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The effects of atropine and glycopyrronium, when given intravenously with neostigmine during the reversal of neuromuscular blockade in patients with cardiovascular disease, were compared in a double blind trial. Atropine was associated with a significantly greater elevation of heart rate and rate-pressure product than glycopyrronium. This elevation was also more sustained with atropine. The entire atropine population also showed a significantly greater incidence of ST-segment depression on the electrocardiogram than that observed in those who had received glycopyrronium. Furthermore, patients with ischaemic heart disease and previous myocardial infarction who received atropine showed a significantly greater incidence of dysrhythmias than those given glycopyrronium. It is suggested that at the time of reversal of neuromuscular blockade in patients with cardiovascular disease, glycopyrronium is a more suitable agent than atropine.
Mostafa et al. (1984) studied this question.