Efficacy of three different budesonide treatments in Chinese preschool children with recurrent wheezing.

To explore and compare the clinical control of three atomized inhalation budesonide (BUD) regimens for Chinese preschool children with recurrent wheezing using Test for Respiratory and Asthma Control (TRACK) scores. A total of 474 preschool children with positive Modified Asthma Predictive Index (mAPI) were randomly assigned to a daily group (initially given inhaled BUD 1 mg once a day and assessed every 4 weeks; if symptom were well controlled for 12 weeks, the dose was reduced to 25-50% of the previous dose until afinal dose of 0.25 mg once a day, maintained until 52 weeks), an intermittent high-dose group (1 mg twice daily for 7 days starting early during a predefined respiratory tract illness) and an intermittent medium-dose group (0.5 mg twice daily as soon as they contacted allergens or experienced nasal congestion, a runny nose, cough or other suspicious respiratory symptoms and continuing until symptoms were reduced or risk factors were absent for 3 days) for 52 weeks of treatment. The TRACK questionnaire was administered every 4 weeks. When TRACK scores were ≥ 80, symptoms were considered to be controlled. The average TRACK scores of the three groups after treatment were significantly higher than those before treatment (P < 0.001). There were no significant differences in the average TRACK scores and control rate after treatment at every 4 weeks in the three groups (P > 0.05). Te number of systemic glucocorticoid courses, urgent care visits for wheezing, and wheezing episodes before and after treatment were significantly different within each of the three groups (P < 0.001), but not among the three groups (P > 0.05). In clinical treatment of children, one of the three treatment options can be selected according to the specific situation case of mAPI- positive recurrent wheezing children.