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<p>Lung sounds made easy From the general practice to the ICU, lung sounds tell you a great deal about a patient and their relative health. However, knowing the difference between rales, a crackle, and a wheeze is sometimes still a confusing proposition for many health professionals, especially new grads. Part of the reason for that is that some of the language is interchangeable. For instance, crackles actually are rales, and the large amount of words can leave anyone's head spinning. Knowing what to call what you hear on the other end of the stethoscope can tell you – and </p>