Changes in the normal maximal expiratory flow-volume curve with growth and aging.
Objective: this study analyzed the spirometric values in children and adolescents with hearing loss compared with the spirometric variables of a control group, and quantify the respiratory changes made on 13 volunteers’ deficient group. Methods: It employed the Student t test for independent samples and was considered the level α of 5%. The volunteers were diagnosed with hearing loss from moderate to profound. Participants with disabilities were evaluated by means of a form containing data regarding the clinical history to verify that they met the inclusion criteria of the study. The spirometry was performed with the use of a nose clip, demonstrations and encouraging voice in running the test. The values measured were vital capacity (VC), forced vital capacity (FVC), forced expiratory volume in one second (FEV1), Tiffenau index (FEV1/FVC), FEFmáx (FEF max), mean forced expiratory flow ( FEF 25% 75%) and maximum voluntary ventilation (MVV). Results: statistically significant reduction of FEFmáx (p ≤ 0.05) of the hearing impaired group compared with the control group. For most spirometric parameters evaluated did not differ between groups. Conclusion: There is a relationship between hearing loss and spirometric parameters in children and adolescents, as 30.8% of the results obtained from these participants were biased standards obstructive, restrictive and moderate obstructive moderate.