Table 2.
Vital data, respiratory data, and blood gas analysis
| t0 | t1 | t2 | |
|---|---|---|---|
| Body temperature, °C | 37.5 ± 0.5 | 37.5 ± 0.5 | 37.5 ± 0.6 |
| HR, beats/minute | 89.5 ± 24.9 | 92.3 ± 26.3 | 90.8 ± 25.6 |
| SAP, kPa | 18.7 ± 3.5 | 19.2 ± 3.3 | 18.9 ± 3.5 |
| MAP, kPa | 10.9 ± 1.7 | 11.2 ± 1.9 | 11.2 ± 2.1 |
| DAP, kPa | 8 ± 1.6 | 8 ± 1.8 | 8 ± 2.1 |
| Norepinephrine, μg/kg/minute | 0.06 ± 0.05 | 0.06 ± 0.05 | 0.06 ± 0.05 |
| SpO2, % | 98 ± 2 | 95 ± 3a,b | 97 ± 3 |
| FiO2 | 0.4 ± 0.05 | 0.4 ± 0.08c | 0.4 ± 0.05 |
| Pressure support, mbar | 9 ± 2.5 | NA | 9 ± 2 |
| PEEP, mbar | 7 ± 1 | NA | 7 ± 1 |
| Respiratory rate, breaths/minute | 23.5 ± 7 | 26 ± 6 | 24 ± 6 |
| RSBI, breaths/minute/L | 52.2 ± 20.7 | NA | 51.8 ± 22.4 |
| PaO2, kPa | 11.3 ± 2.3 | 9.5 ± 2.0a,b | 10.9 ± 2.4a |
| PaCO2, kPa | 5.2 ± 1.1 | 5.2 ± 1.2 | 5.1 ± 1.1 |
| pH | 7.456 ± 0.04 | 7.457 ± 0.04 | 7.461 ± 0.043 |
| HCO3 −, mmol/L | 27.7 ± 5 | 27.5 ± 5 | 27.3 ± 5 |
| Lactate, mmol/L | 0.9 ± 0.3 | 0.9 ± 0.4 | 0.9 ± 0.4 |
Abbreviations: HR Heart rate, SAP Systolic arterial pressure, MAP Mean arterial pressure, DAP Diastolic arterial pressure, SpO 2 Peripheral oxygen saturation, FiO 2 Fraction of inspired oxygen, PEEP Positive end-expiratory pressure, RSBI Rapid shallow breathing index (rate between respiratory rate and tidal volume), PaO 2 Partial pressure of arterial oxygen, PaCO 2 Partial pressure of arterial carbon dioxide, NA Not applicable, HCO 3 − Bicarbonate
Data are given as mean ± SD
a p < 0.05 vs t0
b p < 0.05 vs t2
c Calculated FiO2 after conversion of oxygen application