Pediatric anesthesia & critical care
Early warning for SpO2 decrease by the oxygen reserve index in neonates and small infants
Authors' conclusion
The ORI provided an early warning time for detecting an impending SpO2 decrease in small infants and neonates in the defined interval in this study.
Study context
- Population
- Neonates and small infants aged <2 years under GA
- Participants
- 100 neonates
- Outcome
- Warning time and sensitivity of ORI alarms for detecting impending SpO2 decrease
Performance
As reported in the abstract
Impending SpO2 decrease, entire duration of anesthesia
| Test or model | Value | Sensitivity | PPV |
|---|---|---|---|
| Preset oxygen reserve index (ORI) alarm | warning time 84 (IQR 56–102) s | 55% (95% CI 52%-58%) | 18% (95% CI 17%-20%) |
Preset oxygen reserve index (ORI) alarm
Valuewarning time 84 (IQR 56–102) s
Sensitivity55% (95% CI 52%-58%)
PPV18% (95% CI 17%-20%)
Further findings
| Outcome | Values |
|---|---|
| Impending SpO2 decrease, during anesthesia induction | Preset ORI alarm warning time 63 (IQR 40–82) s · sensitivity 56% (44%-68%) · PPV 27% (95% CI 21%-35%) |
Agreement of PaO2 intervals with ORI intervals (54 blood gas analyses)
- Poor agreement, kappa
- 0.00 (95% CI = [−0.18; 0.18])
- Weight correlated with correct classification of PaO2 interval by ORI interval
- P = 0.0129
- Height correlated with correct classification of PaO2 interval by ORI interval
- P = 0.0376
Original publication
Early warning for SpO2 decrease by the oxygen reserve index in neonates and small infants. Paediatr Anaesth. Published 8 August 2023. doi:10.
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