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Table 2 Microbiologic characteristics of 279 patients who had positive growth of wound cultures

From: The microbiological profile and presence of bloodstream infection influence mortality rates in necrotizing fasciitis

Variable

Single etiologic agent

(n= 126)

Multiple etiologic agents

(n= 153)

P-value

Gram-positive cocci

   

Aerobic

   

   Staphylococcus aureus

   

Methicillin-susceptible S. aureus

27 (21.4)

15 (9.8)

0.007*

Methicillin-resistant S. aureus

20 (15.9)

34 (22.2)

0.182

   Coagulase-negative Staphylococcus

2 (1.6)

11 (7.2)

0.042*

   Streptococcus

   

Beta-hemolytic (Group A)

13 (10.3)

24 (15.7)

0.188

Beta-hemolytic (Group B)

2 (1.6)

4 (2.6)

0.693

Non-group A or B

-

2 (0.7)

-

S. viridans

2(1.6)

36 (23.5)

<0.001*

   Enterococcus faecalis

1(0.8)

45 (29.4)

<0.001*

Anaerobic

   

   Peptostreptococcus

-

38 (13.6)

-

Gram-positive rods

   

Aerobic

   

   Corynebacterium

-

8 (2.9)

-

Anaerobic

   

   Clostridium spp.

-

5 (1.8)

-

Gram negative rods

   

Aerobic

   

   Acinetobacter baumannii

3 (2.4)

20 (13.1)

0.001*

   Aeromonas spp.

11 (8.7)

11 (7.2)

0.635

   Citrobacter spp.

2 (1.6)

9 (5.9)

0.119

   E.coli.

2 (1.6)

35 (22.9)

<0.001*

   Enterobacter spp.

1 (0.8)

19 (12.4)

<0.001*

   Klebsiella pneumoniae

13 (10.3)

28 (18.3)

0.061

   Pseudomonas aeruginosa

3 (2.4)

16 (10.5)

0.008*

   Vibrio spp.

21 (17.5)

-

-

   Eikenella corrodens

-

4 (2.6)

-

   Klebsiella oxytoca

-

3 (2.0)

-

   Proteus mirabillis

-

23 (15.0)

-

   Serratia marcescens

-

7 (4.6)

-

   Other gram negative rods

1 (0.8)

15 (9.2)

0.002*

Anaerobic

   

   Prevotella spp.

2 (1.6)

10 (6.5)

0.071

   Bacteroides fragilis

-

15 (9.8)

-

   Fusobacterium

-

1 (0.7)

-

   Veillonella

-

3 (2.0)

-

Fungus

-

6 (3.9)

-

  1. Data were summarized as n (%) for the subjects with positive growth of wound culture by single etiologic agent, and multiple etiologic agent, respectively.
  2. * P <0.05 significantly different between single, and multiple etiologic agents, P-values were derived through Pearson Chi-square test, or Fisher's exact test.
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Critical Care

ISSN: 1364-8535