| SpO2 | Peripheral blood oxygen saturation |
| PI | Perfusion index |
| BMI | Body mass index |
| ISO | International Organization for Standardization |
| ANOVA | Analysis of variance |
| HSD | Honestly significant difference |
| ICU | Intensive care unit |
| RMSE | Root mean square error |
| FDA | Food and Drug Administration |
| SaO2 | Arterial oxygen saturation |
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