| UCP | umbilical cord pulse oximetry |
| SpO2 | preductal saturations |
| SaO2 | arterial saturations |
| U SpO2 | umbilical saturations |
| C HR | carotid heart rate |
| U HR | umbilical heart rate |
| CA | carotid artery |
| UV | umbilical vein |
| UA | umbilical artery |
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