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Sleep apnea (SA) is a chronic sleep-related disorder consisting of repetitive pauses or restrictions in airflow during sleep and is known to be a risk factor for cerebro- and cardiovascular disease. It is generally diagnosed using…

The estimation and monitoring of SpO2 are crucial for assessing lung function and treating chronic pulmonary diseases. The COVID-19 pandemic has highlighted the importance of early detection of changes in SpO2, particularly in asymptomatic…

Computer Vision and Pattern Recognition · Computer Science 2023-05-01 Rohit Sharma , Abhinav Gupta , Arnav Gupta , Bo Li

Blood oxygen saturation (SpO2) is a vital marker for healthcare monitoring. Traditional SpO2 estimation methods often rely on complex clinical calibration, making them unsuitable for low-power, wearable applications. In this paper, we…

Signal Processing · Electrical Eng. & Systems 2026-01-12 Zequan Liang , Ruoyu Zhang , Wei Shao , krishna Karthik , Ehsan Kourkchi , Setareh Rafatirad , Houman Homayoun

Accurate and real-time monitoring of saturated oxygen level of the blood is an important clinical issue gaining great attention in recent years and during COVID 19 pandemic. Monitoring the patients` ventilation and respiration dynamic is…

Signal Processing · Electrical Eng. & Systems 2024-09-20 Hosna Ghandeharioun , Ali Akbari

Algorithmic bias in healthcare mirrors existing data biases. However, the factors driving unfairness are not always known. Medical devices capture significant amounts of data but are prone to errors; for instance, pulse oximeters…

Machine Learning · Computer Science 2024-08-09 Inês Martins , João Matos , Tiago Gonçalves , Leo A. Celi , A. Ian Wong , Jaime S. Cardoso

Significance: Pulsatile blood Oxygen Saturation (SpO2 ) via pulse oximetry is a valuable clinical metric for assessing oxygen delivery. Individual anatomical features, including skin tone, may affect current optical pulse oximetry methods.…

Medical Physics · Physics 2024-10-23 Giles Blaney , Jodee Frias , Fatemeh Tavakoli , Angelo Sassaroli , Sergio Fantini

Peripheral blood oxygen saturation Sp02 is a vital measure in healthcare. Modern off-the-shelf wrist-worn devices, such as the Apple Watch, FitBit, and Samsung Gear, have an onboard sensor called a pulse oximeter. While pulse oximeters are…

Computers and Society · Computer Science 2019-06-19 Caleb Phillips , Daniyal Liaqat , Moshe Gabel , Eyal de Lara

Oscillometric monitors are the most common automated blood pressure (BP) measurement devices used in non-specialist settings. However, their accuracy and reliability vary under different settings and for different age groups and health…

Signal Processing · Electrical Eng. & Systems 2023-01-25 Niloufar Delfan , Mohamad Forouzanfar

Hypoxemia, a medical condition that occurs when the blood is not carrying enough oxygen to adequately supply the tissues, is a leading indicator for dangerous complications of respiratory diseases like asthma, COPD, and COVID-19. While…

Machine Learning · Computer Science 2021-04-02 Jason S. Hoffman , Varun Viswanath , Xinyi Ding , Matthew J. Thompson , Eric C. Larson , Shwetak N. Patel , Edward Wang

Blood oxygen saturation (SpO2) is a crucial vital sign routinely monitored in medical settings. Traditional methods require dedicated contact sensors, limiting accessibility and comfort. This study presents a deep learning framework for…

Computational Engineering, Finance, and Science · Computer Science 2025-03-04 Jiankai Tang , Xin Liu , Daniel McDuff , Zhang Jiang , Hongming Hu , Luxi Zhou , Nodoka Nagao , Haruta Suzuki , Yuki Nagahama , Wei Li , Linhong Ji , Yuanchun Shi , Izumi Nishidate , Yuntao Wang

Blood oxygen saturation (SpO$_2$) is an important indicator for pulmonary and respiratory functionalities. Clinical findings on COVID-19 show that many patients had dangerously low blood oxygen levels not long before conditions worsened. It…

Signal Processing · Electrical Eng. & Systems 2025-02-04 Xin Tian , Chau-Wai Wong , Sushant M. Ranadive , Min Wu

Blood oxygen saturation (SpO$_2$) is an essential indicator of respiratory functionality and is receiving increasing attention during the COVID-19 pandemic. Clinical findings show that it is possible for COVID-19 patients to have…

Machine Learning · Computer Science 2025-02-04 Joshua Mathew , Xin Tian , Min Wu , Chau-Wai Wong

Non-invasive ambulatory estimation of blood oxygen saturation has emerged as an important clinical requirement to detect hypoxemia in the delayed post-infective phase of COVID-19, where dangerous hypoxia may occur in the absence of…

Signal Processing · Electrical Eng. & Systems 2021-09-15 Harry J. Davies , Ian Williams , Nicholas S. Peters , Danilo P. Mandic

With the advancement of technologies, market wearables are becoming increasingly popular with a range of services, including providing access to bank accounts, accessing cars, monitoring patients remotely, among several others. However,…

Human-Computer Interaction · Computer Science 2021-10-12 Alexa Muratyan , William Cheung , Sayanton V. Dibbo , Sudip Vhaduri

Oscillometry is the standard method for non-invasive, cuff-based blood pressure (BP) measurement, but it introduces systematic errors that may impact clinical accuracy. This study investigates the sources of these errors--primarily the…

Signal Processing · Electrical Eng. & Systems 2025-08-22 Masoud Nateghi , Reza Sameni

Diffuse optics has the potential to offer a substantial advancement in fetal health monitoring via enabling continuous measurement of fetal blood oxygen saturation (fSpO$_2$). Aiming to enhance the sensing accuracy and to elucidate the…

Image and Video Processing · Electrical Eng. & Systems 2025-09-29 Weitai Qian , Rishad Raiyan Joarder , Randall Fowler , Begum Kasap , Mahya Saffarpour , Kourosh Vali , Tailai Lihe , Aijun Wang , Diana Farmer , Soheil Ghiasi

The general public and medical professionals recognized the importance of accurately measuring and storing blood oxygen levels and heart rate during the COVID-19 pandemic. The demand for accurate contact-less devices was motivated by the…

Medical Physics · Physics 2022-04-19 Zhuang Hou , Xiaolei Cao

We contrast high effectiveness of state of the art deep learning architectures designed for general audio classification tasks, refined for respiratory insufficiency (RI) detection and blood oxygen saturation (SpO$_2$) estimation and…

Photoplethysmogram (PPG) signal-based blood pressure (BP) estimation is a promising candidate for modern BP measurements, as PPG signals can be easily obtained from wearable devices in a non-invasive manner, allowing quick BP measurement.…

Signal Processing · Electrical Eng. & Systems 2021-03-01 Hyeongju Kim , Woo Hyun Kang , Hyeonseung Lee , Nam Soo Kim

Peripheral blood oxygen saturation (SpO2), an indicator of oxygen levels in the blood, is one of the most important physiological parameters. Although SpO2 is usually measured using a pulse oximeter, non-contact SpO2 estimation methods from…

Image and Video Processing · Electrical Eng. & Systems 2023-05-16 Yusuke Akamatsu , Yoshifumi Onishi , Hitoshi Imaoka
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