ID Board Review/Antimicrobial Therapy/Antibacterials/β-Lactams/Monobactams/Aztreonam


 * Aztreonam has good gram-negative coverage
 * It's often used for patients with beta-lactam allergies
 * The one exception is ceftazidime, which has the same side chain, and can cause cross-reactivity
 * It can also be used as an alternative to aminoglycosides, since aztreonam isn't ototoxic or nephrotoxic