Physiological measurements during study period
| Variable | Washout incubator care | Control incubator care | Transfer to SSC | Washout SSC | Intervention SSC | Transfer to incubator | Washout incubator care | Postintervention incubator care |
|---|---|---|---|---|---|---|---|---|
| rcO2 (%)* | 74.9 (6.1) | 74.7 (6.1) | 71.6 (7.9) | 73.8 (7.6) | 74.9 (6.5) | 72.2 (6.9) | 74.2 (6.7) | 73.7 (6.9) |
| SpO2 (%)* | 94.6 (3.1) | 94.1 (3.0) | 91.0 (5.7) | 93.3 (3.0) | 93.6 (2.8) | 91.8 (3.9) | 94.8 (3.1) | 94.1 (2.9) |
| cFTOE (%)* | 0.2 (0.1) | 0.2 (0.1) | 0.2 (0.1) | 0.2 (0.1) | 0.2 (0.1) | 0.2 (0.1) | 0.2 (0.1) | 0.2 (0.1) |
| HR (bpm)* | 157.8 (11.0) | 160.4 (11.0) | 168.6 (11.8) | 160.0 (11.1) | 160.8 (12.4) | 169.7 (11.2) | 161.9 (13.8) | 162.3 (11.6) |
| FiO2 (%)† | 22.1 (21.4 to 28.1) | 22.8 (21.4 to 27.5) | 22.5 (21.4 to 32.5) | 22.7 (21.5 to 26.7) | 24.2 (21.4 to 26.6) | 23.9 (21.4 to 31.6) | 21.9 (21.4 to 26.8) | 21.9 (21.4 to 27.2) |
*Mean (SD).
†Median (IQR).
cFTOE, cerebral fractional tissue oxygen extraction; FiO2, fraction of inspired oxygen; HR, heart rate; rcO2, regional cerebral oxygenation; SpO2, oxygen saturations; SSC, skin-to-skin care.