A nurse is caring for a client who is receiving ceftriaxone intravenously. Which of the following manifestations should the nurse identify as an allergic reaction?

A Anaphylaxis is a severe allergic reaction that can occur rapidly after administration of ceftriaxone or other antibiotics. It may involve symptoms such as hypotension, difficulty breathing, swelling of the face or throat, and hives. Hypotension in this context is a serious sign of an allergic reaction and requires immediate intervention.B. Polyuria can be caused by other factors such as diuretic medications, diabetes mellitus, or other metabolic conditions. It is not a common manifestation of an allergic reaction to ceftriaxone.C. Nausea is a common side effect of many antibiotics, including ceftriaxone, due to gastrointestinal irritation. It does not typically indicate an allergic reaction unless it is accompanied by other symptoms such as rash, itching, or respiratory distress.D. Bradycardia can occur due to other reasons such as medication side effects (e.g., beta-blockers), vagal stimulation, or underlying cardiac conditions. It is not a characteristic sign of an allergic reaction to ceftriaxone.