Spread of TEM, VIM, SHV, and CTX-M β-Lactamases in Imipenem-Resistant Gram-Negative Bacilli Isolated from Egyptian Hospitals

Table 5

Antimicrobial susceptibility patterns by disc diffusion method.

Antibiotic	Antimicrobial susceptibility patterns of all Gram-negative bacilli isolates
	Susceptible		Intermediate		Resistant
	Number	(%)	Number	(%)	Number	(%)
Imipenem	31	47.7	1	1.5	33	50.8
Amikacin	40	61.5	1	1.5	24	44.6
Ciprofloxacin	35	53.8	3	4.6	27	41.5
Piperacillin	15	23.1	6	9.2	44	67.7
Cefoperazone/sulbactam	21	32.3	4	6.1	40	61.5
Cefoxitin	12	18.4	0	0.00	53	81.5
Cefotaxime	0	0.00	0	0.00	65	100.00

  (statistically significant).