Association between clinical and functional evaluation of children and teenagers

OBJECTIVES: To describe the results of spirometry in children and adolescents with asthma, comparing these findings with the clinical classification. METHODS: Retrospective, observational and descriptive study with asthma patients classified through the treatment STEPS suggested by the international guideline Global Initiative for Asthma (GINA) submitted to spirometry, followed by the Pediatric Pneumology Service in a quaternary hospital in a single health system network. RESULTS: In 310 exams evaluated, the average age was 10 years old; 205/310 (66.1%) were male patients; 178/310 (57.4%) with mild obstructive ventilatory disorder, 10/310 (3.2%) with moderate obstructive ventilatory disorder ; 9/310 (2.9%) with severe obstructive ventilatory disorder and 113/310 (36.5%) exams were within the parameters of normality. The bronchodilator response was evaluated in 284/310 (91,6%) exams, obtaining a positive result in 32.7% (93/284). When analyzing the treatment STEP, 30.3% (94/310) of the patients were in STEP 1; 27.7% (86/310) in STEP 2; 32.6% (101/310) in STEP 3; 9.4% (29/310) in STEP 4. After analysis of the clinical-functional dates, the chi-square test showed a significant association between the following results: normal and mild obstructive ventilatory disorder spirometry and with patients in STEPS 1 and 2 (p <0.05) and spirometry with moderate and severe with patients in STEP 3 and 4 (p <0.05). CONCLUSION: The clinical classification of asthma through the treatment STEPS suggested by GINA was directly associated with the results obtained by spirometry in asthmatic children.