BL/BLI	β-lactam/β-lactamase inhibitor
BSI	blood stream infections
CRE	carbapenem-resistant Enterobacteriales
CAZ/AVI	ceftazidime/avibactam
C/T	ceftolozane/tazobactam
cIAI	complicated intra-abdominal infections
cUTI	complicated urinary tract infections
DTR	difficult-to-treat resistance
ESBL	Extended-spectrum Beta-lactamase
GNB	Gram-negative bacteria
HAP	hospital acquired pneumonia
IMP	imipenemase
KPC	Klebsiella pneumoniae carbapenemases
MBL	metallo β-lactamases
MDR	multidrug resistant
NDM	new Delhi metallo beta-lactamase
PDR	pandrug resistant
NP	nosocomial pneumonia
OXA	oxacillinases
VAP	Ventilator associated pneumonia
VIM	Verona integron-borne metallo-β-lactamase
XDR	extensive drug resistance