Most patients with chronic bronchitis, for the most part, show no abnormalities upon lung auscultation. This means their breath sounds are relatively clear, without diminished or enhanced breath sounds, nor any dry or wet rales typically heard. This is the case for the majority of patients; however, a small number of patients during acute exacerbations might present with some dry or wet rales at the back or the base of the lungs. Moreover, these rales may disappear after the patient coughs, indicating that in chronic bronchitis, the sounds heard upon auscultation can change and are not constantly present. You might hear dry or wet rales one moment, and after the patient coughs or receives treatment, these sounds could potentially alleviate. Additionally, if a patient with chronic bronchitis starts to wheeze or develops asthma, they might exhibit sounds such as wheezing or prolonged expiration.