Table 2.
Extracorporeal membrane oxygenation (ECMO) and patient parameter averages during ECMO support.
| Group 1 (n = 7) | Group 2 (n = 8) | Group 3 (n = 10) | ||||
|---|---|---|---|---|---|---|
| Hours 0–50 |
Hours 51–100 |
p Values |
||||
| Pulse Pressure <16.5 | Pulse Pressure >16.5 | Pulse Pressure >16.5 | Group 1 vs. 2 | Group 2 vs. 3 | ||
| Pulse pressure (mmHg) | 7.6 ± 4.7 | 28.6 ± 4.1 | 29.7 ± 7.2 | .000 | .722 | |
| Blood gases | ECMO PaCO2 (mmHg) | 43.1 ± 6.4 | 52.7 ± 13.2* | 44.8 ± 6.5* | .121 | .180 |
| Right radial PaCO2 (mmHg) | 41.7 ± 7.1 | 30.5 ± 5.4 | 35.2 ± 5.2 | .012 | .105 | |
| ECMO PaO2 (mmHg) | 197.6 ± 42.8 | 164.3 ± 58.5 | 186.4 ± 23.0† | .272 | .373 | |
| Right radial PaO2 (mmHg) | 188.9 ± 58.9 | 161.5 ± 58.7 | 124.7 ± 20.1 | .435 | .150 | |
| ECMO settings | FiO2 (%) | 76.4 ± 9.6 | 77.5 ± 4.3 | 70.0 ± .0 | .818 | .003 |
| Sweep (LPM) | 3.0 ± .6 | 1.5 ± .6 | 1.8 ± .3 | .001 | .177 | |
| Blood flow (L/min) | 5.4 ± .2 | 5.5 ± .3 | 5.2 ± .1 | .422 | .012 | |
| Ventilator settings | FiO2 (L/min) | 40 ± .0 | 40 ± .0 | 40 ± .0 | N/A | N/A |
| Minute ventilation (mL/min) | 5236 ± 1816 | 7600 ± 3670 | 3230 ± 736 | .167 | .016 | |
Group 1 = average values during first 50 hours of ECMO when pulse pressure was <16.5 mmHg; Group 2 = average values during first 50 hours of ECMO when pulse pressure was >16.5 mmHg; Group 3 = average values during Hours 51–100 of ECMO when pulse pressure was >16.5 mmHg.
*
p value < .05 when compared with right radial PaCO2 within the same group.
†
p value < .05 when compared with right radial PaO2 within the same group.