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Murine Model of Allergen Induced Asthma

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Published on: May 14, 2012

Comparison between two methods of asthma control evaluation based on individual perception.

Paula Cristina Andrade Almeida¹, Adelmir Souza-Machado, Mylene dos Santos Leite

¹Programa para o Controle da Asma e Rinite Alérgica, Salvador, BA, Brazil. paulafisio.respir@gmail.com

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|July 12, 2012

Summary

Patients with severe asthma often overestimate their symptom control. The Asthma Control Questionnaire 6-item version (ACQ-6) revealed poor asthma control in many, indicating a risk of undertreatment.

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Area of Science:

Pulmonology
Clinical Medicine
Asthma Research

Background:

Asthma control is crucial for patient outcomes.
Subjective patient perception may not align with objective measures.
Accurate assessment of asthma control is vital for appropriate treatment.

Purpose of the Study:

To compare patient-reported asthma control with Asthma Control Questionnaire 6-item version (ACQ-6) scores in severe asthma.
To investigate the association between asthma control and emergency room visits.

Main Methods:

Cross-sectional study of 423 severe asthma patients in Brazil.
Patients completed the ACQ-6 and a subjective control assessment.
Data collected between August 2008 and March 2010.

Main Results:

Only 8% of patients perceived their asthma as uncontrolled.
38.8% of patients had an ACQ-6 score indicating poor control.
Poor concordance between subjective perception and ACQ-6 scores was observed (kappa statistic).
Uncontrolled asthma was directly associated with increased emergency room visits (p < 0.001).

Conclusions:

Patient self-assessment of asthma control is unreliable and often overestimated.
The ACQ-6 is a more objective measure of asthma control.
Discrepancies in perceived control may lead to undertreatment of severe asthma.