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Dry air easily dries out the airways, leading to irritation that can cause swelling and other asthma symptoms. Cold air also causes more histamine production, which is what the body makes during ...
Asthma triggers are factors or stimuli that provoke the exacerbation of asthma symptoms or increase the degree of airflow disruption, which can lead to an asthma attack. [1] An asthma attack is characterized by an obstruction of the airway , hypersecretion of mucus and bronchoconstriction due to the contraction of smooth muscles around the ...
Audi displayed a new show car variant of the second generation Audi TT – the Audi TT Clubsport quattro, at the 2008 Wörthersee Tour at Pörtschach am Wörthersee in Austria. [39] Shown only in an open-topped "speedster" variant, its 2.0 TFSI engine has been tuned to give 221 kW (300 PS; 296 bhp). [ 39 ]
This is probably caused by the release of prostaglandins. The underlying cause of this type of bronchoconstriction appear to be the large volume of cool, dry air inhaled during strenuous exercise. The condition appears to improve when the air inhaled is more fully humidified and closer to body temperature.
In children, the most common triggers are viral illnesses such as those that cause the common cold. [22] Exercise or intense use of respiratory system—the effects of which differ somewhat from those of the other triggers, since they are brief. They are thought to be primarily in response to the exposure of the airway epithelium to cold, dry air.
Asthma phenotyping and endotyping has emerged as a novel approach to asthma classification inspired by precision medicine which separates the clinical presentations of asthma, or asthma phenotypes, from their underlying causes, or asthma endotypes. The best-supported endotypic distinction is the type 2-high/type 2-low distinction.
Some strategies used in designing aftermarket cold air intakes are: Reworking parts of the intake that create turbulence to reduce air resistance. [2] Providing a more direct route to the air intake by eliminating muffling devices. Shortening the length of the intake. Placing the intake duct to use the ram-air effect to give positive pressure ...
The cause for acute severe asthma attacks is still unknown and experts are also unsure of why it developed and why it does not respond to typical asthma treatments. [7] [medical citation needed] Not seeing a doctor regularly, therefore asthma is not under good control; Coming in contact with asthma triggers; Allergies or severe allergic reactions