Results 31 to 40 of about 4,365 (229)

Low‐Intensity Sensitive and High Stability Flexible Heart Sound Sensor Enabled by Hybrid Near‐Field/Far‐Field Electrospinning

open access: yesAdvanced Functional Materials, Volume 33, Issue 29, July 18, 2023., 2023
A hybrid near‐field/far‐field electrospinning approach is defined to achieve low‐cost fabrication and optimization of triboelectric heterostructures for heart sound sensing. The new near‐field patterned polyurethane grid spacers promote vibration enhancement and charge trapping, demonstrating record high sensitivity of 7027 mV Pa−1 and low detection ...
Yihao Li, Yan Huang, Ni Zhao
wiley   +1 more source

Association of plasma bone morphogenetic protein‐4 levels with arterial stiffness in hypertensive patients

open access: yesJournal of Clinical Laboratory Analysis, Volume 36, Issue 11, November 2022., 2022
Arterial stiffness can interact with hypertension, thereby becoming an early marker of hypertension‐mediated targeted organ damage. Plasma levels of BMP‐4 have the ability to identify increased arterial stiffness in patients with hypertension. CAVI, cardio‐ankle vascular index; BMP‐4, bone morphogenetic protein‐4. Abstract Background Arterial stiffness
Ning Wang   +11 more
wiley   +1 more source

A phonocardiographic-based fiber-optic sensor and adaptive filtering system for noninvasive continuous fetal heart rate monitoring [PDF]

open access: yes, 2017
This paper focuses on the design, realization, and verification of a novel phonocardiographic-based fiber-optic sensor and adaptive signal processing system for noninvasive continuous fetal heart rate (fHR) monitoring.
Bilík, Petr   +8 more
core   +2 more sources

PRACTICAL IMPLEMENTATION OF IMPEDANCE REOGRAPHY IN CARDIOLOGY – NEW APPROACHES

open access: yesAlʹmanah Kliničeskoj Mediciny, 2016
Background: The impedance rheocardiography is a  simple, inexpensive, noninvasive method of assessment of central hemodynamics that can be used for detection of cardiovascular remodeling and thus promote an improvement of cardiovascular mortality. Modern
A. A. Dumler   +3 more
doaj   +1 more source

Phonocardiopulmography: the future of perioperative auscultation [PDF]

open access: yesAnesthesia and Pain Medicine
Traditionally, anesthesiologists have recommended performing auscultation of breath and heart sounds with a precordial or esophageal stethoscope during anesthesia.
Sung-Hoon Kim
doaj   +1 more source

Phonocardiography and Photoplethysmography With Simple Arduino Setups to Support Interdisciplinary STEM Education

open access: yesIEEE Access, 2019
Small computer board platforms, such as Arduino, Raspberry Pi, and micro: bit are very common, cheap, and useful tools to teach modern technology, coding, and experimenting in different disciplines at various levels. Due to the huge available information
Zoltan Gingl   +4 more
doaj   +1 more source

A Novel Method for Measuring the Timing of Heart Sound Components through Digital Phonocardiography

open access: yesSensors, 2019
The auscultation of heart sounds has been for decades a fundamental diagnostic tool in clinical practice. Higher effectiveness can be achieved by recording the corresponding biomedical signal, namely the phonocardiographic signal, and processing it by ...
Noemi Giordano, Marco Knaflitz
doaj   +1 more source

SEPARATING SOURCES FROM SEQUENTIALLY ACQUIRED MIXTURES OF HEART SIGNALS [PDF]

open access: yes, 2011
© 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Coimbra, MT   +5 more
core   +1 more source

A Robust Interpretable Deep Learning Classifier for Heart Anomaly Detection Without Segmentation

open access: yes, 2020
Traditionally, abnormal heart sound classification is framed as a three-stage process. The first stage involves segmenting the phonocardiogram to detect fundamental heart sounds; after which features are extracted and classification is performed.
Denman, Simon   +5 more
core   +1 more source

A Low-Cost, Portable, High-Throughput Wireless Sensor System for Phonocardiography Applications

open access: yesSensors, 2012
This paper presents the design and testing of a wireless sensor system developed using a Microchip PICDEM developer kit to acquire and monitor human heart sounds for phonocardiography applications.
Akkarapol Sa-ngasoongsong   +4 more
doaj   +1 more source

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