Anaphylaxis and Cardiac Arrest Induced by Initial Intravenous Ceftriaxone: A Case Report.

BACKGROUND Ceftriaxone is a cephalosporin antibiotic administered by injection, and although it is widely used, there have been rare reports of anaphylaxis and cardiac arrest, with some fatal outcomes. This report describes the case of a 61-year-old woman with anaphylaxis and cardiac arrest on initial intravenous administration of ceftriaxone who recovered following cardiopulmonary resuscitation. CASE REPORT A 61-year-old woman with a 3-day history of cough and dizziness presented to the emergency room. She had been taking cefuroxime and aminophylline, with no known antibiotic allergies. On examination, mild leukocytosis was observed, and chest computed tomography (CT) revealed right lower-lobe consolidation, consistent with pneumonia. Intravenous ceftriaxone was administered. Within 30 seconds, she developed severe respiratory distress and cyanosis. Ceftriaxone was immediately discontinued, and she rapidly progressed to asystole, and advanced cardiovascular life support (ACLS) was initiated. Spontaneous circulation was restored after 2 minutes. She stabilized with corticosteroids and supportive care and her respiratory status and oxygenation improved. One hour after onset, a transient truncal urticaria occurred and resolved spontaneously. She was then transferred to the intensive care unit (ICU) and discharged in good health after 3 days. No complications were noted at 1-month follow-up. CONCLUSIONS An initial intravenous dose of ceftriaxone may trigger rare but serious anaphylactic reactions, even in patients without a history of drug allergy, underscoring the need for vigilant monitoring during administration.