| ANOVA | Analysis of variance |
| CO | Cardiac output |
| CPAP | Continuous positive airway pressure |
| c-rSO2 | Cerebral regional oxygenation |
| EC | Electrical Cardiometry |
| ETS | Endotracheal suction |
| HFNC | High-flow nasal cannula |
| HR | Heart rate |
| Hz | Hertz |
| MV | Mechanical ventilation |
| NIRS | Near-Infrared Spectroscopy |
| SIMV | Synchronized intermittent mandatory ventilation |
| SpO2 | Peripheral oxygen saturation |
| SQI | Signal quality index |
| SV | Stroke volume |
| T1–3 | Timepoints 1–3 (before, during, and after ETS) |
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