Asthma

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Asthma	Asthmatic bronchiole and normal bronchiole	Common asthma triggers	Exercise-induced asthma
Lungs	Metered dose inhaler use - series	Nebulizer use - series	Normal versus asthmatic bronchiole
Peak flow meter	Peak flow meter use - series	Respiratory system	Spacer use - series
Spirometry

Bronchial asthma; Exercise-induced asthma

Treatment is aimed at avoiding known allergens and respiratory irritants and controlling symptoms and airway inflammation through medication.

There are two basic kinds of medication for the treatment of asthma:

Long-term control medications are used on a regular basis to prevent attacks, not for treatment during an attack. Types include:

• Inhaled steroids (such as Azmacort, Vanceril, AeroBid, Flovent) prevent inflammation
• Leukotriene inhibitors (such as Singulair and Accolate)
• Anti-IgE therapy (Xolair), a medicine given by injection to patients with more severe asthma
• Long-acting bronchodilators (such as Serevent) help open airways
• Cromolyn sodium (Intal) or nedocromil sodium
• Aminophylline or theophylline (not used as frequently as in the past)

Sometimes a combination of steroids and bronchodilators are used, using either separate inhalers or a single inhaler (such as Advair Diskus).

Quick relief, or rescue, medications are used to relieve symptoms during an attack. These include:

• Short-acting bronchodilators (inhalers), such as Proventil, Ventolin, Xopenex, and others.
• Corticosteroids, such as prednisone or methylprednisolone) given by mouth or into a vein

Persons with mild asthma (infrequent attacks) may use quick relief medication as needed. Those with persistent asthma should take control medications on a regular basis to prevent symptoms. A severe asthma attack requires a medical evaluation and may require a hospital stay, oxygen, and intravenous medications.

A peak flow meter, a simple device to measure lung volume, can be used at home to help you "see an attack coming" and take the appropriate action, sometimes even before any symptoms appear. If you are not monitoring asthma on a regular basis, an attack can take you by surprise.

Peak flow measurements can help show when medication is needed, or other action needs to be taken. Peak flow values of 50-80% of an individual’s personal best results indicate a moderate asthma attack, while values below 50% indicate a severe attack.