Table 2. Potency of antipseudomonal agents in the presence of various phenotypic resistance profiles.

Phenotype profile	% susceptibility
	N [%]	ATM	C/T	FEP	CAZ	IPM	MEM	TZP
NS to ATM	410 [34]	–	88	44	49	46	45	35
NS to C/T	55 [5]	11	–	9	7	25	22	15
NS to CAZ	267 [22]	21	81	20	–	39	41	14
NS to FEP	287 [24]	20	83	–	25	38	35	19
NS to IPM	392 [32]	44	90	54	59	–	27	49
NS to MEM	316 [26]	28	86	41	50	10	–	36
NS to TZP	322 [27]	17	85	28	29	39	38	-
NS to carbapenemsa	432 [36]	41	89	54	60	7	25	48
MDR	153 [13]	12	74	6	10	5	6	8
NS to 1 or more agentb	648 [54]	37	92	56	59	40	51	50
NS to all agentsc	118 [10]	–	75	–	–	–	–	–

Aztreonam (ATM), ceftolozane/tazobactam (C/T), cefepime (FEP), ceftazidime (CAZ), imipenem (IPM), meropenem (MEM) and piperacillin/tazobactam (TZP) against P. aeruginosa. ^a, carbapenem non-susceptibility defined as non-susceptible to IPM or MEM with MIC of >2 mg/L; ^b, antipseudomonal agents tested in this study (ATM, C/T, FEP, CAZ, IPM, MEM, and TZP); ^c, antipseudomonal agents tested in this study other than the compound of interest (ATM, FEP, CAZ, IPM, MEM, and TZP). MDR, multidrug resistant; MIC, minimum inhibitory concentration; NS, non-susceptible.