Prescribed antibiotic Effectiveness Prescribed empirically,
ineffective
Prescribed empirically As the second antibiotic As the third antibiotic As the fourth antibiotic
N (%) N (%) N (%) N (%) N (%)
Penicillin G +
metronidazole
(n = 59) 		36 (61) 1 (1.7) - - 22 (37.3)
Piperacillin-
tazobactam
(n = 14) 		- 11 (78.6) 1 (7.1) 2 (14.3) -
Cefuroxime +
metronidazole
(n = 13) 		10 (76.9) - - - 3 (23.1)
Cefazolin +
metronidazole
(n = 13) 		10 (76.9) 2 (15.4) - - 1 (7.7)
Cefazolin
(n = 6) 		4 (66.7) - - - 2 (33.3)
Ampicillin +
metronidazole
(n = 5) 		3 (60) - - - 2 (40)
Vancomycin
(n = 5) 		- 2 (40) - 2 (40) 1 (20)
Penicillin G
(n = 4) 		1 (25) 1 (25) - - 2 (50)
Ciprofloxacin
(n = 3) 		- 3 (100) - - 2 (40)
Cefoperazone-
Sulbactam
(n = 3) 		- 3 (100) - - -
Sultamycillin
(n = 2) 		- 2 (100) - - -
Amoksicillin +
clavulanic acid
(n = 2) 		1 (50) - - - 1 (50)
Cefuroxime
(n = 2) 		- 2 (100) - - -
Clindamycin
(n = 2) 		- 2 (100) - - -
Meropenem
(n = 2) 		- 1 (50) 1 (50) -
Linezolid
(n = 1) 		- - 1 (100) - -

Values are presented as the absolute number of patients (n) ant the corresponding percentage (%).