Atropine Administration Guidelines

Atropine with Neostigmine for Reversal of Neuromuscular Blockade

The American College of Cardiology recommends a standard dose of atropine when administered with neostigmine for reversal of neuromuscular blockade of 0.02 mg/kg, while for symptomatic bradycardia treatment, 0.5 mg IV (adult dose) is recommended, which can be repeated up to a maximum dose of 2 mg 1, 2
The recommended dose of atropine when administered with neostigmine (0.04-0.05 mg/kg) is 0.02 mg/kg of body weight to counteract the muscarinic effects of neostigmine and prevent bradycardia, hypersalivation, and bronchial secretion 2, 3
In obese patients, the dose should be calculated based on ideal body weight 4

As an antisialogogue, atropine is administered in doses of 0.01-0.02 mg/kg IV (minimum dose: 0.1 mg; maximum dose: 1 mg) before the administration of sedative/anesthetic and paralytic agents to reduce salivary secretions and prevent bradycardia associated with rapid sequence intubation 5

The recommended dose for bradycardia is 0.5 mg IV, which can be repeated every 5 minutes up to a total maximum dose of 2 mg in adults 1
In children, the dose is 0.02 mg/kg IV/IO, with a minimum dose of 0.1 mg and a maximum dose of 0.5 mg for children and 1.0 mg for adolescents 5
Atropine is particularly useful in the context of acute myocardial infarction with sinus bradycardia and signs of hypoperfusion 1
It is also indicated for second-degree AV block type I, especially when complicating an inferior infarct 1

Atropine doses <0.5 mg or administered via routes other than intravenous may result in a paradoxical effect (bradycardia and AV conduction depression) 1
Repeated administration of atropine can produce adverse effects on the central nervous system, including hallucinations and fever 1
Caution should be exercised as the resulting sinus tachycardia may increase ischemia 1
In cases of anticholinesterase poisoning, higher doses of atropine may be necessary: 0.05 mg/kg for children (up to an initial adult dose: 2-5 mg) 5