TABLE 1.

Resistance rates to clinically relevant antibiotics among collected isolates.

Regions		Central	Western		Eastern
City		Riyadh	Jeddah	Al Madinah	Al Ahsa	Dammam	Total
Isolates		162	275	67	86	45	635
Antibiotics	IMI	35.80	28.00	20.90	23.26	13.33	27.56
	MEM	33.95	21.45	20.90	19.77	6.67	23.31
	IMI and MEM	33.33	20.00	20.90	19.77	6.67	22.52
	IMI or MEM	36.42	29.45	20.90	23.26	13.33	28.35
	CAZ	19.14	13.45	11.94	12.79	6.67	14.17
	FEB	10.49	6.90	8.96	11.90	4.44	8.53
	PIP/TAZ	33.75	6.79	19.40	15.29	4.65	16.33
	AMK	9.26	6.18	11.94	2.33	4.44	6.93
	GM	10.49	7.66	13.43	2.35	4.44	8.06
	TOB	10.56	7.14	15.15	0.00	0.00	7.61
	CIP	19.75	16.73	20.90	10.47	4.44	16.22
	CST	2.53	4.52	9.09	1.23	0.00	3.83

Breakpoints amikacin (AMK) ≥ 64 mg/L; cefepime (FEB) ≥ 32 mg/L; ceftazidime (CAZ) ≥ 32 mg/L; ciprofloxacin (CIP) ≥ 2 mg/L; colistin (COL) ≥ 4 mg/L; piperacillin/tazobactam (PIP/TAZ) ≥ 128/4 mg/L; imipenem (IMI) and meropenem (MER) ≥ 8 mg/L; tobramycin (TOB) and gentamicin (GEN) ≥ 16 mg/L.