ICU sedation, delirium & recovery
Wearable device for prevention of postoperative and post‐discharge hypoxemia: A randomized pilot trial
Primary result · In-hospital TWA SpO2 <90%Result — go to the resultMedian difference −0.1 % 95% CI −0.4 to 0Authors' conclusion
Patients randomized to active Oxalert systems experienced half as many postoperative desaturation events while hospitalized, although the difference was not statistically significant in this small pilot trial. In contrast, the Oxalert system did not reduce post-discharge desaturation.
Study context
- Population
- Noncardiac surgical patients, monitored in hospital up to 6 days and 24 h after discharge
- Participants
- 49 patients
- Comparison
- Oxalert Enhanced Pulse Oximeter (EPO) with patient alerts vs without patient alerts
- Monitor + Alertn = 25
- Monitor Onlyn = 24reference
- Primary endpoint
- Time-weighted average (TWA) SpO2 <90% (%) and area under SpO2 <90% (% * min), in-hospital and after discharge
Methodological detailspilot, preplanned
- Pilot
- Preplanned
Primary result
In-hospital TWA SpO2 <90%
Median difference
−0.1 %
95% CI −0.4 to 0
P = 0.120
By group
Monitor + Alert vs Monitor Only
median difference −0.1 % (95% CI −0.4 to 0); P = 0.120
As reported in the abstract
Further findings
Median, % * min
| Outcome | Monitor + Alert | Monitor Only | Median difference (% * min) (95% CI) | P value | |
|---|---|---|---|---|---|
| In-hospital AUC SpO2 <90% | 635 (IQR 204–1513) | 1260 (IQR 117–5278) | −407 (−1816 to 208) | P = 0.349 | |
| −2000−100001000Difference, % * min (linear scale) |
Post-discharge desaturation (SpO2 <90%)
- Post-discharge estimated median difference
- −0.1 (−0.2, 0) %, p = .307 (95% CI)
- Oxalert system did not reduce post-discharge desaturation
Safety
Tolerability
- Oxalert system well tolerated in both groups
Original publication
Wearable device for prevention of postoperative and post‐discharge hypoxemia: A randomized pilot trial. Acta Anaesthesiol Scand. Published 13 January 2023. doi:10.
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