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Excessive bradycardia may be countered by atropine 1-2 mg IV, followed if necessary, by a bolus of glucagon 10 mg IV.
If required this may be repeated or followed by an IV infusion of glucagon 1-10 mg/hr depending on response.
If no response to glucagon or glucagon is unavailable, dobutamine 2.5-10 mcg/kg/min by an IV infusion may be given.
Any risk of hypotension occurring followed the use of β-adrenoceptor agonists will be reduced by the use of the more selective agents, eg dobutamine.
