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Breathlessness perception assessed by visual analogue scale and lung function in children with asthma: A real‐life study
Author(s) -
Tosca Maria A.,
Silvestri Michela,
Olcese Roberta,
Pistorio Angela,
Rossi Giovanni A.,
Ciprandi Giorgio
Publication year - 2012
Publication title -
pediatric allergy and immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.269
H-Index - 89
eISSN - 1399-3038
pISSN - 0905-6157
DOI - 10.1111/j.1399-3038.2012.01316.x
Subject(s) - medicine , visual analogue scale , spirometry , asthma , airway obstruction , pulmonary function testing , lung function , cohort , cross sectional study , physical therapy , pediatrics , airway , lung , anesthesia , pathology
To cite this article: Tosca MA, Silvestri M, Olcese R, Pistorio A, Rossi GA, Ciprandi G. Breathlessness perception assessed by visual analogue scale and lung function in children with asthma: A real‐life study. Pediatr Allergy Immunol 2012: 23 : 537–542. Abstract Background: In children with asthma, discrepancies between objective indicators of airway obstruction and symptom perception are often observed. Although visual analogue scale (VAS) has been proposed as a useful tool for assessing accurate symptom perception, previous studies conducted in children with asthma included only small cohorts. A study was therefore designed to investigate the usefulness of VAS in establishing a reliable relationship between breathlessness perception and lung function in a large cohort of children with clinical diagnosis of asthma. Methods: A total of 703 children [470 boys and 233 girls, median age 10.29 (8.33–12.58) yr] with asthma were included in this cross‐sectional, real‐life study. Perception of breathlessness was assessed by using VAS, and lung volumes and expiratory flows were measured by spirometry. Results: Most children had intermittent or mild persistent asthma (93.3%), and only 46 children had a significant bronchial obstruction defined by FEV 1 values <80% of predicted. Globally, VAS was significantly, even though weakly, related to lung function. Analyzing children with bronchial obstruction, a moderate relationship between both FEV 1 ( r = 0.47) and FEF 25–75 ( r = 0.42) and VAS was detected. A VAS value of 6 was found to be a reliable cutoff for discriminating children with bronchial obstruction (AUC 0.83 at ROC curve; OR 9.4). Conclusion: The present study demonstrates that VAS might be considered a useful tool to assess symptom perception, mainly in children with airflow limitation.