Chest, Vol 103, 1655-1661, Copyright © 1993 by American College of Chest Physicians

ARTICLES

A retrospective comparative study of in-hospital management of acute severe asthma: 1984 vs 1989

E Kuo and S Kesten
Asthma Centre, Toronto Hospital, Canada.

Recent controversies examining the management of acute asthma prompted us to investigate whether there had been any significant changes in our management practices. We therefore audited the charts of all patients admitted to a large tertiary-care university-affiliated hospital with a primary diagnosis of acute asthma during the years of 1984 and 1989. A total of 67 patients' charts were reviewed (39 in 1984 and 28 in 1989). The mean age and initial flow rates (FEV1 or peak expiratory flow rate [PEFR]) were similar. In the emergency room, chest radiographs and arterial blood gas analyses were done more frequently than objective measures of flow. Fifty-one percent (20/39) of the patients had no measurement of flow in the emergency room in 1984 and 39 percent (11/28) in 1989 (p > 0.05). In both years, approximately 20 percent of the patients had no record of flow rates during their hospitalization (21 percent [8/39] in 1984 and 18 percent [5/28] in 1989). More studies of the blood were ordered in 1989, including hepatic enzyme and electrolyte measurements for no clear reasons. The clinical utility of chest radiographs was negligible. While the vast majority of patients received systemic corticosteroids in both years (85 percent [33/39] in 1984 and 96 percent [27/28] in 1989), 23 percent (9/39) and 18 percent (5/28) were discharged without oral steroid therapy in 1984 and 1989, respectively (p > 0.05). There was a significant decline in the use of aminophylline (95 percent [37/39] to 54 percent [15/28]; p < 0.05) and an increase in the use of ipratropium bromide (15 percent [6/39] to 75 percent [21/28]; p < 0.05) in 1989. Theophylline levels were less likely to be measured in 1989, and the majority of levels in both years were either subtherapeutic or toxic. No patients were discharged with peak flow meters or recorded action plans, although follow-up arrangements were recorded in 87 percent (34/39) and 96 percent (27/28) of the patients in 1984 and 1989. We conclude that while improvements in in-hospital management of asthma were noted in 1989, suboptimal management practices are still common.