Allergy and Airway |

Relationship Between Skin Prick Test, Peripheral Eosinophilic Count, Serum Total and Specific IgE, and Severity of Asthma in Atopic Asthma FREE TO VIEW

Hamdy Mahmoud, MD; Mohammad Elqady, MD
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Sohag University-Sohag Faculty of Medicine, Sohag-Elmaragha-Nagecc Elhakim, Egypt

Chest. 2013;144(4_MeetingAbstracts):78A. doi:10.1378/chest.1704221
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SESSION TITLE: Asthma Posters

SESSION TYPE: Original Investigation Poster

PRESENTED ON: Wednesday, October 30, 2013 at 01:30 PM - 02:30 PM

PURPOSE: Atopic sensitization is a well-known risk factor for asthma and bronchial hyperresponsivness. IgE-mediated responses contribute to allergy and asthma. Blood eosinophilis are known to be an indirect marker of airway inflammation in asthma. To evaluate the interrelationship between skin prick test, serum total & specific IgE levels, eosinophilia and asthma severity in atopic asthmatics

METHODS: One hundried ten atopic asthmatics patients were randomly selected and 30 matched control subjects were included. All were submitted to detailed clinical history and examination , pulmonary function testing ,skin prick testing to 17 common allergens , blood eosinophil counts and both total and specific IgE levels. Asthma severity was assessed according to GINA guidelines.

RESULTS: There was a highly significant relationship between total IgE, eosinophil counts & percent (p<0.0001) from one hand and severity of asthma from the other hand .There was a significant increase in severity of asthma with the increasing number of positive allergens in SPT & also when asthma was associated with other allergic diseases (p<0.04).Increased number of positive allergens was associated significant increase in the level of total IgE, eosinophil count & percent (p<0.0002).Total IgE was significantly higher in atopic asthmatics with eosinophilia than those without (p<0.0001). Eosinophil count & percent, total IgE and specific IgE were significantly higher in patients than controls (p<0.0001). The most common allergens for atopic asthma in our locality were D. pternoyssinus, followed by D.farinae then Cockroach extract.

CONCLUSIONS: Atopic asthmatic patients with a higher serum concentration of both total IgE and specific IgE ,blood eosinophilia and sensitivity to more than one allergens in SPT have a higher asthma severity.

CLINICAL IMPLICATIONS: Skin prick test & totall IgE & specific IgE play role in severity of atopic asthema thus support value of desensitization and antiigE in atopic ASthema TTT.

DISCLOSURE: The following authors have nothing to disclose: Hamdy Mahmoud, Mohammad Elqady

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