The bronchodilator potencies of inhaled atropine sulphate and atropine methonitrate have been compared either alone or in combination with fenoterol in a group of adult asthmatic patients. A cumulative dose response study showed that 2 mg of atropine sulphate produced near maximum bronchodilatation. A larger dose of 4 mg was used in comparing the potency of this drug with 2 mg of atropine metho...

BACKGROUND Intravenous magnesium has been shown to cause bronchodilation in acute severe asthma and in small trials in acute exacerbations of chronic obstructive pulmonary disease (AECOPD). There is also some evidence of benefit from nebulised magnesium in acute severe asthma. Our hypothesis was that adjuvant magnesium treatment administered via repeated nebulisation was effective in the manage...