The number of debris particles in the first aspirated blood sample compared with each of the other aspirated blood samples
| Order of Aspiration | |||||||
|---|---|---|---|---|---|---|---|
| 1st (n = 13) | 2nd (n = 13) | 3rd (n = 13) | 4th (n = 13) | 5th (n = 13) | 6th (n = 2) | Total (n = 13) | |
| No. of debris particles ≥1 mm (mean) | 0.5 ± 0.8 | 6.2 ± 4.2a | 5.2 ± 3.8a | 4.5 ± 3.5a | 1.5 ± 2.2 | 4 ± 1.4 | 19.1 ± 12.0 |
| No. of debris particles <1 but ≥0.5 mm (mean) | 1.4 ± 1.1 | 9.3 ± 5.5a | 7.9 ± 3.5a | 7.2 ± 4.0a | 4.4 ± 4.1a | 7.5 ± 2.1 | 31.5 ± 15.5 |
| No. of debris particles <0.5 but ≥0.1 mm (mean) | 38.2 ± 12.9 | 43.8 ± 18.3 | 41.4 ± 12.3 | 37.9 ± 20.1 | 29.7 ± 12.6 | 33.5 ± 5.0 | 197.5 ± 50.5 |
a Statistically significant difference in comparison with the first blood sample (P< .05).