What does rhonchi refer to when assessing lung sounds?

Rhonchi refers specifically to a rattling noise that is often caused by the presence of mucus in the airways. When healthcare professionals assess lung sounds, rhonchi can typically be heard during expiration and may indicate that there is some obstruction due to secretions. This rattling sound is generally low-pitched and can suggest conditions such as bronchitis or other situations where mucus is accumulating in the bronchi, making it an important finding during respiratory assessments. Identifying rhonchi can guide clinicians in determining the appropriate interventions needed to clear the airways and improve patient breathing.