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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.
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]
Stertor (from Latin stertere ' to snore ') is a term first used in 1804 [2] to describe a noisy breathing sound, such as snoring. [3] [4] It is caused by partial obstruction of the upper airways, at the level of the nasopharynx or oropharynx. [1] It is distinguished from stridor by its pitch. [4]
Stridor a high-pitched musical breath sound resulting from turbulent air flow in the larynx or lower in the bronchial tree. [23] It is not to be confused with stertor. Causes are typically obstructive, including foreign bodies, croup, epiglottitis, tumours, infection and anaphylaxis.
Fine crackles are soft, high-pitched, and very brief. This sound can be simulated by rolling a strand of hair between one's fingers near the ears or by moistening one's thumb and index finger and separating them near the ears. Their presence usually indicates an interstitial process, such as pulmonary fibrosis or congestive heart failure.
The patient may exhibit dysphonia or have diminished breath sounds, and rapid breathing is common. [3] Coughing may be present, [11] and stridor, an abnormal, high-pitched breath sound indicating obstruction of the upper airway can also occur. [12]
Signs of shock include cold, sweaty skin, as well as rapid breathing and a weak, rapid pulse. Call 911 if you notice signs of shock, as it needs immediate medical attention. 12.
A special type of wheeze is stridor. Stridor — the word is from the Latin, strīdor [9] — is a harsh, high-pitched, vibrating sound that is heard in respiratory tract obstruction. Stridor heard solely in the inspiratory phase of respiration usually indicates an upper respiratory tract obstruction, "as with aspiration of a foreign body (such ...