Difference Between Rhonchi and Crackles

Key Difference

Rhonchi and crackles are distinct types of abnormal lung sounds. Rhonchi are low-pitched, continuous sounds often described as snoring or gurgling, typically indicating obstruction or secretions in larger airways. Crackles, in contrast, are high-pitched, discontinuous sounds resembling crackling or popping, often associated with fluid in the small airways or at the alveoli.

Comparative Analysis

1. Sound Characteristics:
   • Rhonchi: Low-pitched, snoring-like.
   • Crackles: High-pitched, popping.
2. Indicative Conditions:
   • Rhonchi: Obstruction in larger airways.
   • Crackles: Fluid in small airways or alveoli.

Table Summary of Rhonchi vs Crackles

Feature	Rhonchi	Crackles
Sound Characteristics	Low-pitched, continuous	High-pitched, discontinuous
Indicative Conditions	Larger airway obstruction	Fluid in small airways/alveoli

Recognizing the differences between rhonchi and crackles is crucial in respiratory diagnosis, as each sound indicates different underlying lung conditions.