The blood culture from a patient of febrile neutropenia has grown Pseudomonas aeruginosa, It was found to be a producer of extended spectrum beta lactamase enzyme. The best choice of antimicrobial therapy should be -
Ans. is 'd' i.e., Impipenem + Amikacin
Ceftazidine + amikacin
Aztreonam +Amikacin
Cefpirome + amikacin
Imipenem +Amikacin