Rales, or crackles, are discontinuous, interrupted, or explosive lung sounds. They may sound like pulling velcro open. The sounds can be short and high-pitched, or they may last a bit longer and be lower-pitched. Your doctor is more likely to hear crackles when you’re breathing in, but...
Cracklesare also known asalveolar ralesand are the sounds heard in a lung field that has fluid in the small airways. Crackles create fine, short, high-pitched, intermittently crackling sounds. The cause of crackles can be from air passing through fluid, pus or mucus. They are commonly heard ...
Crackles are intermittent, nonmusical, and brief adventitious lung sounds that can be heard on inspiration and sometimes during expiration. They are classified as fine or coarse depending on their frequency and duration; fine crackles have high frequency and short duration, whereas coarse crackles ...
Adventitious lung sounds may be discontinuous or continuous. Crackles are the most common cause of the former, whereas wheezes are the most common cause of the latter. The focus of this chapter is on describing the sound quality and consistency that are associated with both sounds so that a ...
Lung sounds, also called breath sounds, can be auscultated across the anterior and posterior chest walls with a stethoscope. Adventitious lung sounds are referenced by terms such as crackles (rales), wheezes (rhonchi), stridor and pleural rubs as well as voiced sounds that include egophony, ...
COPD lung sounds present with distinct features that differentiate them from other respiratory conditions. Wheezes, for example, are high-pitched musical sounds that occur during exhalation when narrowed airways create turbulence. Crackles, on the other hand, are intermittent popping or rattling noises ...
Crackles:Abnormal bubbling sounds heard in air cells or bronchi. Succussion-splash or hippocratic succussion:A splashing sound produced by the presence of air and liquid in the chest. It may be elicited by gently shaking the patient during auscultation. This sound nearly always indicates either a...
Lung sounds byDiane Wrigley, PA Respiratory cases:William French David Lieberman, Audio Engineering Heart sounds mentorship byW. Proctor Harvey, MD Special thanks for the medical mentorship ofDr. Raymond Murphy Reviewed byDr. Barbara Erickson, PhD, RN, CCRN. ...
In fact, morphological characters of crackles can be well represented by time amplitude distribution. Thus, they convey significant diagnostic information, for their precise timing in the respiratory cycle, their repeatability, and shape all mightily correlate with pulmonary diseases. The ability to ...
Compared with shallow machine learning, most deep learning-based methods adopt an end-to-end learning approach to automatically learn the representation of lung sounds from raw acoustic signals without the need for handcrafted feature engineering. They can also leverage transfer learning to increase ...