Effect of age on bronchodilator response in acute severe asthma treatment.
OBJECTIVE
This study was designed to evaluate the effects of age on bronchodilator response to salbutamol in patients with acute severe asthma in the emergency department.


METHODS
Sixty-four sequential patients (mean age, 34.2+/-10.7 years) with acute asthma were enrolled in the trial. Using age as a major criterion, we divided the sample in two groups: the young one (age < or = 35 years, n=30) and the older (> 35 years, n=34). All patients were treated with salbutamol delivered with metered-dose inhaler into a spacer device, in a dose of four puffs every 10 min (100 microg per actuation) during 3 h.


RESULTS
Mean FEV1 improved significantly over baseline values for both groups (p=0.001). At final disposition, the mean percent of predicted FEV1 was 55.1+/-16.3% in the young group and 58.0+/-20.9% in the older group. There were no significant differences between both groups for FEV1 percent response at any point studied. A significant increase in heart rate over baseline was seen in the older group (p=0.001). Older patients also presented a higher incidence in nausea and tremor. Young and older patients with acute asthma achieved equivalent bronchodilation response to salbutamol.


CONCLUSIONS
We concluded that age is not a predictor of response to beta-agonists.
Rodrigo
G
G
Departamento de Emergencia, Hospital Central de las FF AA, Montevideo, Uruguay.
Rodrigo
C
C
D000208:Acute Disease; D000280:Administration, Inhalation; D000318:Adrenergic beta-Agonists / Q000008:administration & dosage / Q000627:therapeutic use*; D000328:Adult; D000367:Age Factors; D000420:Albuterol / Q000008:administration & dosage / Q000627:therapeutic use*; D001249:Asthma / Q000188:drug therapy*; D001993:Bronchodilator Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D016022:Case-Control Studies; D004630:Emergencies; D005260:Female; D005541:Forced Expiratory Volume / Q000187:drug effects; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D013997:Time Factors
D000318:Adrenergic beta-Agonists; D001993:Bronchodilator Agents; D000420:Albuterol