This is a rapid review series introductory course. Evaluating breath sounds is a key component to any physical exam. This assessment helps to identify the presence of respiratory and/or cardiac conditions. By identifying potential issues with or changes in the respiratory and/or cardiac systems, you will be better able to prevent unnecessary hospital readmissions. The procedure used for this assessment is called auscultation, which is the examination technique in which you listen to the internal sounds of the body. Breath sounds are assessed by auscultating the lungs. Listening to the lungs allows you to assess the flow of air through the bronchial tree and identify any adventitious, or additional, sounds heard over the normal breath sounds.