What lung sounds are described as low pitched, discontinuous sounds upon auscultation?

The correct response refers to coarse crackles, which are characterized as low-pitched and discontinuous sounds that can be heard during auscultation of the lungs. These sounds typically arise from the sudden opening of small airways and alveoli that may have collapsed or filled with fluid. Coarse crackles are often associated with conditions such as pneumonia, bronchitis, or pulmonary edema, where either fluid or mucus is present in the airways, creating the distinctive sound as air moves through these obstructed passages.

These sounds are distinguishable from fine crackles, which are higher-pitched and often have a more fleeting quality. Fine crackles generally indicate more localized changes in the lung tissue or certain diseases like restrictive lung disorders. Wheezes, in contrast, are continuous, high-pitched sounds resulting from the narrowing of airways, often occurring in asthma or COPD. Stridor is a specific type of wheeze that is heard during inhalation and usually indicates a higher airway obstruction, such as in cases of croup or foreign body aspiration.

Understanding the differences in lung sounds is crucial for clinicians to identify underlying pulmonary conditions accurately.