Table 1.
Baseline characteristics.
| Parameter |
No Broken Ribs (N = 11) |
Left Broken Ribs (N = 13) |
Right Broken Ribs (N = 7) |
p value |
|---|---|---|---|---|
| Weight (kg) | 38.0 ± 2.7 | 39.7 ± 3.3 | 40.9 ± 2.4 | 0.25 |
| CPR Method: Standard | 4 | 4 | 1 | 0.59 |
| CPR Method: ITD-ACD | 7 | 9 | 6 | |
| Number of Fractured Ribs (n) | 0 | 4.0 ± 0.7 | 4.1 ± 1.1 | <0.0001 |
| Time to fracture (seconds) | 0 | 92.4 ± 47.9 | 130.3 ± 39.8 | <0.0001 |
| ROSC | 2 | 13 | 5 | 0.10 |
| Baseline Hemodynamics (Before Ribs Were Fractured) | ||||
| CPP (mmHg) | 10.8 ± 6.1 | 16.1 ± 8.6 | 18.4 ± 4.6 | 0.07 |
| Systolic Aortic Pressure (mmHg) | 43.6 ± 12.8 | 51.6 ± 20.1 | 46.7 ± 8.0 | 0.46 |
| Mean Aortic Pressure (mmHg) | 24.2 ± 6.7 | 31.0 ± 10.2 | 28.2 ± 4.2 | 0.14 |
| Right Atrial Pressure (mmHg) | 21.5 ± 10.0 | 22.1 ± 5.5 | 19.5 ± 5.8 | 0.76 |
| End Tidal CO2 (mmHg) | 31.6 ± 6.8 | 30.4 ± 15.1 | 26.0 ± 3.3 | 0.63 |
CPR: cardiopulmonary resuscitation, ACD/ITD: active compression/decompression and impedance threshold device, CPP: coronary perfusion pressure.
Categorical variables were compared by the chi-squared test. Continuous variables were compared by the analysis of variance (ANOVA) test.