A patient is receiving (metoprolol) Lopressor post MI, the nurse should monitor for which adverse effect?

A. Constipation and dry mouth: Metoprolol does not commonly affect gastrointestinal motility or salivary gland secretion, so these symptoms are not typical adverse effects. Such findings are more often linked to anticholinergic medications. B. Signs of heart failure such as edema and weight gain: Metoprolol can reduce cardiac contractility, which may worsen heart failure in susceptible patients. Fluid retention, swelling, and rapid weight gain signal declining cardiac output and require prompt evaluation. C. Signs of hyperactivity: Metoprolol slows conduction through the AV node and decreases sympathetic activity, which usually causes fatigue rather than stimulation. Hyperactivity does not align with its mechanism of action and would be unlikely to occur with therapeutic dosing. D. Increased energy and appetite: Beta-blockers often cause lethargy or exercise intolerance due to reduced heart rate and cardiac workload. Increased energy or appetite would be inconsistent with these physiologic effects. Assessing for such symptoms would not provide relevant information regarding medication safety.