Immunology

Analgesics in pregnancy do not seem to cause offspring asthma

(HealthDay)—Analgesics taken during pregnancy, including opioids, antimigraine drugs, and paracetamol, do not appear to cause asthma, according to a study published online March 17 in the European Respiratory Journal.

Immunology

Eating fish may help prevent asthma

A James Cook University scientist says an innovative study has revealed new evidence that eating fish can help prevent asthma.

Obstetrics & gynaecology

Prenatal high-dose vitamin D not linked to asthma at age 6

(HealthDay)—High-dose vitamin D supplementation in pregnancy is not associated with a child's risk for asthma at age 6 years, according to a research letter published in the March 12 issue of the Journal of the American ...

Immunology

Homes with high ventilation rates tied to respiratory issues

(HealthDay)—People living in homes with high average air exchange rates (AAERs) are more likely to report chronic cough, asthma, or asthma-like symptoms, according to a study published in the February issue of Environmental ...

Immunology

New findings may help guide treatment of patients with asthma

Asthma patients often undergo tests involving inhaled methacholine, a drug that can cause narrowing of the airways, similar to what occurs in asthma. In a Respirology analysis of data on patients undergoing such tests, obesity ...

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Asthma

Asthma is a chronic inflammation of the lungs in which the airways (bronchi) are reversibly narrowed. Asthma affects 7% of the population, and 300 million worldwide. During attacks (exacerbations), the smooth muscle cells in the bronchi constrict, and the airways become inflamed and swollen. Breathing becomes difficult, and asthma causes 4,000 deaths a year in the U.S. Attacks can be prevented by avoiding triggering factors and by drug treatment. Drugs are used for acute attacks, commonly inhaled β2-agonists. In more serious cases, drugs are used for long-term prevention, starting with inhaled corticosteroids, and then long-acting β2-agonists if necessary. Leukotriene antagonists are less effective than corticosteroids but have no side effects. Monoclonal antibodies such as mepolizumab and omalizumab are sometimes effective. Prognosis is good with treatment.

In contrast to chronic obstructive pulmonary disease and chronic bronchitis, the inflammation of asthma is reversible. In contrast to emphysema, asthma affects the bronchi, not the alveoli.

The National Heart, Lung and Blood Institute defines asthma as a common chronic disorder of the airways characterized by variable and recurring symptoms, airflow obstruction, bronchial hyperresponsiveness (bronchospasm), and an underlying inflammation.

Public attention in the developed world has recently focused on asthma because of its rapidly increasing prevalence, affecting up to one in four urban children.

This text uses material from Wikipedia, licensed under CC BY-SA