A photoplethysmography (PPG) sensor is a cost-effective and efficacious way of measuring health conditions such as heart rate, oxygen saturation, and respiration rate. In this work, we present a hybrid PPG sensor system working in a reflective mode with an optoelectronic module, i.e., the combination of an inorganic light-emitting diode (LED) and a circular-shaped organic photodetector (OPD) surrounding the LED for efficient light harvest followed by the proper driving circuit for accurate PPG signal acquisition. The performance of the hybrid sensor system was confirmed by the heart rate detection process from the PPG using fast Fourier transform analysis. The PPG signal obtained with a 50% LED duty cycle and 250 Hz sampling rate resulted in accurate heart rate monitoring with an acceptable range of error. The effects of the LED duty cycle and the LED luminous intensity were found to be crucial to the heart rate accuracy and to the power consumption, i.e., indispensable factors for the hybrid sensor.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11644845 | PMC |
| http://dx.doi.org/10.3390/s24237634 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Old and New Biomarkers in Idiopathic Recurrent Acute Pericarditis (IRAP): Prognosis and Outcomes.
Curr Cardiol Rep
January 2025
Division of Internal Medicine, Fatebenefratelli Hospital, ASST Fatebenefratelli Sacco, University of Milan, Piazzale Principessa Clotilde, 3, Milan, 20121, Italy.
Purpose Of Review: To outline the latest discoveries regarding the utility and reliability of serum biomarkers in idiopathic recurrent acute pericarditis (IRAP), considering recent findings on its pathogenesis. The study highlights the predictive role of these biomarkers in potential short- (cardiac tamponade, recurrences) and long-term complications (constrictive pericarditis, death).
Recent Findings: The pathogenesis of pericarditis has been better defined in recent years, focusing on the autoinflammatory pathway.
Cardiovascular Outcomes With Antidiabetic Drugs in People With Type 2 Diabetes and a Prior Stroke.
Mayo Clin Proc
January 2025
Department of Internal Medicine, Korea University Anam Hospital, Seoul, Republic of Korea; Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea. Electronic address:
Objective: To assess the comparative effectiveness of sodium-glucose cotransporter 2 inhibitors (SGLT2i), thiazolidinediones (TZD), and dipeptidyl peptidase-4 inhibitors (DPP-4i) for the cardiorenal outcomes and mortality in individuals with type 2 diabetes and a prior stroke.
Patients And Methods: Using the Korean National Health Insurance Service database from 2014 to 2021, a new-user cohort was established through propensity score matching for SGLT2i, TZD, and DPP-4i. The primary outcomes were major adverse cardiovascular events (MACE), comprising myocardial infarction, ischemic stroke, and cardiovascular death.
Surgical and Ablation Therapies for Atrial Appendage Tachycardia in Children.
JACC Clin Electrophysiol
December 2024
Department of Pediatric Cardiology, Heart Center, First Hospital of Tsinghua University (Beijing Huaxin Hospital), Chaoyang District, Beijing, China.
Background: Atrial tachycardia (AT) originate from the atrial appendage present unique clinical challenges in pediatrics. It is typically persistent, frequently leading to tachycardiomyopathy, and poses significant treatment difficulties.
Objectives: This study aimed to collate and analyze the clinical characteristics and therapeutic outcomes of radiofrequency ablation (RFCA) and with atrial appendage resection for the treatment of AT originating from the atrial appendages in pediatric patients.
Subclavian Ansae Stimulation on Cardiac Hemodynamics and Electrophysiology in Atrial Fibrillation: A Target for Sympathetic Neuromodulation.
JACC Clin Electrophysiol
December 2024
St Bartholomew's Hospital, Barts Health NHS Trust, London, United Kingdom; William Harvey Research Institute, Queen Mary University of London, London, United Kingdom. Electronic address:
Background: The sympathetic autonomic nervous system plays a major role in arrhythmia development and maintenance. Historical preclinical studies describe preferential increases in cardiac sympathetic tone upon selective stimulation of the subclavian ansae (SA), a nerve cord encircling the subclavian artery.
Objectives: This study sought to define, for the first time, the functional anatomy and physiology of the SA in humans using a percutaneous approach.
The PERFORMANCE II Trial: A Prospective Multicenter Investigation of a Novel Carotid Stent System.
JACC Cardiovasc Interv
December 2024
Department for Angiology, Brandenburg Medical School Theodor Fontane, Campus Clinic Brandenburg, Center for Internal Medicine I, Berlin, Germany; Department of Angiology, Sankt-Gertrauden-Krankenhaus, Berlin, Germany.
Background: Several randomized clinical trials have shown that the composite endpoint of death, stroke, and myocardial infarction (MI) is equivalent between carotid artery stenting and carotid endarterectomy. However, the risk of minor stroke has been consistently higher with carotid artery stenting.
Objectives: The authors sought to evaluate the safety and effectiveness of a novel carotid stent system comprised of a stent, an adjustable integrated embolic filter and a postdilation balloon, in patients at elevated risk for adverse events from carotid endarterectomy.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!