What are rales?

Rales refer to abnormal lung sounds often described as crackles or a wet crackling noise. These sounds occur when air moves through fluid or mucus in the lungs or when air sacs (alveoli) pop open during inhalation. This phenomenon is typically indicative of underlying respiratory conditions, such as pneumonia, congestive heart failure, or chronic obstructive pulmonary disease (COPD). Recognizing rales during a physical examination can assist veterinary technicians in identifying potential issues within the respiratory system of animals, allowing for timely intervention and appropriate care.

Understanding rales is crucial for effective patient assessments, as they provide important clues about the state of an animal's lungs and overall health. The other options describe different sounds or functions that are not associated with rales.