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A wheeze is a clinical symptom of a continuous, coarse, whistling sound produced in the respiratory airways during breathing. [1] For wheezes to occur, part of the respiratory tree must be narrowed or obstructed (for example narrowing of the lower respiratory tract in an asthmatic attack), or airflow velocity within the respiratory tree must be heightened.
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]
Usually spoken sounds of a whispered volume by the patient would not be heard by the clinician auscultating a lung field with a stethoscope. However, in areas of the lung where there is lung consolidation, these whispered spoken sounds by the patient (such as saying 'ninety-nine') will be clearly heard through the stethoscope. This increase in ...
Stridor (from Latin 'creaking/grating noise') is an extra-thoracic high-pitched breath sound resulting from turbulent air flow in the larynx or lower in the bronchial tree. It is different from a stertor, which is a noise originating in the pharynx. Stridor is a physical sign which is caused by a narrowed or obstructed airway.
Egophony (British English, aegophony) is an increased resonance of voice sounds [1] heard when auscultating the lungs, often caused by lung consolidation and fibrosis.It is due to enhanced transmission of high-frequency sound across fluid, such as in abnormal lung tissue, with lower frequencies filtered out.
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% ...
Squawks, or short wheezes, are brief, "squeaky" sounds; they are also referred to as squeaks. Their waveforms show a sinusoidal pattern with a duration 10 to 100 ms and a frequency between 200 and 800 Hz. Many birds have made sounds which are onomatopoeically described as "squawk".
The sounds from interstitial pulmonary fibrosis have been described as sounding like opening a Velcro fastener. Coarse crackles are somewhat louder, lower in pitch, and last longer than fine crackles. Their presence usually indicates an airway disease, such as bronchiectasis.