Table 3.
ROTEM Measurements.a
| Pretransfusionb | Posttransfusionb | Change (95% CI) | P Value | |
|---|---|---|---|---|
| α-angle, ° | 74 (62-77) | 75 (68-78) | 2 (0 to 3) | .008 |
| EXTEM CT, seconds | 53.0 (50.0-57.3) | 52.0 (49.0-57.0) | −1.0 (−3.0 to 1.2) | .27 |
| EXTEM A10, mm | 26.0 ± 9.9 | 37.7 ± 8.2 | 11.7 (9.2 to 14.2) | <.001 |
| EXTEM A20, mm | 32.2 ± 10.8 | 46.9 ±13.5 | 14.8 (10.6 to 18.9) | <.001 |
| EXTEM MCF, mm | 35.0 ± 10.1 | 48.1 ± 8.0 | 13.1 (10.5 to 15.8) | <.001 |
| EXTEM MCE | 57.6 ± 25.2 | 97.1 ± 28.9 | 39.6 (31.8 to 47.3) | <.001 |
| FIBTEM A10, mm | 15.9 ± 7.7 | 16.5 ± 6.9 | 0.6 (−0.1 to 1.3) | .10 |
| FIBTEM A20, mm | 17.3 ± 8.3 | 17.9 ± 7.4 | 0.6 (−0.1 to 1.3) | .08 |
| FIBTEM MCF, mm | 18.6 ± 8.6 | 19.3 ± 7.6 | 0.6 (−0.2 to 1.4) | .11 |
| FIBTEM MCE | 24.3 ± 14.1 | 25.0 ± 12.5 | 0.7 (−0.5 to 1.8) | .26 |
| Platelet component (EXTEM MCE − FIBTEM MCE) | 34.1 ± 18.1 | 73.0 ± 23.0 | 38.9 (30.7 to 47.0) | <.001 |
Abbreviations: CI, confidence interval; SD, standard deviation; IQR, interquartile range. Significant P values (<.05) are shown in bold.
aValues are presented as mean ± SD or median (IQR).
bData available for 35 of 36 platelet concentrate units for all measurements with the exception of pretransfusion EXTEM A20, where data were available for 34 of 36 platelet concentrate units.