<prompt> Which of the following beta-lactam antibiotics can be safely used in a patient with a history of allergy to penicillins?AztreonamCefepimeLoracarbefCeftriaxone  <response>: Ans. A AztreonamRef: KDT 8e p781Aztreonam is the only beta lactam antibiotic that can be used in patients having severe allergy to penicillins or cephalosporins as it is not cross allergenic. 