Table 3.

Drug resistance pattern of major Gram-negative isolates.

Antimicrobial tested	E. Coli (n = 20)		Klebsiella (n = 13)##	Pseudomonas (n = 7)
	Mini API (n = 12)	Vitek (n = 8)	Vitek (n = 13)	Mini API (n = 1)	Vitek (n = 6)
Amoxicillin	92	100	100	100	100
Ceftriaxone	92	100	100	100	100
Ceftazidime	92	87.50	92	0	67
Cefepime	84	75	92	0	50
Amoxicillin + clavulanate	84	100	100	100	100
Cefotaxime + clavulanate	40	37.50	72	100	83
Ceftazidime + clavulanate	40	37.50	54	100	67
Ticarcillin + clavulanate	58	NP	NP	0	NP
Piperacillin + tazobactam	50	50	77	0	33
Cefoperazone + sulbactam	NP	12.50	62	NP	33
Cefepime + tazobactam	NP	37.50	54	NP	33
Imipenem	10	0	54	0	33
Meropenem	10	12.50	70	0	33
Ertapenem	NP	NP	62	NP	NP
Colistin	NP	0	8	0	0
Tigecycline	NP	0	54	NP	67
Gentamycin	42	37.50	54	0	33
Amikacin	30	12.50	46	0	33
Ciproflox	92	87.50	77	0	33
Levoflox	92	87.50	77	0	33
Nalidixic acid	92	87.50	84	NP	NP
Nitrofurantoin	58	70	84	100	83
Tetracycline	75	75	84	100	83
Doxycycline	75	75	84	100	83
Minocycline	75	75	84	100	83

Figures are in percentage; N.P: drug not in panel; ^##all the Klebsiella isolates were tested on Vitek 2.