What does rhonchi indicate when heard in the lungs?

Rhonchi are characterized by a low-pitched, rattling sound that can be heard during expiration and occasionally during inspiration. This sound typically indicates the presence of mucus or fluid in the larger airways of the lungs. When a healthcare provider assesses lung sounds and detects rhonchi, it is often a sign that the patient may be experiencing conditions associated with mucus production, such as bronchitis or chronic obstructive pulmonary disease (COPD). The presence of this rattling sound suggests that air is passing through obstructed airways where mucus or secretions are present, offering important insight into the patient’s respiratory status. This understanding helps clinicians determine appropriate interventions to assist in clearing the airways.