Placebo controlled trial of systemic corticosteroids in acute childhood asthma. Corticosteroids in status asthmaticus. Short course of steroids in home treatment of children with acute asthma. Early administration of corticosteroids in emergency room treatment of acute asthma. Effectiveness and safety of inhaled corticosteroids in controlling acute asthma attacks in children who were treated in the emergency department: a controlled comparative study with oral prednisolone. Comparison of fluticasone propionate and sodium cromoglycate for the treatment of childhood asthma (an open parallel group study).
In a randomised controlled trial 38 asthmatic children aged 2-11 yr who had not received regular oral or inhaled steroids during the previous year, were treated with a standard regime of nebulised salbutamol and intravenous aminophylline plus either hydrocortisone and oral prednisolone for 5 days, or placebo. The children were observed throughout their hospital stay and for 3 months afterwards. There was a greater fall in heart rates in the steroid treated group on the second day of treatment (mean diff. 16 beats/min) and at discharge (mean diff. 13 beats/min); p less than 0.025. Peak Expiratory Flow Rates recorded in 26 children, 13 in each group, showed more improvement on day 2 in those given steroids (mean diff 16% predicted); p less than 0.05. This difference was not apparent at discharge but 9 children treated with steroids were clinically wheeze-free when they left hospital compared with 3 in the placebo group, p less than 0.05. There were no differences in respiratory rate, pulsus paradoxus and arterial oxygen saturation. Trends in duration of hospital stay and relapse rate during the succeeding 3 months favoured active treatment. These findings support the use of systemic corticosteroids in addition to high dose bronchodilators to treat 'non steroid dependent' children hospitalised with acute severe asthma. Nineteen children who were not steroid dependent and were hospitalized in status asthmaticus were studied to evaluate the effect of corticosteroids. They were randomized into two groups. Each group received salbutamol inhalations and intravenous aminophylline therapy. One group received 7 mg/kg hydrocortisone intravenously every six hours; the other group served as a control. Each group showed significant improvement in clinical score and peak expiratory flow rate after 36 hours; there was no statistical difference in the degree of improvement. Six of ten steroid-treated children and six of nine controls achieved a PEFR of 50% predicted by 36 hours. The response to inhaled salbutamol was similar in each group. The results show that in the first 36 hours of therapy, corticosteroids have no additive effect on the bronchodilator response of aminophylline and salbutamol and do not hasten the recovery of nonsteroid-dependent children in status asthmaticus. Although the results show that an inhaled sympathomimetic drug is beneficial in status asthmaticus, corticosteroid therapy does not increase the responsiveness of the airways to these agents. A double blind, randomised, placebo controlled study of the treatment of children with acute asthma at home showed that a three day course of prednisolone hastened improvement of both asthmatic symptoms and peak expiratory flow rates. Thus all asthmatic children who present with an acute attack should be considered for treatment with corticosteroids in addition to bronchodilators not only to prevent possible deterioration but also to speed recovery. To determine the effect of early administration of high-dose intravenous corticosteroids on duration of emergency room treatment and hospital admission rate in patients with acute asthma.
                Randomized, double-blind, placebo-controlled trial.
                The emergency room of a large, urban hospital with primary and referral care responsibilities.
                Eighty-one patients from 18 to 45 years of age with acute bronchial asthma and without pneumonitis or other serious underlying illnesses were studied on 91 occasions and were randomly assigned to control or experimental groups.
                The steroid group received 125 mg of intravenous methylprednisolone whereas the control group received intravenous normal saline 30 minutes after initial treatment. Additional treatment included aerosolized metaproterenol and oral theophylline therapy. Six hours after study entry, remaining patients were treated with 40 mg of intravenous methylprednisolone. Hospitalization was mandatory if total treatment time was greater than 12 hours.
                Age, sex, peak expiratory flow at entry, and prevalence of recent corticosteroids use were similar in both groups. Duration of emergency room treatment was 6.7 +/- 4.2 (SD) hours in the steroid group and 6.3 +/- 4.1 hours in the control group (P = 0.66). Hospitalization was necessary in 18% (95% CI, 7% to 30%) of the steroid group and in 13% (CI, 3% to 22%) of the control group. Frequency of return visits for acute asthma 2 days after emergency room discharge was 11% (CI, -1% to 22%) in the steroid group and 13% (CI, 2% to 23%) in the control group.
                These results fail to show any benefit for early administration of corticosteroids in patients with acute asthma. Routine administration of corticosteroids on initial presentation in such patients may not be warranted. Inhaled corticosteroids have a greater antiinflammatory potency and fewer systemic effects than intravenous, intramuscular, or oral corticosteroids. However, their role in acute asthma has not been established. We prospectively investigated the efficacy and safety of inhaled corticosteroids in controlling moderately severe acute asthma attacks in children who were treated in the emergency department.
                Children who were treated in the emergency department with moderately severe asthma attacks after receiving treatment with inhaled terbutaline were allocated by double-blind design to receive 1 dose of either 1600 micro(g) budesonide turbohaler or 2 mg/kg prednisolone. The pulmonary index score and peak expiratory flow rate were measured hourly for the first 4 hours. After discharge the children were treated with the same initial doses given 4 times daily, followed by a 25% reduction in dose every second day for 1 week. Parents recorded asthma symptoms and use of beta-2 agonists on a daily diary card. Serum cortisol concentration was measured at the end of weeks 1 and 3.
                Twenty-two children (11 in each group) with similar baseline parameters completed the study. There was a similar improvement in pulmonary index score and peak expiratory flow rate in the 2 groups. Children treated with budesonide showed an earlier clinical response than those given prednisolone, who also showed a decrease in serum cortisol concentration.
                In children with moderately severe asthma attacks who were treated in the emergency department, a short-term dose schedule of inhaled budesonide turbohaler, starting with a high dose and followed by a decrease over 1 week, is at least as effective as oral prednisolone, without suppressing serum cortisol concentration. Inhaled corticosteroids are highly effective in the treatment of asthma at all ages and their use in younger children is increasing. As concerns exist about the long-term systemic side-effects of high dose inhaled corticosteroids, current guidelines continue to recommend sodium cromoglycate (SCG) as first line regular medication for children with frequent symptoms. Few published studies have compared the safety and efficacy of inhaled corticosteroids with SCG in children. This study compares SCG with the new inhaled corticosteroid, fluticasone propionate (FP), which has theoretical advantages over other currently available corticosteroids due to its negligible oral bioavailability. This was a randomized, open, multi-centre, parallel group comparison of 50 micrograms FP twice daily and 20 mg SCG four times daily over 8 weeks, preceded by a 2-week baseline period. Sixty-two general practices and two hospital centres enrolled 225 asthmatic children aged 4-12 years (110 received FP; 115 received SCG). Outcome measures improved in both groups, with a significant difference in favour of FP for the key variables of mean morning and evening % predicted PEFR and % of symptom-free days and nights. No significant difference was observed for FEV1, or relief medication use. Two children taking FP and 10 children taking SCG withdrew because of adverse events. This study showed that low dose FP was effective and superior to SCG in young children with mild-moderate asthma. Safety studies of longer duration are needed before changing the current recommendations for inhaled corticosteroid therapy.
Systemic corticosteroids produce some improvements for children admitted to hospital with acute asthma. The benefits may include earlier discharge and fewer relapses. Inhaled or nebulised corticosteroids cannot be recommended as equivalent to systemic steroids at this time. Further studies examining differing doses and routes of administration for corticosteroids will clarify the optimal therapy.