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Crackles are the clicking, rattling, or crackling noises that may be made by one or both lungs of a human with a respiratory disease during inhalation, and occasionally during exhalation. They are usually heard only with a stethoscope ("on auscultation"). Pulmonary crackles are abnormal breath sounds that were formerly referred to as rales. [2]
Rales or crackles, abnormal sounds heard over the lungs with a stethoscope A mechanism of sound production in grasshoppers during flight. Also called "wing snapping".
Respiratory sounds, also known as lung sounds or breath sounds, are the specific sounds generated by the movement of air through the respiratory system. [1] These may be easily audible or identified through auscultation of the respiratory system through the lung fields with a stethoscope as well as from the spectral characteristics of lung sounds. [2]
After positioning in which the patient sits upright with their arms at the side, with the chest clear of clothing, the four stages of the examination can be carried out. In order to listen to the lungs from the back the patient is asked to move their arms forward to prevent the scapulae (shoulder blades) from obstructing the upper lung fields.
This type of abnormality is commonly seen in flock worker's lung. Signs and symptoms of flock worker's lung include rales (crackling noises caused by fluid in the lungs), dyspnea (shortness of breath), and coughing. Abnormalities seen on a computed tomography (CT) scan of the lungs can include ground glass opacity and reticular opacity.
Killip class II includes individuals with rales or crackles in the lungs, an S 3, and elevated jugular venous pressure. Killip class III describes individuals with frank acute pulmonary edema . Killip class IV describes individuals in cardiogenic shock or hypotension (measured as systolic blood pressure lower than 90 mmHg), and evidence of ...
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A pulmonic consonant is a consonant produced by air pressure from the lungs, as opposed to ejective, implosive and click consonants. Most languages have only pulmonic consonants. Ian Maddieson, in his survey of 566 languages, [ 1 ] [ 2 ] found that only 152 had ejectives, implosives, or clicks (or two or three of these types) – that is, 73% ...