The Effect of Administrative Cessation of the Use of Ipratropium Bromide in the Treatment of Acute Asthma Attacks in the Emergency Department

Background. The anticholinergic agent ipratropium bromide has demonstrated effectiveness in the treatment of severe asthma exacerbations. Methods. We conducted a retrospective quasi-experiment to investigate the clinical consequences on acute asthma patients of the administrative removal of ipratropium bromide from an emergency department (ED) of a large tertiary hospital. We compared the combined negative outcome (hospitalization, length of stay in the ED, hospital readmission within 48 hours or 7 days, intubation, and death) of acute asthma patients, treated in the 12 months preceding (n = 394; Period A) and the 12 months following (n = 334; Period B) the policy change. Multiple imputations based on sequentially improved regressions were performed for missing data on measures of severity. Results. Administration of steroid medications increased from 49.8% to 61.4%; p = .002 from Period A to Period B. There was no statistically significant difference in combined negative outcome between Periods A and B (...