Excessive bradycardia may be countered by atropine, 1-2mg intravenously, and if necessary this may be followed by a beta stimulant, such as isoprenaline 25 micrograms initially or orciprenaline 0.5mg given as a slow intravenous injection. Care must be taken to ensure that the blood pressure does not fall too low if the dose of the beta-receptor agonist has to be increased.
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