Which symptom displayed by a patient would be most indicative to the nurse to withhold a recently prescribed beta-adrenergic blocker?

A. Wheezing: Wheezing suggests bronchospasm or reactive airway disease; nonselective β-blockers (and even β1 selective drugs in high doses) can provoke bronchoconstriction, so wheezing is a contraindication and the drug should be withheld and the provider notified. B. Dizziness: Dizziness can occur from hypotension or bradycardia caused by beta blockers; it warrants assessment (check HR/BP) and possible dose adjustment, but it is not an absolute reason to automatically withhold unless vitals are unstable. C. Hyperglycemia: Beta blockers are more concerning for masking hypoglycemia signs and possibly delaying recovery from hypoglycemia, but hyperglycemia itself is not an indication to withhold a beta blocker. D. Peripheral edema: Peripheral edema may be a side effect (or from underlying heart failure) and should prompt evaluation, but it is not the single most indicative acute reason to withhold a new beta blocker compared with wheezing.