Listen to rales here on the Medzcool YouTube channel. Rales are usually broken up into more specific types, based on the way they sound. When these tiny sacs are damaged or weighed down with fluid or mucus, they can make a crackling sound as they attempt to fill with air. These are tiny sacs of air and inflate and deflate with each breath. This usually occurs in the smaller parts of the lungs, like the alveoli. These sounds are formed when air moves into closed spaces. ![]() The terms rales or crackles have been used interchangeably and are usually a matter of preference, not a difference in the condition. Rales are a higher-pitched sound sometimes called crackles or bibasilar crackles. Listen to rhonchi here on the Medzcool YouTube channel. Sudden (acute) pulmonary edema requires immediate treatment. Symptoms include shortness of breath and difficulty breathing. It can occur due to nonheart-related conditions, too. A main cause of pulmonary edema is congestive heart failure. Cheyne-Stokes lung noises, also called the death rattle, include wheezes, rattles, and high-pitched whistles. The different types of lung sounds can be heard best in the following locations: Bronchial lung sounds: over the large airways in the anterior chest near the second and third intercostal spaces. The sound you hear is the the sound the air makes as it moves around the blockage. Pulmonary edema is a buildup of fluid in your lungs. Pleural friction noises, also known as pebbles friction, are a particular kind of lung sound that emanates from the front side of the lungs and is brought on by the friction of the pleural layers. These sounds are produced when there is something blocking the airway, like fluid. Find out what causes them and when someone should seek medical attention. During expiration, the sound intensity can diminish somewhat. Adventitious lung sounds are sounds that occur in addition to normal breath sounds. These sounds are low to moderate sound intensity (volume) with a low-pitch (200-600 Hz) and with a rustling quality. Rhonchi can either come and go on and inhale or exhale or be heard continuously. Vesicular lung sounds are the most common auscultated sounds, usually heard over most of the chest wall. It can be heard on an inhale or exhale, and it’s often compared to the sound of snoring. This low-pitched sound that usually starts in the larger airways in the lungs. The difference between the two is in the pitch and the exact cause of the sound. This documentation indicates that the expected sound (vesicular) was heard, specifies where it was heard (majority of the lung fields), notes the absence of any additional (adventitious) sounds, and explicitly mentions some of the specific sounds you listened for but did not hear (wheezing, crackles, rhonchi, stridor).Rales and rhonchi can both be coarse, even crackling sounds. No wheezing, crackles, rhonchi, or stridor.” “Normal vesicular breath sounds heard over the majority of the lung fields. This means that you heard the expected breath sounds and there were no abnormal or extra sounds. If lung sounds are normal, they’re often described as “clear to auscultation bilaterally” or “CTAB” (an abbreviation of the same phrase). When charting normal lung sounds, it’s important to be concise, clear, and descriptive.
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