Paloma Rodrigues Rocha , Diego Munduruca Domingues , Sara Quaglia de Campos Giampá , João Pedro Walsh Crema , Filipe Soares , Pedro Rodrigues Genta , David Gozal , Geraldo Lorenzi-Filho
{"title":"血氧仪分辨率对阻塞性睡眠呼吸暂停患者血红蛋白去饱和事件和缺氧负担检测的影响。","authors":"Paloma Rodrigues Rocha , Diego Munduruca Domingues , Sara Quaglia de Campos Giampá , João Pedro Walsh Crema , Filipe Soares , Pedro Rodrigues Genta , David Gozal , Geraldo Lorenzi-Filho","doi":"10.1016/j.sleep.2025.106814","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><div>Oxyhemoglobin desaturation events (ODE) are major contributors to the detection and classification of obstructive sleep apnea (OSA). However, variations in pulse oximetry resolution may affect ODE detection and, consequently, the oxyhemoglobin desaturation index (ODI) and the hypoxic burden (HB). We hypothesized that traditional low-resolution pulse oximetry (TRPO, 1 %), which is designed to round up decimal points in the readout, compared to high-resolution pulse oximetry (HRPO, 0.1 %), impacts on ODI and HB.</div></div><div><h3>Methods</h3><div>Consecutive deidentified diagnostic sleep studies of patients with suspected OSA, recorded between February and June 2023, were extracted from the Biologix database and analysed. HRPO data from the Biologix oximeter was compared with mathematically generated TRPO data. ODI and HB differences between HRPO and TRPO were compared using oxyhemoglobin desaturation criteria of 3 % and 4 %. Effect sizes were assessed using Cohen's d. Confusion matrices, Bland-Altman plots and Cohen's Kappa were used to assess the agreement on ODI measurements between HRPO and TRPO.</div></div><div><h3>Results</h3><div>A total of 9551 diagnostic sleep studies were analysed. Compared to the HRPO, the TRPO significantly overestimated ODI and HB for the 3 % desaturation criterion: ODI3 %: 14.3 [6.9–25.3] vs. 21.1 [12.0–34.0] events/h; HB3 %: 23.5 [10.2–46.1] vs. 33.2 [17.8–57.1] % min/h; as well as the 4 % desaturation criterion (p < 0.0001 for all comparisons). Overestimation of ODI and HB was amplified among patients with no or mild forms of OSA.</div></div><div><h3>Conclusion</h3><div>TRPO overestimates the ODI due to the rounding effect, leading to overestimation of OSA diagnosis, OSA severity and HB determination.</div></div>","PeriodicalId":21874,"journal":{"name":"Sleep medicine","volume":"136 ","pages":"Article 106814"},"PeriodicalIF":3.4000,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Impact of oximetry resolution on detection of oxyhemoglobin desaturation events and hypoxic burden in patients with obstructive sleep apnea\",\"authors\":\"Paloma Rodrigues Rocha , Diego Munduruca Domingues , Sara Quaglia de Campos Giampá , João Pedro Walsh Crema , Filipe Soares , Pedro Rodrigues Genta , David Gozal , Geraldo Lorenzi-Filho\",\"doi\":\"10.1016/j.sleep.2025.106814\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Background</h3><div>Oxyhemoglobin desaturation events (ODE) are major contributors to the detection and classification of obstructive sleep apnea (OSA). However, variations in pulse oximetry resolution may affect ODE detection and, consequently, the oxyhemoglobin desaturation index (ODI) and the hypoxic burden (HB). We hypothesized that traditional low-resolution pulse oximetry (TRPO, 1 %), which is designed to round up decimal points in the readout, compared to high-resolution pulse oximetry (HRPO, 0.1 %), impacts on ODI and HB.</div></div><div><h3>Methods</h3><div>Consecutive deidentified diagnostic sleep studies of patients with suspected OSA, recorded between February and June 2023, were extracted from the Biologix database and analysed. HRPO data from the Biologix oximeter was compared with mathematically generated TRPO data. ODI and HB differences between HRPO and TRPO were compared using oxyhemoglobin desaturation criteria of 3 % and 4 %. Effect sizes were assessed using Cohen's d. Confusion matrices, Bland-Altman plots and Cohen's Kappa were used to assess the agreement on ODI measurements between HRPO and TRPO.</div></div><div><h3>Results</h3><div>A total of 9551 diagnostic sleep studies were analysed. Compared to the HRPO, the TRPO significantly overestimated ODI and HB for the 3 % desaturation criterion: ODI3 %: 14.3 [6.9–25.3] vs. 21.1 [12.0–34.0] events/h; HB3 %: 23.5 [10.2–46.1] vs. 33.2 [17.8–57.1] % min/h; as well as the 4 % desaturation criterion (p < 0.0001 for all comparisons). Overestimation of ODI and HB was amplified among patients with no or mild forms of OSA.</div></div><div><h3>Conclusion</h3><div>TRPO overestimates the ODI due to the rounding effect, leading to overestimation of OSA diagnosis, OSA severity and HB determination.</div></div>\",\"PeriodicalId\":21874,\"journal\":{\"name\":\"Sleep medicine\",\"volume\":\"136 \",\"pages\":\"Article 106814\"},\"PeriodicalIF\":3.4000,\"publicationDate\":\"2025-09-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Sleep medicine\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1389945725004897\",\"RegionNum\":2,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CLINICAL NEUROLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sleep medicine","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1389945725004897","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CLINICAL NEUROLOGY","Score":null,"Total":0}
Impact of oximetry resolution on detection of oxyhemoglobin desaturation events and hypoxic burden in patients with obstructive sleep apnea
Background
Oxyhemoglobin desaturation events (ODE) are major contributors to the detection and classification of obstructive sleep apnea (OSA). However, variations in pulse oximetry resolution may affect ODE detection and, consequently, the oxyhemoglobin desaturation index (ODI) and the hypoxic burden (HB). We hypothesized that traditional low-resolution pulse oximetry (TRPO, 1 %), which is designed to round up decimal points in the readout, compared to high-resolution pulse oximetry (HRPO, 0.1 %), impacts on ODI and HB.
Methods
Consecutive deidentified diagnostic sleep studies of patients with suspected OSA, recorded between February and June 2023, were extracted from the Biologix database and analysed. HRPO data from the Biologix oximeter was compared with mathematically generated TRPO data. ODI and HB differences between HRPO and TRPO were compared using oxyhemoglobin desaturation criteria of 3 % and 4 %. Effect sizes were assessed using Cohen's d. Confusion matrices, Bland-Altman plots and Cohen's Kappa were used to assess the agreement on ODI measurements between HRPO and TRPO.
Results
A total of 9551 diagnostic sleep studies were analysed. Compared to the HRPO, the TRPO significantly overestimated ODI and HB for the 3 % desaturation criterion: ODI3 %: 14.3 [6.9–25.3] vs. 21.1 [12.0–34.0] events/h; HB3 %: 23.5 [10.2–46.1] vs. 33.2 [17.8–57.1] % min/h; as well as the 4 % desaturation criterion (p < 0.0001 for all comparisons). Overestimation of ODI and HB was amplified among patients with no or mild forms of OSA.
Conclusion
TRPO overestimates the ODI due to the rounding effect, leading to overestimation of OSA diagnosis, OSA severity and HB determination.
期刊介绍:
Sleep Medicine aims to be a journal no one involved in clinical sleep medicine can do without.
A journal primarily focussing on the human aspects of sleep, integrating the various disciplines that are involved in sleep medicine: neurology, clinical neurophysiology, internal medicine (particularly pulmonology and cardiology), psychology, psychiatry, sleep technology, pediatrics, neurosurgery, otorhinolaryngology, and dentistry.
The journal publishes the following types of articles: Reviews (also intended as a way to bridge the gap between basic sleep research and clinical relevance); Original Research Articles; Full-length articles; Brief communications; Controversies; Case reports; Letters to the Editor; Journal search and commentaries; Book reviews; Meeting announcements; Listing of relevant organisations plus web sites.