Aztreonam is an antibiotic of the monobactam group. Like penicillin, it contains
a beta-lactam "ring", but it is not directly attached to another ring.
It can be used to treat infections by organisms such as susceptible gram-negative
bacteria, including Pseudomonas aeruginosa
, E. coli, Haemophilus, Klebsiella, Proteus
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