A wheeze is a clinical symptom of a continuous, coarse, whistling sound produced in the respiratory during breathing.
The differential diagnosis of wheezing is wide, and the reason for wheezing in a given patient is determined by considering the characteristics of the wheezes and the historical and clinical findings made by the examining physician.
The term "wheeze" is also used as a clinical condition describing wheezing in preschool children, termed as "preschool wheeze".
Clinical symptom
Wheeze
Wheezes occupy different portions of the respiratory cycle depending on the site of airway obstruction and its nature. The fraction of the respiratory cycle during which a wheeze is produced roughly corresponds to the degree of airway obstruction.
disease usually causes wheezing that occurs in the expiratory phase of respiration. As a rule, extrathoracic airway obstruction produce inspiratory sounds. Intrathoracic major airway obstruction produces inspiratory as well as expiratory sounds. Distal airway obstruction predominantly produces expiratory sounds.
The presence of expiratory phase wheezing signifies that the patient's Spirometry is less than 50% of normal.
The location of the wheeze can also be an important clue to the diagnosis. Diffuse processes that affect most parts of the lungs are more likely to produce wheezing that may be heard throughout the chest via a stethoscope. Localized processes, such as the occlusion of a portion of the respiratory tree, are more likely to produce wheezing at that location, hence the sound will be loudest and radiate outwardly. The pitch of a wheeze does not reliably predict the degree of narrowing in the affected airway.
Stridor
A special type of wheeze is
stridor. Stridor — the word is from the Latin,
strīdor[Simpson JA, Weiner ESC (eds). " stridor, n. 2." Oxford English Dictionary 2nd ed. Oxford: Clarendon Press, 1989. OED Online Oxford University Press. Accessed September 10, 2005. http://dictionary.oed.com .] — 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 as the fabled pediatric peanut)."
Stridor in the inspiratory phase is usually heard with obstruction in the upper airways, such as the trachea, epiglottis, or larynx; because a block here means that no air may reach either lung, this condition is a medical emergency. Biphasic stridor (occurring during both the inspiratory and expiratory phases) indicates narrowing at the level of the
glottis or
subglottis, the point between the upper and lower airways.
Preschool wheeze
Preschool wheezing is a clinical condition that describes wheezing preschool children that do not fulfill the criteria of "
asthma" fully as asthma would require a person to demonstrate a history of at least three episodes of
(worsening of symptoms) or chronic cough or wheeze for the past six months.
Besides, a number of wheezing preschool children would have their symptoms resolved after they had grown up, unlike asthma which persists into adulthood. Preschool wheezing can be divided into "viral-induced wheeze" and "multi-trigger wheeze". Viral-induced wheezing accounts for about two-thirds of all preschool wheezes. The wheezing symptom is episodic and the child is completely normal in between wheezing episodes. It has a good prognosis and only supportive treatment is required. Meanwhile, multi-trigger wheezing is associated with allergy and a family history of asthma. Symptoms occur in between wheezing episodes and are likely to persist beyond early childhood. Due to difficulty in differentiating both types of wheeze, the diagnosis of viral-induced versus multi-trigger wheeze may be delayed for a period of time until its clinical course has become clear.
To wheeze (slang)
To wheeze implies an inability to speak clearly, so in politics it refers to an
Heterodoxy or less than
ethical maneuver that is not actually illegal, but relies on an element of deception or sleight of hand, being an intermediate between a
workaround and a
scam.
[ Word Reference Wheeze Accessed 02 July 2024]
In this context wheezing is notably linked with the slang expression Joe Blow meaning any external person or group beyond a secretive fraternity.[ Vocabulary.com: Joe Blow Accessed 02 July 2024] (See also insider trading.)
See also
Further reading
External links
