Frequently nebulized β-agonists for asthma : effects on serum electrolytes

Study objective: To determine the magnitude of the changes in serum potassium, magnesium, and phosphate during the treatment of acute bronchospasm with repeated doses of β-adrenergic agonists. Design: Prospective study of a convenience sample of asthmatic patients. Setting: University teaching hospital emergency department. Type of participants: Twenty-three patients met the inclusion criteria of age of more than 16 years; a history of asthma or chronic obstructive pulmonary disease, and an acute exacerbation. Interventions: Baseline peak expiratory flow rate and serum potassium, magnesium, and phosphate levels were measured

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