Abstract
Adenotonsillar hypertrophy is a common disorder among children which, without proper treatment, may lead to considerable problems. Although the consequences of this disorder have been studied in other articles, we decided to evaluate the changes in pulmonary function tests in these children after adenotonsillectomy, and the correlation between clinical and spirometric parameters. We conducted a before- and after- clinical trial. Forty children (17 females and 23 males) with a diagnosis of upper airway obstruction due to adenotonsillar hypertrophy were enrolled in this study. Mean age of the participants was 6.9±1.9 years. Eight spirometric parameters were selected for evaluation pre-operatively and 40 days postoperatively. Besides, symptom scores were defined for each patient to assess their disease severity, pre- and postoperatively. Data were analyzed statistically. Forced vital capacity (FVC) increased from 1.28±0.26% pre-operatively to 1.33±0.24%postoperatively (P=0.05). Peak expiratory flow increased from 2.74±0.65% pre-operatively to 2.84±0.51% postoperatively (P=0.02) and mid expiratory forced expiratory flow (FEF25-75) was 1.81±0.48% pre-operatively, increasing to 1.91±0.50% postoperatively (P=0.02). Maximal expiratory flow at 25% of FVC (MEF25) increased from 1.09±0.36% pre-operatively to 1.21±0.34% postoperatively (P=0.02). There was no correlation among the other spirometric parameters (FEV1, FEV1/FVC, MEF50 and MEF75) pre- and post-operatively (P>0.05). Despite some improvements in pulmonary function indices, there was no correlation between changes in spirometric parameters and severity of the snoring (P>0.05). Although our findings reveal that adenotonsillectomy had a positive effect on pulmonary function tests, we found no significant correlation between alterations in spirometric parameters and severity of snoring. However, performing a spirometric examination in children with adenotonsillar hypertrophy may be beneficial for assessing the pulmonary status of the affected patient.
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