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The safety of long-acting beta-agonists among patients with asthma using inhaled corticosteroids: systematic review and metaanalysis Jaeschke R; O'Byrne PM; Mejza F; Nair P; Lesniak W; Brozek J; Thabane L; Cheng J; Schunemann HJ; Sears MR; Guyatt GAm J Respir Crit Care Med 2008[Nov]; 178 (10): 1009-16RATIONALE: Inhaled long-acting beta-agonists (LABAs), when used as monotherapy in asthma, may increase asthma-related hospitalizations, life threatening events requiring intubation/mechanical ventilation, and asthma-related deaths, but concomitant use of inhaled corticosteroids (ICS) may modify this effect. OBJECTIVES: To determine the safety of long-acting beta-agonists among patients with asthma using corticosteroids. METHODS: We conducted a systematic review and metaanalysis of parallel-group, blinded, randomized, controlled trials with at least 12 weeks of treatment addressing the impact of LABA on asthma-related and total morbidity and mortality in patients concomitantly using ICS. We searched MEDLINE, EMBASE, ACPJC, and Cochrane (Central) databases, and contacted authors and sponsors. MEASUREMENTS AND MAIN RESULTS: We used a random effects model to pool results from different studies as odds ratios (ORs) (95% confidence interval [CI]) (OR < 1.0 favors LABA). The search yielded 62 relevant studies included in this analysis. Among over 29,000 participants (15,710 taking LABA, with over 8,000 patient-years observed in the LABA groups), there were three asthma-related deaths and two asthma-related, nonfatal intubations (all in LABA groups; |Administration, Inhalation[MESH]|Adrenal Cortex Hormones/*administration & dosage[MESH]|Adrenergic beta-Antagonists/*adverse effects[MESH]|Asthma/*drug therapy[MESH]|Drug Interactions[MESH]|Drug Therapy, Combination[MESH]|Humans[MESH]|Randomized Controlled Trials as Topic[MESH] |
