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Atropine Sulfate
Trade Name
- Atropine
- Atropair
- Sal-Tropine
- Ophthalmic: Atropisol, Isopto Atropine
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Atropine Sulfate
Class
Anticholinergic agent
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Atropine Sulfate
Mechanism of Action
- Parasympatholytic: inhibits action of acetylcholine at postganglionic parasympathetic neuroeffector sites
- Increases heart rate in life-threatening bradydysrhythmias
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Atropine Sulfate
Indications
- Hemodynamically significant bradycardia
- Organophosphate poisoning
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Atropine Sulfate
Contraindications
- Tachycardia
- Hypersensitivity
- Unstable cardiovascular status in acute hemorrhage and myocardial ischemia
- Narrow-angle glaucoma
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Atropine Sulfate
Adverse Reactions
- Headache
- Dizziness
- Palpitations
- Nausea/Vomiting
- Tachycardia
- Dysrhythmias
- Anticholinergic effects (blurred vision, dry mouth, urinary retention)
- Paradoxical bradycardia when pushed slowly or at low doses
- Flushed (hot dry skin)
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Atropine Sulfate
Drug Interactions
- Potential adverse effects when administered with digoxin, cholinergics, physostigmine
- Effects enhanced by antihistamines, procainamide, quinidine, antipsychotics, benzodiazepines and antidepressants
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Atropine Sulfate
How Supplied
- Prefilled syringes: 1.0 mg in 10 ml of solution.
- Injection Solution as Sulfate: 0.5mg/ml (1ml); 1mg/ml (1ml); 0.1mg/ml (5ml,10ml); 0.4mg/ml (1ml, 20ml)
- Autoinjectors: supplied with other medications, for use as a Nerve Agent Antidote
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Atropine Sulfate
Dosage and Administration
Adult
- Bradydysrhythymias: 0.5 mg IV/IO every 3-5 minutes as needed to maximum total dose of 3mg (pacing is first-line therapy)
- Organophosphate Poisoning Management: 2.0-5.0 mg IV/IO
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Atropine Sulfate
Dosage and Administration
Pediatric
Bradydysrhythmias: 0.02 mg/kg IV/IO (minimum single dose 0.1mg, maximum single dose 1.0mg) (epinephrine is first-line therapy)
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Atropine Sulfate
Duration of Action
- Onset: Immediate
- Peak Effect: Rapid to 1-2 minutes
- Duration: 2-6 hours
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Atropine Sulfate
Special Considerations
- Pregnancy Safety: Category C
- Moderate doses dilate pupils
- Was routinely administered for Asystole/PEA prior to release of the 2010 AHA ECC Guidelines changes. (1mg q. 3-5 min. max 3mg)
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