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Table 2 Microbiological results of peritoneal samples and antimicrobial therapy in bacteraemic and non-bacteraemic patients

From: Clinical characteristics and prognosis of bacteraemia during postoperative intra-abdominal infections

Microbiological results

Bacteraemic patients (n = 64)

Patients without bacteraemia (n = 279)

Blood cultures

Surgical samples

Surgical samples

Total number of microorganisms

75

215

807

Gram-negative aerobic bacteria, n (%)

32 (43)

97 (45)

312 (39)

 Enterobacteriaceae, n (%)

27 (36)

86 (40)

254 (31)

  Escherichia coli, n (%)

13 (17)

42 (20)

124 (15)

  Klebsiella spp., n (%)

3 (4)

10 (5)

34 (4)

  Enterobacter spp., n (%)

8 (11)

17 (8)

44 (5)

  Other Enterobacteriaceae, n (%)

3 (4)

17 (8)

52 (6)

 Non-fermenting Gram-negative bacteria, n (%)

4 ()

10 (5)

44 (5)

  Pseudomonas aeruginosa, n (%)

3 (4)

9 (4)

39 (5)

Miscellaneous Gram-negative bacilli, n (%)

1 (1)

1 (0.5)

14 (2)

Gram-positive aerobic bacteria, n (%)

22 (29)

73 (34)

308 (38)

 Staphylococcus aureus, n (%)

5 (7)

4 (2)

26 (3)

 Coagulase-negative staphylococci, n (%)

5 (7)

8 (4)

50 (6)

 Streptococcus spp., n (%)

8 (11)

21 (10)

75 (9)

 Enterococcus spp., n (%)

3 (4)

38 (18)

151 (19)

 Miscellaneous Gram-positive cocci, n (%)

1 (1)

2 (1)

6 (1)

Anaerobic bacteria, n (%)

14 (19)

22 (10)

76 (9)

 Bacteroides spp., n (%)

12 (16)

18 (8)

46 (6)

 Other anaerobes, n (%)

2 (3)

4 (2)

30 (4)

Multidrug-resistant bacteria, n (%)

14 (19)

26 (12)

113 (14)

Fungi, n (%)

7 (9)

23 (11)

110 (14)

 Candida albicans, n (%)

3 (4)

13 (6)

71 (9)

 Non-albicans Candida spp., n (%)

3 (4)

9 (4)

32 (4)

  1. Proportions calculated as number of isolates