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Erschienen in: Sleep and Breathing 3/2022

23.09.2021 | Sleep Breathing Physiology and Disorders • Original Article

A novel, simple, and accurate pulse oximetry indicator for screening adult obstructive sleep apnea

verfasst von: Carlos Alberto Nigro, Gonzalo Castaño, Ignacio Bledel, Alfredo Colombi, María Cecilia Zicari

Erschienen in: Sleep and Breathing | Ausgabe 3/2022

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Abstract

Objective

The objective of the study was to develop a multiparametric oximetry indicator (IMp-SpO2) to diagnose obstructive sleep apnea in adults.

Material and method

This was an observational, retrospective study of diagnostic accuracy. We included adults who had had a diagnostic polysomnography with few artifacts and a total sleep time of at least 180 min in the sleep laboratory. Obstructive sleep apnea (OSA) was defined as an apnea-hypopnea index (AHI) ≥ 5. The database was randomly divided into an experimental (Exp-G) and validation (Val-G) group. The program calculated several parameters of oxygen saturation variability (Par-VarSpO2): (a) oxygen desaturation index (ODI ≥ 3, 4%) and (b) 90, 95, and 97.5 percentiles of both the number of oxygen desaturations ≥ 3 and 4% (P90–97.5 OD3/4 W5-60) and SpO2 standard deviations in moving windows from 5 to 60 min (P90–P97.5 SDSpO2 W5-10). Area under the ROC curve (AUC-ROC), sensitivity, specificity, positive/negative likelihood ratios, and accuracy were calculated.

Results

Of 1141 adults included in the study, experimental (571) and validation group (570) were similar (women 47% vs 45%, BMI 27.5 kg/m2 vs 27.2 kg/m2, and AHI 11.7 vs 12, p NS). The IMp-SpO2 developed in the experimental group consisted of a combination of 10 parameters of oxygen saturation variability. The presence of at least one IMp-SpO2 variable had a high diagnostic performance for OSA (sensitivity/specificity/accuracy: Exp-G: 92.8/94/93.2%; Val-G: 93/95.2/93.7%). The IMp-SpO2 AUC-ROC was higher (Exp-G 0.934, Val-G 0.941) than most of the Par-VarSpO2 (0.898–0.929, p < 0.05).

Conclusion

The IMp-SpO2 showed a > 90% accuracy for OSA diagnosis in adults.
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Metadaten
Titel
A novel, simple, and accurate pulse oximetry indicator for screening adult obstructive sleep apnea
verfasst von
Carlos Alberto Nigro
Gonzalo Castaño
Ignacio Bledel
Alfredo Colombi
María Cecilia Zicari
Publikationsdatum
23.09.2021
Verlag
Springer International Publishing
Erschienen in
Sleep and Breathing / Ausgabe 3/2022
Print ISSN: 1520-9512
Elektronische ISSN: 1522-1709
DOI
https://doi.org/10.1007/s11325-021-02439-4

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