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Table 1 Patient characteristics and bacterial isolates from conjunctival Samples, pre- and post-treatment with chlorhexidine (CHX)

From: Preoperative preparation of eye with chlorhexidine solution significantly reduces bacterial load prior to 23-gauge vitrectomy in Swedish health care

Eye

Gender

Diagnosis

Bacterial isolates

Total CFU/mL

Start

CHX

Start

CHX

1

F

ERM

2+

2+

60

380

2

F

MH

3+

260

3

M

MH

1+

1+

360

240

4

F

MH

3+

500

5

F

MH

6

M

MH

3+

3+

4180

480

7

F

MH

1+

40

8

M

ERM

1+

40

9

M

ERM

1+

60

10

F

ERM

11

M

MH

12

F

MH

2+

1+

2040

60

13

F

ERM

3+

300

14

F

MH

15

F

ERM

1+

20

16

F

ERM

2+

3+

60

140

17

F

MH

2+

1+

60

20

18

F

ERM

2+

1+

160

40

19

M

MH

2+

1+

660

280

20

F

ERM

1+

60

21

M

ERM

3+

1+

620

40

22

M

ERM

2+

40

23

F

MH

1+

40

24

F

MH

1+

1+

140

20

25

F

ERM

1+

40

26

M

VMT

3+

540

27

M

ERM

3+

340

28

F

MH

2+

40

29

F

MH

2+

2+

2400

240

30

M

ERM

2+

1040

31

M

ERM

2+

1+

420

140

32

M

ERM

1+

120

33

F

ERM

2+

100

34

M

ERM

2+

1+

220

40

35

M

ERM

1+

60

36

M

ERM

3+

940

37

F

MH

1+

2+

1000

880

38

F

ERM

1+

1000

39

F

MH

1+

1+

200

40

40

F

ERM

1+

20

All culture positive eyes

33

18

  

Reduction

 

45%

  

P value

 

0.0023a

  

All isolates/All CFU

61

26

17,980 CFU

3240 CFU

Reduction

 

57%

 

82%

P value

 

0.0004b

 

<0.0001b

  1. Culture positive (+) isolates/sample: 1, 2 or 3. Culture negative (−). a McNemar’s test for case-control of paired samples (culture ±) two-tailed. b Wilcoxon Signed-Rank test for paired samples, two tailed