Long-acting Beta-Agonists with and without Inhaled Corticosteroids and Catastrophic Asthma Events

Background. For patients with severe asthma whose disease remains uncontrolled on inhaled corticosteroids inhaled bronchodilators may be required to control symptoms. Until the early 1990's only short acting beta 2-adrenergic agonists were available.1990's Long acting beta-agonists (LABA), salmete

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