Corticosteroids in acute severe asthma: effectiveness of low doses. Early administration of corticosteroids in emergency room treatment of acute asthma. High-dose and low-dose systemic corticosteroids are equally efficient in acute severe asthma. Efficacy of short-term corticosteroid therapy in outpatient treatment of acute bronchial asthma. Early administration of hydrocortisone in the emergency room treatment of acute asthma: a controlled clinical trial. Controlled trial of intravenous corticosteroids in severe acute asthma. Methylprednisolone therapy for acute asthma in infants and toddlers: a controlled clinical trial. A double-blind study of troleandomycin and methylprednisolone in asthmatic subjects who require daily corticosteroids.
Although the need for corticosteroids in acute severe asthma is well established the appropriate dose is not known.
                The response to intravenous hydrocortisone 50 mg (low dose), 100 mg (medium dose), and 500 mg (high dose), administered every six hours for 48 hours and followed by oral prednisone, was compared in patients with acute asthma in a double blind randomised study. After initial emergency treatment with bronchodilators subjects received oral theophylline or intravenous aminophylline and nebulised salbutamol four hourly. Patients were given low, medium, or high doses of intravenous hydrocortisone and then 20, 40, or 60 mg/day respectively of oral prednisone with a reducing regimen over the following 12 days. Beclomethasone dipropionate, 400 micrograms twice daily by metered dose inhaler, was also started. Peak expiratory flow (PEF), forced expiratory volume in one second (FEV1), and visual analogue dyspnoea scores (VAS) were recorded daily in hospital and PEF and VAS twice daily after discharge for a total of 12 days.
                The 66 subjects (40 female) who completed the study had a mean (SD) age of 31(14) years. On presentation mean (SD) FEV1% predicted in the low (n = 22), medium (n = 20), and high dose (n = 24) groups was 17(13), 19(12), and 19(11) and after emergency bronchodilator treatment 32(20), 30(12), and 36(13). After 24 hours of treatment the respective post-bronchodilator FEV1% predicted values were 62(22), 62(23), and 65(28) compared with 71(24), 69(22), and 71(24) after 48 hours. No significant difference between the groups was detected. PEF and VAS improved with treatment over the 12 days but was not influenced by steroid dose.
                Hydrocortisone 50 mg intravenously four times a day for two days followed by low dose oral prednisone is as effective in resolving acute severe asthma as 200 or 500 mg of hydrocortisone followed by higher doses of prednisone. 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. The optimal amount of systemic corticosteroids to be used in acute severe asthma remains an unresolved issue. In this double-blind, randomized study we compared two doses of methylprednisolone (1 vs 6 mg.kg-1 q.d.) in asthmatics presenting with an acute severe asthma attack, unresponsive to an intensive beta 2-agonist regimen administered during a run-in period. Concurrent therapy, including oxygen, inhaled and intravenous salbutamol, and aminophylline was strictly standardized. The response was assessed by serial bedside spirometry. The primary outcome measurement was forced expiratory volume in one second (FEV1) (expressed as percentage of predicted values) at 24 and 44 h. The trial was designed in order to achieve a statistical power of 90%. Twenty three patients were included in the low-dose group and 24 in the high-dose group. Both groups were comparable in terms of demographic profiles, history of asthma, and severity of the current attack. Improvement in pulmonary function was similar in both groups. At 44 h, the mean (+/- SD) FEV1 values were 53 +/- 22 and 45 +/- 14% in the low and in the high-dose group respectively (NS). We conclude that high dose systemic corticosteroids offer no further benefit over low-doses in the treatment of severe acute asthma. A group of adults with 76 episodes of acute asthma needing emergency therapy, but not requiring hospitalization, were discharged from an emergency department following standardized therapy with bronchodilators. Upon discharge, the patients were treated with a controlled regimen of oral theophylline, and were randomly assigned in double-blind manner to either a placebo treatment (42 patient episodes) or a corticosteroid treatment group (34 patient episodes). The latter were given an intravenous bolus of methylprednisolone followed by an eight-day tapering course of oral methylprednisolone, starting at 32 mg twice a day. Follow-up was carried out seven or 10 days after treatment in the emergency department. Relapse could not be predicted on the basis of peak expiratory flow rates measured during care in the emergency department. Those patients who received corticosteroids had a decrease in the need for repeated emergency care (5.9 percent versus 21 percent for placebo) and fewer respiratory symptoms (15.6 percent versus 36.4 percent for placebo). It is concluded that a short course of high-dose corticosteroids in outpatients reduces the relapse rate and symptoms following an acute asthmatic attack. To determine whether early administration of a single dose of intravenous hydrocortisone (500 mg) modified the need for hospitalization and duration of treatment, and improve pulmonary function assessed by subjective and objective criteria of acute asthma patients.
                Randomized, double-blind, placebo-controlled trial.
                The emergency room (ER) of a large, urban hospital with primary and referral care responsibilities.
                Ninety-eight patients from 18 to 50 years of age with acute bronchial asthma, with a PEFR and FEV1 in the first second below 50% of predicted value (FEV1 mean % of predicted = 27.8 +/- 10.0) and without history of chronic cough or other medical disease.
                The corticosteroid group received 500 mg of intravenous hydrocortisone whereas the control group received intravenous normal saline immediately after arrival to the ER. Additional treatment included salbutamol delivered with metered-dose inhaler into a spacer device (Volumatic), in four puffs actuated in rapid succession (100 micrograms per actuation), at 10-min intervals. The final mean dose was 5.7 mg for the steroid group and 5.6 mg for the control one (P = 0.86). Hospitalization was mandatory if total treatment time was greater than 6 h.
                Age, sex, PEFR, FEV1, FVC, symptom index, and corticosteroids use were similar in both groups. FEV1 expressed as mean % of predicted was 54.6 +/- 17.3% in the control group and 54.6 +/- 17.4% in the steroid group (P = 0.75). Duration of ER treatment was 2.22 +/- 1.75 h in the corticosteroid group and 2.24 +/- 1.70 h in the control group (P = 0.81). The hospital admission rate was 10.2% for the corticosteroid group and 8.16% for the control group. There were no differences between the groups when patients admitted or discharged were examined separately.
                Early administration of corticosteroids does not modify outcome of ER treatment of asthma, and does not improve pulmonary function in the first 6 h of treatment. In accord with this, administration of corticosteroids to these patients could be delayed by several hours without modifying clinical outcome. When an aggressive beta-agonist bronchodilator regimen is used, it obviates the need for steroids in this early stage of treatment. The value of corticosteroids in severe acute asthma continues to be debated.
                Ninety consecutive patients admitted to the emergency room with severe acute asthma were studied in a randomised, double blind, controlled trial to determine the efficacy of corticosteroids. Eighty two patients completed the study. All received oxygen therapy and intensive bronchodilator treatment. The patients were divided into three groups for steroid treatment, receiving intravenous methylprednisolone 10 mg/kg every four hours for 48 hours (29 patients, group A); intravenous methylprednisolone 2 mg/kg every 4 hours for 48 hours (27 patients, group B); or no intravenous corticosteroids (26 patients, group C).
                There were no differences on admission among the three groups in forced expiratory volume in one second (FEV1), forced vital capacity (FVC), peak expiratory flow (PEF), or arterial oxygen or carbon dioxide tension; and the rates of recovery in FEV1, FVC, and PEF were similar.
                Corticosteroids given with bronchodilators have not shown a beneficial effect in the first 48 hours of recovery of severe acute asthma. Only in those patients who failed to respond by the third hour of treatment, and in those who were previously taking oral corticosteroids, does a favourable, though not statistically significant, effect appear to occur. A controlled double-blind trial was carried out to assess the effect of the early introduction of combined corticosteroid and beta-adrenergic drugs for the treatment of acute asthma in infants and toddlers. Seventy-four emergency room patients (aged 7 to 54 months) who were treated for acute asthma were studied. Treatment included, in addition to salbutamol inhalations, a single dose of intramuscular methylprednisolone (4 mg/kg) or normal saline as placebo. The patients were reevaluated 3 hours after initiation of treatment. At that time, patients were either admitted or discharged based on a clinical decision. Only 8 (20%) of 39 patients treated with steroids were admitted, compared with 15 (43%) of 35 in the placebo group (P less than .05). Sequential analysis of 33 pairs, matched by age and severity of symptoms, revealed statistically significant reduced admission rates in patients treated with steroids. In the younger patients (6 to 24 months), admission rate was significantly lower for those treated with steroids (18%) as compared with those treated without steroids (50%) (P less than .05). In the older group (24 to 54 months), the trend was similar but not statistically significant: 23% vs 31% in the steroid and placebo groups, respectively. These data indicate that corticosteroid treatment combined with an adrenergic agent, given early during an acute asthmatic episode, significantly reduces the hospital admission rate of infants and toddlers. A group of 75 subjects with asthma requiring daily corticosteroids for control were enrolled in a 2-yr, double-blind, placebo-controlled study of the use of troleandomycin combined with methylprednisolone, compared with methylprednisolone alone, for the management of their asthma. The primary outcome variables were determination of the lowest stable methylprednisolone dose and assessment of corticosteroid side effects. Methylprednisolone dose was adjusted to maintain optimal control of asthma symptoms. A total of 30 patients receiving TAO and 27 patients receiving placebo completed 1 yr; 17 on TAO and 8 on placebo completed 2 yr of double-blind participation. Control of asthma was equivalent in both groups. The vast majority of patients in both groups achieved alternate-day dosing (29 of 30 on TAO and 23 of 27 on placebo in the first year). The lowest stable doses of methylprednisolone achieved were 10.4 mg/day (placebo) versus 6.3 mg/day (TAO) in the 1-yr group (p = 0.03). However, the baseline dose was also significantly higher in the placebo group (22.8 versus 17.6 mg/day in the TAO group). Therefore, the reductions in methylprednisolone dose were not significantly different between treatment groups. Differences were observed between the two treatment groups in serum IgG, fasting blood sugar, serum cholesterol, and progression of osteoporosis. In each instance the more unfavorable response occurred in those subjects receiving TAO. We conclude that the addition of TAO to methylprednisolone was not accompanied by a reduction in corticosteroid side effects compared with treatment with methylprednisolone alone. Furthermore, no evidence was found for a subset of "TAO responders."(ABSTRACT TRUNCATED AT 250 WORDS)
No differences were identified among the different doses of corticosteroids in acute asthma requiring hospital admission. Low dose corticosteroids (< or = 80 mg/day of methylprednisolone or < or = 400 mg/day of hydrocortisone) appear to be adequate in the initial management of these adult patients. Higher doses do not appear to offer a therapeutic advantage.