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Atropine is an anticholinergic medicine that blocks muscarinic acetylcholine receptors. It is used in emergency care for certain slow heart rhythms and poisoning caused by organophosphates or nerve agents. Atropine eye drops can dilate the pupil and relieve pain linked to eye inflammation. The form, dose, and monitoring depend on the condition being treated.
read more about atropine ...Atropine injection can be used to raise the heart rate in certain cases of symptomatic bradycardia. It is also an antidote for poisoning that causes excessive cholinergic activity, including some pesticide and nerve-agent exposures. Before or during some procedures, atropine can reduce saliva and airway secretions. Ophthalmic atropine is used to dilate the pupil, temporarily relax focusing, and manage pain from selected inflammatory eye conditions.
Atropine blocks the effects of acetylcholine at muscarinic receptors in the parasympathetic nervous system. This action can increase heart rate, reduce secretions, relax certain smooth muscles, and widen the pupil. Its effects differ by dose, route, and the organs being treated. Because these changes can be strong, systemic atropine is commonly given with clinical monitoring.
Atropine is available as an injection and as an ophthalmic solution, with some combination products containing smaller amounts. Emergency injections are usually administered by trained medical personnel through a vein, muscle, or other approved route. Eye drops are placed directly into the affected eye according to the prescription. Patients should follow the exact dose and schedule because using too much atropine can cause serious anticholinergic toxicity.
Common systemic effects include dry mouth, blurred vision, sensitivity to light, reduced sweating, constipation, urinary retention, and a faster heartbeat. Higher doses can cause agitation, confusion, hallucinations, overheating, abnormal heart rhythms, or coma. Eye drops can cause stinging, prolonged pupil dilation, and temporary difficulty focusing. Extra caution is needed in people with certain heart conditions, urinary obstruction, gastrointestinal blockage, or a risk of acute angle-closure glaucoma. Urgent care is needed after a suspected overdose or a severe reaction.
Atropine is not classified as a stimulant. It is an antimuscarinic medicine that blocks part of the parasympathetic nervous system, although this action can increase heart rate and cause nervous-system effects at high doses.
Atropine can increase heart rate by reducing parasympathetic signals to the heart. Clinicians use it for selected cases of symptomatic bradycardia, but it is not appropriate for every slow heart rhythm.
Pupil dilation and blurred near vision from atropine can last for several days and sometimes longer. The duration depends on the concentration, dose, age, and individual response.
Atropine is used as an antidote for poisoning from organophosphate and certain carbamate pesticides when cholinergic symptoms are present. Treatment is an emergency and usually requires repeated dosing, breathing support, and other medical care.
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