- Author:Clive P. Page,Phillip J. Gardiner
- Publisher:Wiley-Blackwell; 1 edition (May 5, 1993)
- Pages:352 pages
- Subcategory:Medicine & Health Sciences
- FB2 format1624 kb
- ePUB format1573 kb
- DJVU format1101 kb
- Formats:azw lit mbr mobi
Bronchial hyperresponsiveness (or other combinations with airway or hyperreactivity, BH used as a general abbreviation) is a state characterised by easily triggered bronchospasm.
Bronchial hyperresponsiveness (or other combinations with airway or hyperreactivity, BH used as a general abbreviation) is a state characterised by easily triggered bronchospasm (contraction of the bronchioles or small airways). Bronchial hyperresponsiveness can be assessed with a bronchial challenge test. This most often uses products like methacholine or histamine. These chemicals trigger bronchospasm in normal individuals as well, but people with bronchial hyperresponsiveness have a lower threshold.
Airways Hyperresponsiveness book.
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The present study investigates the development and maintenance of airway hyperresponsiveness in neonatally immunized rabbits. The thromboxane (TXA2) receptors on rat and guinea-pig lung strips were compared using TXA2 agonists and TXA2 receptor antagonists. On rat lung strip several TXA2 mimetics were full agonists whilst the primary prostanoids lacked agonist activity.
We evaluated 150 nonsmoking volunteers 18 to 55 yr of age; 100 athletes divided into four subgroups of 25 subjects each according to the predominant estimated hydrocaloric characteristic of ambient air inhaled during training: dry air (DA), cold air (CA), humid air (HA) and a mixture of dry and humid air (MA), and 50 sedentary subjects.
Airway hyperresponsiveness (AHR) and airway inflammation are key pathophysiological features of asthma. Bronchial provocation tests (BPTs) are objective tests for AHR that are clinically useful to aid in the diagnosis of asthma in both adults and children. BPTs can be either "direct" or "indirect," referring to the mechanism by which a stimulus mediates bronchoconstriction. Direct BPTs refer to the administration of pharmacological agonist (. methacholine or histamine) that act on specific receptors on the airway smooth muscle.
Strongyloides venezuelensis migrates through the lungs and induces airway hyperresponsiveness (AHR). Strongyloides venezuelensis migrates through the lungs and induces airway hyperresponsiveness (AHR).
In people without hyperresponsiveness, the airways relax to help you expel the irritant. In some people with asthma, the airways do not relax and actually get smaller. This narrowing of the airways makes it more difficult to breathe
In people without hyperresponsiveness, the airways relax to help you expel the irritant. This narrowing of the airways makes it more difficult to breathe. When you use your rescue inhaler, you feel better because the medication relaxes your airways and makes them larger so that air can flow more easily.
Other readers will always be interested in your opinion of the books you've read. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. 1. Overview of Neural Mechanisms in Asthma. File: PDF, 585 KB. 2. Neutral Endopeptidase Inhibition Increases the Potency of ANP in Isolated Rat Pulmonary Resistance Vessels and Isolated Blood Perfused Lungs.