Table 2:
Arterial blood gas before and 48-hours after the initiation of extracorporeal membrane oxygenation (ECMO) for patients who experienced stroke versus those without stroke.
| Variables | No Stroke (N=552) |
Stroke (N=43) |
Total (N=595) |
|---|---|---|---|
| Pre-ECMO arterial blood gas | |||
| PaO2, mmHg | 69.2 (1.4) | 63.5 (1.4) | 68.7 (1.4) |
| PaCO2, mmHg | 58.4 (1.4) | 67.7 (1.3) | 59.1 (1.4) |
| PaO2/FiO2 ratio | 79.4 (1.5) | 69.5 (1.5) | 78.7 (1.5) |
| Post-ECMO arterial blood gas (48-hours) | |||
| PaO2, mmHg | 73.8 (1.3) | 74.8 (1.3) | 73.9 (1.3) |
| PaCO2, mmHg | 46.6 (1.2) | 47 (41,56.3) | 47 (41,54) |
| PaO2/FiO2 ratio | 130 (86.2,176.4) | 139.3 (87.9,165) | 130 (86.5,175.9) |
| Δ PaO2, mmHg | 5 (−10,21) | 12.0 (−2,31) | 5.0 (−9,22) |
| Δ PaCO2, mmHg | −9.0 (−25, −1) | −17 (−32, −7) | −9 (−26, −1) |
| Relative Δ PaO2, % | 7 (−15, 34) | 24 (−2,50) | 7 (−14,37) |
| Relative Δ PaCO2, % | −17 (−36, −2) | −26 (−40, −11) | −17 (−37, −3) |
Data are geometric mean (SD), or median (inter-quartile range) for changes pre to post-ECMO. Δ PaCO2 = pre-and post-ECMO difference in carbon dioxide tension, Δ PaO2 = pre-and post-ECMO difference in oxygen tension, ECMO = Extracorporeal Membrane Oxygenation, PaCO2 = Partial pressure of carbon dioxide, PaO2 = Partial pressure of oxygen, Relative Δ PaCO2 = 48-h post-ECMO PaCO2 - pre-ECMO PaCO2)/pre-ECMO PaCO2, Relative Δ PaO2= 48-h post-ECMO Pa O2 - pre-ECMO Pa O2)/pre-ECMO Pa O2.