Wheeze - Definition

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A wheeze, formally called a sibilant rhonchi, is a clinical symptom revealed during respiratory examination defined as a whistling sound produced by pulmonary auscultation. This whistling is heard on exhaling and is primarily caused by shrinking of the bronchioles as the air passes through them. All conditions characterized by the presence of wheezing are associated with asthma, where wheezing is a diagnostic indication audible on auscultation during attacks.