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Table 2 Number of ampules by number of glass particles (n = 180)

From: The effect of different methods of intravenous injection on glass particle contamination from ampules

Group

Number of glass particles

χ 2

p

≤50

51–100

101–150

151–200

201–300

>300

1

13 (28.9)

13 (28.9)

6 (13.3)

5 (11.1)

6 (13.3)

2 (4.4)

11.14

0.743

2

12 (26.7)

13 (28.9)

6 (13.3)

7 (15.6)

6 (13.3)

1 (2.2)

3

14 (31.1)

13 (28.9)

4 (8.9)

7 (15.6)

5 (11.1)

2 (4.4)

4

10 (22.2)

19 (42.2)

10 (22.2)

4 (8.9)

2 (4.4)

0 (0.0)

Total

49 (27.2)

58 (32.2)

26 (14.4)

23 (12.8)

19 (10.6)

5 (2.8)

  
  1. Group 1 IV bolus injection directly after immediate aspiration, Group 2 IV bolus injection directly after 2 min’ delayed aspiration, Group 3 IV bolus injection directly after aspiration with a filter needle syringe and Group 4 Side shooting to an infusion set with an in-line filter
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