Asthma

Texas the front line on high school ECG debate

Cody Stephens was trying to shed some of the 290 pounds from his 6-foot-9 frame before graduating high school and attending his first college football training camp three summers ago when he took a nap and didn't wake up. ...

May 03, 2015
popularity 9 comments 0

Asthma (from the Greek άσθμα, ásthma, "panting") is the common chronic inflammatory disease of the airways characterized by variable and recurring symptoms, reversible airflow obstruction, and bronchospasm. Symptoms include wheezing, coughing, chest tightness, and shortness of breath. Asthma is clinically classified according to the frequency of symptoms, forced expiratory volume in 1 second (FEV1), and peak expiratory flow rate. Asthma may also be classified as atopic (extrinsic) or non-atopic (intrinsic).

It is thought to be caused by a combination of genetic and environmental factors. Treatment of acute symptoms is usually with an inhaled short-acting beta-2 agonist (such as salbutamol). Symptoms can be prevented by avoiding triggers, such as allergens and irritants, and by inhaling corticosteroids. Leukotriene antagonists are less effective than corticosteroids and thus less preferred.

Its diagnosis is usually made based on the pattern of symptoms and/or response to therapy over time. The prevalence of asthma has increased significantly since the 1970s. As of 2010, 300 million people were affected worldwide. In 2009 asthma caused 250,000 deaths globally. Despite this, with proper control of asthma with step down therapy, prognosis is generally good.

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

Latest Spotlight News

Scientists 'un-can' the HIV virus

If the human immunodeficiency virus (HIV) is a bit like a hermetically sealed tin can no one has yet been able to break open, the good news is that researchers at the CHUM Research Centre, affiliated with ...

Premature birth alters brain connections

Premature birth can alter the connectivity between key areas of the brain, according to a new study led by King's College London. The findings should help researchers to better understand why premature birth ...

Study finds inhibitor for COPD lung destruction

In a new study, a research team based at Brown and Yale implicates a specific mitochondrial protein and pathway in the development of chronic obstructive pulmonary disease (COPD) from exposure to cigarette ...