Agreement Between Sleep and Respiratory Measures From a Wearable Oximetry Ring and Simultaneous Complete Polysomnography
Notice bibliographique
Résumé
Abstract Rationale: Wearable technology offers the potential for low-cost, accessible monitoring for sleep disorders. However, data validating the accuracy of measurements is often limited or non-existent, limiting clinical utility. The Circul+ ring (BodiMetrics, Inc) incorporates a reflectance oximeter and accelerometer which yield measures of sleep-wake state and oxygenation via proprietary software. Limited data validating the oximetry measurements, but no data on the sleep-wake analysis, have been published. Our aim was to evaluate the accuracy of Circul+ sleep-wake and oximetry data compared with simultaneously recorded in-laboratory complete polysomnography (PSG). Methods: We studied 15 patients (6 males) of mean (± SD) age 50.4±15.2, BMI 34.4±8.6 undergoing PSG for obstructive sleep apnea (OSA). Prior to lights out, the ring was installed, with bluetooth connection to a bedside tablet running Circul+ acquisition/analysis application (version 1.0.163). PSG (Nihon-Kohden PSG 1100, Polysmith version 10) was scored manually using AASM v3.0 (1A hypopnea) criteria. Epoch-by-epoch matched comparisons of sleep-wake staging were made between Circul+ vs PSG data. Stages N1 and N2 from PSG were combined for comparison to Circul+ “Light sleep”. Values for 3% Oxygen Desaturation Index (ODI3) and ODI4, mean SpO2, nadir SpO2, and time below 90% saturation (T90%) were also compared. Results: Concordance between PSG and Circul+ sleep-wake staging is shown in the Table. Circul+ achieved only modest accuracy across sleep-wake stages compared to PSG. Notably, there was only 44% concordance for PSG wakefulness and a greater proportion of PSG REM epochs were identified as Light Sleep rather than REM by Circul+. Median AHI from PSG was 29.0 [12.5-37.9] events/h. There were no significant differences (Mann-Whitney U) between PSG and Circul+ for ODI3 (median [IQR] PSG = 9.1/h [3.0-32.6], Circul 13.7/h [5.3-32.5], p=0.87), ODI4 (PSG 4.0/h [1.1-22.1], Circul 9.8/h [2.2-18.2], p=0.80), Nadir SpO2 (p=0.76), or T90% (p=0.77). However, mean SpO2 was significantly lower for PSG (94.0%[93.0-95.0%]) than Circul+ (96.2%[95.4-97.8%]), p=0.004. Spearman correlations for Circul+ vs PSG oximetry measures were moderate to strong. Bland-Altman analysis for ODI3 revealed a mean PSG-Circul+ difference of 0.2/h (+/-1.96 SD: 41.0, -40.7) and for ODI4 2.7/h (35.3, -30.0). Conclusion: The version of the Circul+ ring/software evaluated in this study does not provide reliable sleep-wake staging. Conceivably, modifications to signal acquisition and/or processing by the manufacturer could improve this, but this remains to be demonstrated. The findings for Circul+ oximetry measures suggest this device could prove useful in OSA screening and assessment of treatment responses.Supported by: MUHC Foundation and RI-MUHC
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Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,002 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,003 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».