A nurse is assessing a client prior to administration of atenolol and finds that the client's apical heart rate is 61/min. Which of the following actions should the nurse take?

Choice A rationale Administering half the dose now and the other half in 30 minutes is an inappropriate action for a beta-blocker like atenolol when the heart rate is already low. This approach would still lead to a further reduction in heart rate, potentially causing symptomatic bradycardia or other adverse cardiovascular events, and is not a standard medication administration protocol. Choice B rationale Atenolol is a beta-blocker that reduces heart rate and blood pressure. A normal apical heart rate typically ranges from 60 to 100 beats/min. A heart rate of 61/min, although within the normal range, is on the lower end, especially for a client receiving a beta-blocker. Administering atenolol could further decrease the heart rate, leading to symptomatic bradycardia or other adverse effects. Therefore, withholding the medication and contacting the provider is the safest action to assess the client's tolerance and determine if a dose adjustment is necessary. Choice C rationale Administering the prescribed dose when the client's apical heart rate is 61/min is generally contraindicated for a beta-blocker like atenolol. Beta-blockers work by decreasing heart rate. Giving the medication could cause the heart rate to fall below acceptable limits (e.g., less than 60 beats/min), potentially leading to dizziness, syncope, or cardiac arrest, necessitating careful clinical judgment. Choice D rationale Atropine is an anticholinergic medication used to treat bradycardia (heart rate less than 60 beats/min) by blocking the action of acetylcholine on muscarinic receptors, thereby increasing heart rate. While atropine can be used to treat symptomatic bradycardia, preparing to administer it *before* giving atenolol, especially when the heart rate is 61/min and the client is not yet bradycardic, is premature and not indicated.