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Clinicians need a clear definition of severe asthma for precise management

November 14, 2017

ARLINGTON HEIGHTS, IL (Nov. 14, 2017) - Those who treat patients suffering with severe asthma know how frustrating it can be to try to get the disease under control - despite the introduction in recent years of both biologics and bronchial thermoplasty. These treatments have proven effective, but require an understanding of all that is involved before being prescribed or recommended.

An article in the Annals of Allergy, Asthma and Immunology, the scientific journal of the American College of Allergy, Asthma and Immunology (ACAAI), guides medical professionals through the principles involved in using these new treatments.

"The first principle is correctly identifying severe asthma, which is confusing among medical professionals," says allergist Michael Blaiss, MD, ACAAI Executive Medical Director and lead author. "The authors looked at definitions in the literature and from our own clinical practices, and came up with a user-friendly definition for the practicing clinician. We define severe asthma as asthma that, despite patient adherence, requires high-dose long-acting B2-agonists and/or additional controller medication, or requires oral corticosteroids to prevent it from becoming uncontrolled or that remains uncontrolled despite this therapy."

The authors emphasize that patient adherence must be verified before a patient is diagnosed as having severe asthma.

The article, "Guiding principles for use of newer biologics and bronchial thermoplasty for patients with severe asthma" examines therapeutic options for severe asthma prior to chronic steroid use. The recommendations were based on clinical data of preferred and alternative treatments depending on biomarkers. The included Venn diagram shows the overlap of allergic (IgE) and eosinophilic asthma, clearly demonstrating patients can fall into both categories.

"We felt strongly that before regular use of oral corticosteroids, because of the numerous complications with their chronic use, that other medical interventions should be considered related to the patient's asthma phenotype," says allergist Bradley Chipps, MD, ACAAI President and article co-author. "In contrast to what is usually seen in the literature on severe asthma, we thought that asthma phenotyping should be carried out at diagnosis and not after the patient is severe. Our hope is to prevent potentially poor outcomes before asthma symptoms worsen."
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About ACAAI

The ACAAI is a professional medical organization of more than 6,000 allergists-immunologists and allied health professionals, headquartered in Arlington Heights, Ill. The College fosters a culture of collaboration and congeniality in which its members work together and with others toward the common goals of patient care, education, advocacy and research. ACAAI allergists are board-certified physicians trained to diagnose allergies and asthma, administer immunotherapy, and provide patients with the best treatment outcomes. For more information and to find relief, visit AllergyandAsthmaRelief.org. Join us on Facebook, Pinterest and Twitter.

American College of Allergy, Asthma, and Immunology

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