath sounds.
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Wheezes are adventitious lung sounds that are continuous with a musical quality. Wheezes can be high or low pitched. High pitched wheezes may have an auscultation sound similar to squeaking. Lower pitched wheezes have a snoring or moaning quality.

The proportion of the respiratory cycle occupied by the wheeze roughly corresponds to the degree of airway obstruction.

Wheezes are caused by narrowing of the airways.