Results 181 to 190 of about 32,302 (223)

Exercise-Induced Bronchoconstriction

Drugs, 2002
Exercise-induced asthma, or more appropriately, exercise-induced bronchoconstriction (EIB), occurs in 80 to 90% of individuals with asthma and in approximately 11% of the general population without asthma. EIB is characterised by post-exercise airways obstruction resulting in reductions in forced expiratory volume in 1 second (FEV(1)) of greater than ...
openaire   +2 more sources

Perception of Bronchoconstriction in Chronic Asthma

Journal of Asthma, 1992
Twenty-nine asthmatic children were studied to assess their ability to detect the severity of their bronchoconstriction. First (STEP 0): each child was asked if he "felt asthma," inviting him to give a self-estimated obstruction score (SEOS) from 0 (no asthma) to 3 (severe asthma) and a baseline FEV1 was recorded.
BONER, Attilio, De Stefano G, PIACENTINI, Giorgio, Bonizzato C, Sette L, Banfi F, Hindi Alexander Mc   +6 more
openaire   +3 more sources

The Homeostatic Rôle of Bronchoconstriction

Respiration, 2001
This article argues in favour of the hypothesis that the homeostatic rôles of bronchoconstriction are to retract the airway tree during expiration, and to assist in the expulsion of mucus from peripheral airways by increasing the velocity of outgoing air.
openaire   +2 more sources

Pathophysiology of Asthmatic Bronchoconstriction

CHEST Journal, 1982
T he major resistance airways of human subjects are innervated by at least three different types of autonomic nerves. The specific physiologic “advantage” to this homeostatic system for regulation of bronchomotor tone is uncertain; however, some degree of bronchomotor tone results from parasympathetic innervation in all normal individuals.
openaire   +2 more sources

Effects of Ketotifen on in vitro bronchoconstriction

Clinical & Experimental Allergy, 1985
SummaryWe have studied the effects of Ketotifen [Ke](10−4M and 10−6M) on two in vitro models of bronchoconstriction: actively sensitized guinea‐pig trachea (GPT), and passively sensitized human bronchial muscle (HBM). Experiments were performed on matched pairs of tissues.
B G, Loftus, J F, Price, R, Heaton, J F, Costello   +3 more
openaire   +2 more sources

Testing for Exercise-Induced Bronchoconstriction

Immunology and Allergy Clinics of North America, 2018
Exercise-induced bronchoconstriction (EIB) is a form of airway hyperresponsiveness that occurs with or without current symptoms of asthma. EIB is an indicator of active and treatable pathophysiology in persons with asthma. The objective documentation of EIB permits the identification of an individual who may be at risk during a recreational sporting ...
Brannan, John D., Porsbjerg, Celeste
openaire   +3 more sources

Effects of inhaled monoethanolamine on bronchoconstriction

Journal of Applied Toxicology, 2008
AbstractWe previously reported a 65‐year‐old man who aspirated an alkaline detergent containing 3.3% w/v (weight of solute per volume of solution) monoethanolamine (MEA) into his lungs, causing asthma‐like symptoms. We presently describe the mechanism of MEA‐induced bronchoconstriction according to findings in guinea pigs. In anesthetized, artificially
Y, Kamijo, I, Hayashi, A, Ide, K, Yoshimura, K, Soma, M, Majima   +5 more
openaire   +2 more sources

Exercise-Induced Bronchoconstriction in Athletes

Chest, 2005
Exercise-induced bronchoconstriction (EIB) describes airway narrowing that occurs in association with exercise. EIB occurs in up to 90% of asthmatic patients and is estimated to occur in > 10% of the general population. Recent reviews have identified asthma as a risk factor for sudden death and have reported many deaths that have been attributed ...
Jonathan P, Parsons, John G, Mastronarde
openaire   +2 more sources

Exercise-induced bronchoconstriction: Pathogenesis

Current Allergy and Asthma Reports, 2005
There is still active debate on the acute mechanism of exercise-induced bronchoconstriction (EIB). Although it is unlikely that vasoconstriction and hyperemia of the bronchial vasculature are essential events for EIB, it is likely that this vasculature enhances the airway response to dehydration and contributes to the pathogenesis of EIB, particularly ...
Sandra D, Anderson, Pascale, Kippelen
openaire   +2 more sources

Detection of Excessive Bronchoconstriction in Asthma

American journal of respiratory and critical care medicine, 1996
Abstract Airway hyperresponsiveness is easily assessed by measuring the concentration or dose of an inhaled agonist that produces a defined response, e.g., PC20 or PD20. However, this measure does not assess excessive bronchoconstriction.
W J, Gibbons, A, Sharma, D, Lougheed, P T, Macklem   +3 more
openaire   +2 more sources