10.carbapenems monobactams and beta lactamase inhibitors Flashcards

1
Q

Monobactam

(“AZ-3M”)

A
  • *Aztreonam**
  • has activity against aerobic gram negative rods

-monobactams and carbapenems treat Pseudomonas infections

-monobactam treats serious systemic infection with gram negative pathogens
(meningitis, pneumonia, sepsis)

  • monobactams can be used in patients with a H/O penicillin allergy
  • monobactams are resistant to beta-lactamases, ring shape on gun to remind us that beta lactamases are encoded by plasmid genes. they cleave beta lactams
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2
Q

Carbapenems

(“hover car”)

A

Doripenem
Imipenem
Meropenem
Ertapenem

monobactams and Carbapenems treat pseudomonas infections

-broad spectrum carbapenems

-carbapenems treat anaerobic infections
(aspiration pneumonia, intra-abdominal infections)

“when others fail we get the job done”:
use of carbapenems with bugs resistant to other available treatments

-monobactam treats serious systemic infection with gram negative pathogens
(meningitis, pneumonia, sepsis)

  • imipenem inactivated by dehydropeptidase in renal tubules
  • cilastin inhibits dehydropeptidase in the renal tubules preventing degradation of imipenem

-GI side effects of carbapenems

  • carbapenem may cause skin rash
  • imipenem lowers the seizure threshold
  • monobactams are resistant to extended spectrum beta-lactamases
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3
Q

B-Lactamase inhibitors

A

Tazobactam
Sulbactam
Calvulanic acid

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