During which phase of breathing do rales typically occur?

Rales, also known as crackles, are abnormal lung sounds that are typically heard during the inspiration phase of breathing. They occur when air moves through fluid-filled or inflamed airways, leading to a popping or crackling sound. This can often be associated with conditions such as pneumonia, heart failure, or pulmonary edema, where fluid is present in the lungs.

Understanding the phase of breathing when rales are generated is crucial for healthcare professionals, as it aids in diagnosing respiratory conditions. By listening for these sounds during inspiration, clinicians can gather significant information about the patient’s pulmonary status. This highlights the importance of recognizing abnormal lung sounds in the examination of respiratory health.