The nurse receives an order for atropine 1 mg IV x1 for a client. The nurse would administer the drug for which indication:

Rationale: A. Symptomatic bradycardia: Atropine is an anticholinergic medication that blocks the effects of the parasympathetic nervous system on the heart, specifically inhibiting vagal stimulation. This increases heart rate by allowing the sinoatrial node to depolarize more rapidly, making it the drug of choice for clinically significant bradycardia causing dizziness, hypotension, or syncope. B. Hypertension: Atropine does not lower blood pressure and has minimal effect on vascular tone. It is not indicated for the treatment of hypertension and could potentially worsen cardiac workload by increasing heart rate. C. Urinary retention: While atropine can decrease bladder contractility due to its antimuscarinic effects, it is not used therapeutically to treat urinary retention. In fact, it may exacerbate urinary retention rather than relieve it. D. Constipation: Atropine slows gastrointestinal motility through muscarinic blockade and is sometimes a component of medications to reduce GI secretions or treat diarrhea. It is not used to treat constipation and may worsen bowel movement frequency.