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A portable wireless device based on oximetry for sleep apnea detection

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Abstract

Obstructive sleep apnea is a highly prevalent sleep related breathing disorder and polysomnography is the gold standard exam for diagnosis. Despite providing results with high accuracy this multi-parametric test is expensive, time consuming and does not fit with the new tendency in health care that is changing the focus to prevention and wellness. Home health care is seen as a possible way to address this problematic by using minimal invasive devices, providing low cost of diagnosis and higher accessibility. To address this, a portable and automated sleep apnea detector was designed and evaluated. The device uses one SpO2 sensor and the analysis is based on the connection between oxygen saturation and apnea events. The measured signals are received in a field-programmable gate array that checks for errors and implements the communication protocols of two wireless transmitters. Two solutions were implemented for processing the data: one based on a smartphone (due to availability and low cost) and another based on a personal computer (for a higher computation capability). The algorithms were implemented in Java, for the smartphone, and in Python, for the computer. Both implementations have a graphical user interface to simplify the device operation. The algorithms were tested using a database consisting of 70 patients with the SpO2 signal collected in a Hospital. The algorithm performance achieved an average accuracy, sensitivity and specificity of 87.5, 79.5 and 90.8% respectively.

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Acknowledgements

Acknowledgments to the Portuguese Foundation for Science and Technology for their support through Projeto Estratégico LA 9–UID/EEA/50009/2013. Acknowledgement to ARDITI–Agência Regional para o Desenvolvimento da Investigação, Tecnologia e Inovação under the scope of the Project M1420-09-5369-FSE-000001–PhD Studentship.

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Authors and Affiliations

  1. Universidade de Lisboa, Instituto Superior Técnico, Lisboa, Portugal

    Fábio Mendonça & Sheikh Shanawaz Mostafa

  2. Madeira Interactive Technologies Institute, Funchal, Portugal

    Fábio Mendonça, Sheikh Shanawaz Mostafa & Fernando Morgado-Dias

  3. Universidade da Madeira, Funchal, Portugal

    Fernando Morgado-Dias

  4. Institute for Technological Development and Innovation in Communications, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain

    Juan L. Navarro-Mesa & Antonio G. Ravelo-García

  5. Pulmonary Medicine Department, Hospital Universitario de Gran Canaria Dr. Negrín, Las Palmas de Gran Canaria, Spain

    Gabriel Juliá-Serdá

Authors
  1. Fábio Mendonça
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  2. Sheikh Shanawaz Mostafa
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  3. Fernando Morgado-Dias
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  4. Juan L. Navarro-Mesa
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  5. Gabriel Juliá-Serdá
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  6. Antonio G. Ravelo-García
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Correspondence to Fábio Mendonça.

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Mendonça, F., Mostafa, S.S., Morgado-Dias, F. et al. A portable wireless device based on oximetry for sleep apnea detection. Computing 100, 1203–1219 (2018). https://doi.org/10.1007/s00607-018-0624-7

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  • DOI: https://doi.org/10.1007/s00607-018-0624-7

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