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Table 2 Microorganisms cultured from peritoneal fluid during initial septic surgery in patients without and with persistent peritonitis

From: Dynamic changes of microbial flora and therapeutic consequences in persistent peritonitis

Microorganisms Without persistent peritonitis Persistent peritonitis P
Aerobes, n (%) 292 (78) 209 (73) 0.17
 Gram-positive bacteria, n (%) 141 (38) 94 (33) 0.21
  Enterococci, n (%) 71 (19) 45 (16) 0.29
   E. faecalis, n (%) 40 (11) 21 (7) 0.17
   E. faecium, n (%) 16 (4) 12 (4) 1.0
  Streptococci, n (%) 32 (9) 34 (12) 0.15
  Staphylococci, n (%) 37 (10) 13 (5) 0.011
   Staphylococcus aureus, n (%) 12 (3) 3 (1) 0.11
  Coagulase-negative staphylococci, n (%) 25 (7) 10 (4) 0.08
 Gram-negative bacteria, n (%) 151 (40) 115 (40) 0.98
   Enterobacteriaceae, n (%) 122 (32) 95 (33) 0.83
   Escherichia coli, n (%) 56 (15) 48 (17) 0.50
  Enterobacter spp, n (%) 20 (5) 12 (4) 0.58
  Klebsiella spp, n (%) 20 (5) 11 (4) 0.45
  Morganella spp, n (%) 10 (3) 10 (4) 0.64
  Proteus spp, n (%) 11 (3) 5 (2) 0.44
 Non-fermenting Gram-negative bacilli, n (%) 24 (6) 12 (4) 0.23
   Pseudomonas aeruginosa, n (%) 22 (6) 12 (4) 0.37
Anaerobes, n (%) 48 (13) 34 (12) 0.73
  Bacteroides spp, n (%) 31 (8) 28 (10) 0.49
Fungi, n (%) 36 (10) 43 (15) 0.03
   Candida albicans, n (%) 23 (6) 34 (12) 0.011
  Candida non-albicans, n (%) 13 (3) 8 (3) 0.66
Total number of microorganisms, n 376 286  
Total number of MDR bacteria, n (%) 49 (13) 35 (14) 0.76
  1. Results are expressed as number of isolates in each group.