bronchial hyperreactivity

bronchial hyperreactivity

Etymology: Gk, bronchos + hyper, excess; L, re, again, agere, to act
an abnormal respiratory condition characterized by reflex bronchospasm in response to histamine or a cholinergic drug, such as methacholine. It is a universal feature of asthma and is used in the differential diagnosis of asthma and heart disease.
References in periodicals archive ?
Effect of high thoracic epidural anesthesia and local anesthetic on bronchial hyperreactivity.
Upper airway inflammation exacerbates bronchial hyperreactivity in mouse models of rhino-sinusitis and allergic asthma.
Diarrhea and bronchial hyperreactivity, two adverse events known to be associated with propranolol, were more common with active treatment than with placebo but were mild or moderate in severity.
19 In the latter study, suspected asthma patients with either positive or negative bronchial hyperreactivity to histamine challenge were evaluated.
This study showed that the two methods for detection of airway hyperresponsiveness have a high degree of concordance, probably indicating that both methods promote bronchial hyperreactivity as the triggering mechanism of bronchospasm.
Although the researchers do not yet understand why asthma results from reduced production of sphingolipids, their experiments clearly show a link between loss of these lipids and bronchial hyperreactivity, a key feature of asthma.
If the PC20 is <4 mg/mL, bronchial hyperreactivity is occurring (positive test result); if PC20 is 4-16 mg/mL, borderline bronchial hyperreactivity is occurring; and if the PC20 is >16 mg/mL, the test result is considered normal.
Bronchial hyperreactivity in patients with endobronchial tuberculosis.
physiological studies which show that some AR patients with no perceived asthma develop bronchial hyperreactivity (BHR) during AR exacerbation, and these are apparently the patients at risk of developing asthma (4), (9), (10);
For example, alcohol consumption has been associated with increased bronchial hyperreactivity (6) and increased frequency of severe asthma attacks (i.
Increasing sensitisation to house dust mites increases the risk of increased bronchial hyperreactivity in Xhosa children
Asthma is characterized by airway inflammation that causes bronchial hyperreactivity.