^a Ceftazidime component. Ceftazidime in a 4:1 fixed-ratio concentration with avibactam.

^b Tested in FOLFusor polyisoprene elastomeric pumps (Baxter).

^c Tested in polypropylene syringes.

^d Tested in Dosi-fuser (Leventon) and Easypump II LT (B. Braun) elastomeric pumps.