HAP	Hospital-acquired pneumonia
VAP	Ventilator-associated pneumonia
ELF	Pulmonary Epithelial lining fluid
PK	Pharmacokinetic
PK/PD	pharmacokinetic/pharmacodynamic
BALF	Bronchoalveolar lavage fluid
ICU	Intensive care units
MDR	Multidrug-resistant
CRAB	Carbapenem-resistant Acinetobacter baumannii
CRKP	Carbapenem-resistant Klebsiella pneumoniae
XDR	Extensively drug-resistant
CRE	Carbapenem-resistant Enterobacteriaceae
cIAI	Complicated intra-abdominal infections
TFA	Trifluoroacetic acid
MRM	Multiple reaction monitoring
NS	Normal saline
LLOQ	Lower limit of quantification
MF	Matrix factor
DF	Dilution factor
ESI	Electrospray ionization
BAL	Bronchoalveolar lavage
TDM	therapeutic drug monitoring
fAUC/MIC	free area under the concentration–time curve to the minimum inhibitory concentration
PTA	probability of target attainment
PPK	population pharmacokinetic