Results 51 to 60 of about 6,786 (191)

Respiratory effort from the photoplethysmogram

Medical Engineering & Physics, 2017
The potential for a simple, non-invasive measure of respiratory effort based on the pulse oximeter signal - the photoplethysmogram or 'pleth' - was investigated in a pilot study. Several parameters were developed based on a variety of manifestations of respiratory effort in the signal, including modulation changes in amplitude, baseline, frequency and ...
openaire   +2 more sources

Continuous 24-h Photoplethysmogram Monitoring Enables Detection of Atrial Fibrillation

Frontiers in Physiology, 2022
Aim: Atrial fibrillation (AF) detection is challenging because it is often asymptomatic and paroxysmal. We evaluated continuous photoplethysmogram (PPG) for signal quality and detection of AF.Methods: PPGs were recorded using a wrist-band device in 173 ...
Eemu-Samuli Väliaho, Eemu-Samuli Väliaho, Jukka A. Lipponen, Pekka Kuoppa, Tero J. Martikainen, Helena Jäntti, Tuomas T. Rissanen, Maaret Castrén, Maaret Castrén, Jari Halonen, Jari Halonen, Mika P. Tarvainen, Mika P. Tarvainen, Tiina M. Laitinen, Tomi P. Laitinen, Tomi P. Laitinen, Onni E. Santala, Onni E. Santala, Olli Rantula, Noora S. Naukkarinen, Juha E. K. Hartikainen, Juha E. K. Hartikainen   +21 more
doaj   +1 more source

Optimal Signal Quality Index for Photoplethysmogram Signals [PDF]

Bioengineering, 2016
A photoplethysmogram (PPG) is a noninvasive circulatory signal related to the pulsatile volume of blood in tissue and is typically collected by pulse oximeters. PPG signals collected via mobile devices are prone to artifacts that negatively impact measurement accuracy, which can lead to a significant number of misleading diagnoses.
openaire   +4 more sources

Assessing Cardiac Flow Measurements Using a Noninvasive Photoplethysmography-Based Device Compared to Invasive Pulmonary Artery Catheter

JACC: Advances
Background: Invasive monitoring is considered the gold standard for hemodynamic monitoring, yet it poses inherent risks. Objectives: The aim of the study was to compare invasive hemodynamic measurements using a noninvasive wearable photoplethysmography ...
Dean Nachman, MD, Arik Eisenkraft, MD, MHA, Eldad Rahamim, MD, Mahsati Ibrahimli, MD, Asen Asenov, MD, Nir Goldstein, PhD, Yotam Kolben, MD, Segev Huly, MD, Arik Ben Ishay, EMT-P, Meir Fons, MD, Michael Tabi, MD, Roei Merin, MD, Offer Amir, MD, Rabea Asleh, MD, PhD, MHA   +13 more
doaj   +1 more source

Towards Investigating Global Warming Impact on Human Health Using Derivatives of Photoplethysmogram Signals [PDF]

, 2015
Recent clinical studies show that the contour of the photoplethysmogram (PPG) wave contains valuable information for characterizing cardiovascular activity.
Abbott, Derek, Brearley, Matt, Elgendi, Mohamed, Fletcher, Richard R, Lovell, Nigel, Norton, Ian, Schuurmans, Dale   +6 more
core   +4 more sources

The Role of Ionic Liquids at the Biological Interfaces in Bioelectronics

Advanced Science, EarlyView.
Ionic liquids (ILs) are highlighted as key artificial ionic materials that bridge biological ion‐based signaling and electronic devices. By understanding their composition, structure, function relationships, and mechanisms, ILs can advance from high performance electrolyte to core materials enabling integrated, multifunctional bioelectronics for ...
Yeong‐sinn Ye, Young Jin Jo, Ji Yeon Oh, Ju Yeon Jeong, Lili Guo, Tae‐il Kim   +5 more
wiley   +1 more source

Selective Charge Extraction Allows Fast Photomultiplication and Imaging in Rigid and Ultra‐Flexible SWIR Organic Photodiodes

Advanced Energy Materials, EarlyView.
SWIR donor polymer TQ‐3T allows photomultiplication in OPD in 1:1 ratio with NFA Y6, achieving EQEs > 1100% at ‐10 V. Microseconds response times are retained, amongst the lowest for photomultiplication. As proof of concept, we demonstrate ultrathin and flexible PM‐OPDs based on our TQ‐3T:Y6 as a flexible pulse oximeter as well as a conformable image ...
Matilde Brunetta, Zhuoran Qiao, Davide Nodari, Kosei Sasaki, Francesco Furlan, Martina Rimmele, Hongki Kim, Hongting Chen, Yusaku Tagawa, Adam Marsh, Rushil Vasant, Sang Do, Xabier Rodríguez‐Martínez, Anirudh Sharma, Christos L. Chochos, Jaime Martin, Martin Heeney, Koen Vandewal, Derya Baran, Thuc‐Quyen Nguyen, Bob C. Schroeder, Takao Someya, Tomoyuki Yokota, Nicola Gasparini   +23 more
wiley   +1 more source

Predict Daily Life Stress based on Heart Rate Variability [PDF]

, 2020
Department of Human Factors EngineeringThe purpose of this study is to investigate the feasibility of predicting a daily mental stress level from analyzing Heart Rate Variability (HRV) by using a Photoplethysmography (PPG) sensor which is integrated in ...
Park, Jongwoo
core  

Wrist-Worn Devices for Remote Monitoring of Cardiovascular Disease: A Survey

IEEE Access
According to the World Health Organization, cardiovascular disease adversely impacts the quality of life, can lead to death and imposes a substantial burden on global healthcare systems.
Ismail Sadiq, Aneeqa Ijaz, Ali Imran
doaj   +1 more source

Data Fusion for Improved Respiration Rate Estimation [PDF]

, 2010
We present an application of a modified Kalman-Filter (KF) framework for data fusion to the estimation of respiratory rate from multiple physiological sources which is robust to background noise.
Atul Malhotra, GariD Clifford, Shamim Nemati   +2 more
core   +1 more source