Aminophylline reduces the depth and duration of sedation with barbiturates

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Abstract
Aminophylline, an inhibitor of cyclic nucleotide phosphodiesterase, has for many years been used to relieve bronchospasm. Recent reports have shown that aminophylline antagonizes morphine and diazepam sedation. To see if aminophylline acts similarly on barbiturate sedation, we examined 24 women undergoing short general anaesthesia with thiopental (7 mg · kg‐1), using a double‐blind study design. Evaluated by continuous auditory reaction time measurements, aminophylline (5.6 mg · kg‐1) reduces the depth and duration of sedation with thiopental. This suggests that aminophylline could be used to diminish an unwanted effect of barbiturate sedation.

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