Abnormal breath sounds can indicate a lung duduk perkara, such as an obstruction, inflammation, or infection. learn about breath sounds and what they may mean. Lung sounds: what do they mean? wheezing crackling (rales) stridor rhonchi whooping pleural friction rub mediastinal crunch tests. This is the sound of rhonchi when auscultating breath or lung sounds. it is caused by thick secretions in large airways as air passes by. seen often in patie. Depending on breath sounds heard on auscultation as well as symptoms and risk factors, other tests may be recommended. 1. chest x-ray: it's important to note that while a chest x-ray can be very helpful in diagnosis, a negative chest x-ray can't necessarily rule out several lung conditions. for example, chest x-rays miss up to 25% of lung cancers. 2. lateral soft tissue x-ray of the neck: on x-ray, the "thumb sign" may be seen with epiglottitis 3. chest ct scan: to look for tumors, foreign bodies, and much more 4. vq scan (ve...