Determine the PK and Safety and Tolerability of ATM-AVI for the Treatment of cIAIs in Hospitalized Adults (REJUVENATE)

"Cohort 1:~(Creatinine clearance \> 50 mL/min)6500mg ATM/1777mg AVI on day 1 followed by total daily dose of 6000mg ATM/1640mg AVI~Cohorts 2 and 3:~(Creatinine clearance \> 50 mL/min) As above, or: 6500 mg ATM/2167 mg on Day 1 followed by a total daily dose of 6000 mg ATM/2000 m AVI~(Creatinine clearance 31 - 50 mL/min) 4250 mg ATM/1162 mg AVI on Day 1 followed by total daily dose 3000 mg ATM/820 mg AVI, or:~4250 mg ATM/1417 mg AVI on Day 1 followed by total daily dose 3000 mg ATM/1000 mg AVI"

Metronidazole 500mg infused over 1 hour every 8 hours