Table 2. Sensitivity, intermediate resistance, and resistance frequency of isolated gram negative bacteria to different tested antimicrobials during 2013, 2014, and 2015 at the nephrology ward .

Antimicrobial agent/Microorganism	Sensitive (n)			Intermediate (n)			Resistant (n)
	2013	2014	2015	2013	2014	2015	2013	2014	2015
Trimethoprim/Sulfamethoxazole
Number	22	35	10	-	2	1	45	74	31
Percent	32.8	31.5	23.8	-	1.8	2.4	67.2	66.7	73.8
Amikacin
Number	51	52	19	25	25	13	41	35	12
Percent	43.6	46.4	43.2	21.4	22.3	29.6	35	31.3	27.3
Gentamicin
Number	20	62	17	1	3	2	28	49	23
Percent	40.8	54.4	40.5	2	2.6	4.8	57.1	42.9	54.8
Ciprofloxacin
Number	46	51	15	1	1	4	66	67	28
Percent	40.7	42.9	31.9	0.9	0.8	8.5	58.4	56.3	59.6
Nitrofurantoin
Number	4	39	15	1	13	3	33	26	5
Percent	10.5	50	65.2	2.6	16.7	13	86.8	33.3	21.7
Chloramphenicol
Number	18	24	9	3	-	1	23	17	7
Percent	40.9	58.5	52.9	6.8	-	5.9	52.3	41.5	41.2
Cephalexin
Number	2	20	6	-	2	2	44	82	32
Percent	4.4	19.2	15	-	1.9	5	95.7	78.9	80
Cefixime
Number	12	31	4	3	1	-	-	77	33
Percent	80	28.4	10.8	20	0.9	-	-	70.6	89.2
Ceftriaxone
Number	-	23	6	2	1	-	37	50	20
Percent	-	31.1	23.1	5.1	1.4	-	94.9	67.6	76.9
Cefotaxime
Number	-	8	8	-	-	-	1	32	19
Percent	-	20	29.6	-	-	-	100	80	70.4
Ceftazidime
Number	-	-	-	-	1	-	-	3	4
Percent	-	-	-	-	25	-	-	75	100
Ceftizoxime
Number	6	29	3	-	6	2	37	37	12
Percent	13.9	40.3	17.7	-	8.3	11.8	86.1	51.4	70.6
Imipenem
Number	5	4	11	1	-	1	6	6	13
Percent	41.7	40	44	8.3	-	4	50	60	52
Colistin
Number	-	3	19	-	-	1	-	-	1
Percent	-	100	90.5	-	-	4.8	-	-	4.8
Total number	186	381	142	37	55	30	361	555	240
Total percent	31.9	38.5	34.5	6.3	5.6	7.3	61.8	56	58.3