- Patient must be ≥18 and ≤90 years of age
- Female patients can participate if they are surgically sterile or completed menopause
or females capable of having children and agree not to attempt pregnancy while
receiving IV study therapy and for a period of 7 days after
- Patient has a ceftazidime-resistant Gram negative pathogen that was isolated from an
appropriate culture within 5 days prior to study entry (ie, within 5 days prior to
Screening; the study-qualifying culture), which was determined to be the causative
agent of the entry infection
- Patient has an APACHE II score >30 (cIAI patients only)
- Patient has an infection due to Gram negative pathogen that is unlikely to respond to
CAZ-AVI treatment (eg, Acinetobacter spp., Stenotrophomonas spp.)
- Patient is receiving hemodialysis or peritoneal dialysis or had a renal transplant
Patient is immunocompromised
- Patient has a rapidly progressive or terminal illness with a high risk of mortality
due to any cause, including acute hepatic failure, respiratory failure or severe
septic shock such that they are unlikely to survive the 4- to 5-week study period.