Table 4.

Antimicrobial susceptibility test of Gram-negative isolates from patients with external ocular infection at UoGCSH, from May 1 to July 30, 2023

Organism isolated	ASP	CIP n(%)	SXT n(%)	AMP n(%)	TE n(%)	CN n(%)	CAZ n(%)	PIP n(%)	CRO n(%	TOR n(%)	IMI n(%)
P. aeruginosa (N = 24)	R I S	10(41.7%) 1(4.2%) 13(54.2%)	NA	NA	NA	11(45.8%) 0 13(54.2%)	11(45.8%) 0 13(54.2%)	17(70.8%) 0 7 (29.2%)	9(37.5%) 0 15(62.5%)	4(16.7%) 0 20(83.3%)	2(8.3%) 0 22(91.7%)
E. coil (N = 12)	R I S	3(25%) 0 9(75%)	4(33.3%) 0 8(66.7%)	10(83.3%) 0 10(83.3%)	9(75%) 0 3(25%)	4(33.3%) 0 8(66.7%)	NA	NA	4(33.3%) 0 8(66.7%)	NA	1(8.3%) 0 11(91.7%)
K. pneumoniae (N = 11)	R I S	3(27.3%) 0 8(72.7%)	4(36.4%) 0 7(63.6%)	11(100%) 0 0	7(63.7%) 0 4(36.4%)	3(27.3%) 0 8(72.7%)	NA	NA	4(36.4%) 0 7(63.6%)	NA	2(18.2%) 0 9(81.8%)
Proteus spp., (N = 5)	R I S	1(20%) 0 4(80%)	2(40%) 0 3(60%)	4(80%) 0 1(20%)	1(20%) 0 4(80%)	0 0 5(100%)	NA	NA	1(20%) 0 4(80%)	NA	0 0 5(100%)
Acinetobacter spp., (N = 2)	R I S	0 0 2(100%)	0 0 2(100%)	1(50%) 0 1(50%)	1(50%) 0 1(50%)	0 0 2(100%)	NA	NA	0 0 2(100%)	NA	0 0 2(100%)
Total (N = 54)	R S	18(33.3%) 36(66.7%)	10(33.3%) 20(66.7%)	26(86.7%) 4(21.1%)	18(60%) 12(40%)	18(33.3%) 36(66.7%)	11(45.8%) 13(54.2%)	17(70.8%) 7(29.2%)	18(33.3%) 36(66.7%)	4(16.7%) 20(83.3%)	5(9.3%) 49(90.7%)

ASP Antimicrobial susceptibility pattern, CIP Ciprofloxacin, CN Gentamycin, n number, SXT Cotrimoxazole, TE Tetracycline, TOR Tobramycin, P Piperacillin, AMP Ampicillin, CAZ Ceftazidime, CRO Ceftriaxone, IMI Imipenem, NA Not applicable S Susceptible, I Intermediate R Resistance