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Table 4 Results from microbiological testing of bile aspirates (all examinations)

From: Transmission of oral microbiota to the biliary tract during endoscopic retrograde cholangiography

Cultured organisms

Total

No Cholangitis

Cholangitis

p-value

Gram positive bacteria

 Enterococcus avium

3/(96)

1/(64)

2/(32)

0.231

 Enterococcus casseliflavus

2/(97)

1/(64)

1(33)

0.638

 Enterococcus faecalis

11/(88)

7/(58)

4/(30)

0.881

 Enterococcus faecium

27/(72)

18/(47)

9/(25)

0.897

 Enterococcus gallinarum

2/(97)

2/(63)

0/(34)

0.301

 Enterococcus sp.

7/(92)

5/(60)

2/(32)

0.739

 Staphylococcus aureus (MRSA)

4/(95)

4/(61)

0/(34)

0.401

 Staphylococcus haemolyticus

1/(98)

1/(64)

0/(34)

0.467

 Streptococcus anginosus

3/(96)

3/(62)

0/(34)

0.203

 Streptococcus milleri

1/(98)

1/(64)

0/(34)

0.467

 Streptococcus viridans

12/(87)

5/(60)

7(27)

0.062

Gram negative bacteria

 Bacteroides fragilis

3/(96)

0/(65)

3/(31)

0.015

 Citrobacter braakii

2/(97)

2/(63)

0/(34)

0.301

 Citrobacter sp.

1/(98)

0/(65)

1/(33)

na

 Enterobacter cloacae

6/(93)

4/(61)

2/(32)

0.957

 Enterobacter ludwigii

1/(98)

1/(64)

0/(34)

na

 Enterobacter sp.

4/(95)

2/(63)

2/(32)

0.999

 Escherichia coli

34/(65)

18/(47)

16/(18)

0.054

 Hafnia alvei

1/(98)

1/(64)

0/(34)

na

 Klebsiella oxytoca

7(92)

6/(59)

1/(33)

0.246

 Klebsiella pneumoniae

12/(87)

9/(56)

3/(31)

0.467

 Klebsiella sp.

7(92)

3/(62)

4/(30)

0.188

 Morganella morganii

4/(95)

2/(63)

2/(32)

0.999

 Pseudomonas aeruginosa

4/(94)

1/(64)

3/(31)

0.080

 Proteus mirabilis

2/(97)

1/(64)

1/(33)

0.999

 Proteus vulgaris

1/(98)

1/(64)

0/(34)

na

 Raoultella ornithinolytica

1/(98)

1/(64)

0/(34)

na

 Serratia marcescens

3/(96)

3/(62)

0/(34)

0.203

 Stenotrophomonas maltophilia

1/(98)

0/(65)

0/(33)

na

Fungi

 Aspergillus fumigatus

1/(98)

1/(64)

0/(34)

na

 Candida albicans

11/(88)

8/(57)

3/(31)

0.600

 Candida glabrata

1/(98)

1/(64)

0/(34)

na

 Candida kruseii

2/(97)

2/(63)

0/(34)

0.301

 Candida sp.

9(90)

5/(60)

4/(30)

0.503

  1. Numbers indicate the number of aspirates in which the indicated organism was cultured. Numbers in parentheses indicates negative specimen
  2. Abbreviations in order of their appearance: ERC endoscopic retrograde cholangiography, na not applicable, MRSA multiresistent Staphylococcus aureus, sp species