Comparison of Different Phenotypic Tests versus PCR in the Detection of Carbapenemase-Producing Pseudomonas aeruginosa Isolates in Hamadan, Iran

Table 3

Results of MIC and different phenotypic tests for carbapenemase genes.

Gene related to carbapenem resistance	MIC imipenem	CDDT	MHT	CIM	CarbaNP
KPC	>32	6/11	5/11	11/11	11/11
IMP	8 to >32	13/20	15/20	20/20	20/20
VIM	8 to >32	10/19	14/19	19/19	19/19
AMPC	8 to>32	16/25	14/25	22/25	24/25
OXA-48	8 to>32	20/35	18/35	33/35	34/35
SIM	8 to >32	3/8	4/8	8/8	8/8
SPM	16	10/17	11/17	17/17	17/17
GIM	8	3/6	3/6	6/6	6/6
KPC + IMP + AMPC	8 to >32	2/2	2/2	2/2	2/2
KPC + AMPC + OXA-48	16	2/3	1/3	3/3	3/3
IMP + VIM + OXA-48	8	3/6	6/6	6/6	6/6
IMP + AMPC + OXA-48	>32	3/5	4/5	4/5	5/5
IMP + KPC + OXA-48	>32	1/1	1/1	1/1	1/1
VIM + KPC + AMPC	>32	1/3	3/3	3/3	3/3
VIM + KPC + AMPC + OXA-48	8	0/1	1/1	1/1	1/1
IMP + VIM + AMPC	4–8	2/4	4/4	4/4	4/4
KPC + OXA-48+VIM + AMPC	>32	1/1	1/1	1/1	1/1
IMP + AMPC	8	8/11	8/11	11/11	11/11
VIM + KPC	16	3/5	4/5	5/5	5/5
Not detected	<0.25-2	44/48	45/48	48/48	48/48