Coarse rales are abnormal lung sounds that can be heard during breathing. They are often described as low-pitched, rattling noises and are typically associated with the presence of fluid or mucus in the airways. These sounds can indicate conditions such as pneumonia, bronchitis, or congestive heart failure. Healthcare professionals use a stethoscope to listen for coarse rales during a physical examination. The presence of these sounds can help in diagnosing respiratory issues and determining the appropriate treatment. Monitoring coarse rales is important for managing conditions related to the lungs and ensuring patient care.