Results 21 to 30 of about 2,560 (213)

Importance of fourth heart sound and preserved left atrial function in wild-type transthyretin amyloidosis. [PDF]

ESC Heart Fail
Abstract Aims A fourth heart sound (S4) was reported to be almost never present in patients with amyloid light‐chain cardiomyopathy. There have been no reports on S4 in patients with wild‐type transthyretin amyloid cardiomyopathy (ATTRwt‐CM). This study aimed to clarify the clinical implications of S4 in patients with ATTRwt‐CM.
Ochi Y, Yamasaki N, Kubo T, Baba Y, Miyagawa K, Noguchi T, Hirota T, Hamada T, Kitaoka H.   +8 more
europepmc   +2 more sources

Evaluating a Preprocessing Pipeline for Fetal Phonocardiography Using FIR Filtering

Jurnal Elkomika
This study evaluates the effectiveness of a preprocessing pipeline consisting of resampling, normalization, and Finite Impulse Response (FIR) filtering to improve signal consistency for further signal analyses such as feature extraction and ...
SAHI RAFAEL DAMARDHI, IRMALIA SURYANI FARADISA, SOTYOHADI SOTYOHADI   +2 more
doaj   +2 more sources

A Hardware-Software System for Accurate Segmentation of Phonocardiogram Signal [PDF]

Journal of Biomedical Physics and Engineering, 2023
Background: Phonocardiogram (PCG) signal provides valuable information for diagnosing heart diseases. However, its applications in quantitative analyses of heart function are limited because the interpretation of this signal is difficult.
Mohammad Mehdi Movahedi, Mohamadreza Shakerpour, Shahrokh Mousavi, Ahmad Nori, Seyyed Hesam Mousavian Dehkordi, Hossein Parsaei   +5 more
doaj   +1 more source

Automated Assessment of the Quality of Phonocardographic Recordings through Signal-to-Noise Ratio for Home Monitoring Applications

Sensors, 2021
The signal quality limits the applicability of phonocardiography at the patients’ domicile. This work proposes the signal-to-noise ratio of the recorded signal as its main quality metrics.
Noemi Giordano, Samanta Rosati, Marco Knaflitz   +2 more
doaj   +1 more source

A Wearable Multi-Sensor Array Enables the Recording of Heart Sounds in Homecare

Sensors, 2023
The home monitoring of patients affected by chronic heart failure (CHF) is of key importance in preventing acute episodes. Nevertheless, no wearable technological solution exists to date. A possibility could be offered by Cardiac Time Intervals extracted
Noemi Giordano, Samanta Rosati, Gabriella Balestra, Marco Knaflitz   +3 more
doaj   +1 more source

A Semi-automatic Heart Sounds Identification Model and Its Implementation in Internet of Things Devices

Advances in Electrical and Computer Engineering, 2021
Identification of heart sound signals in the form of a phonocardiogram (PCG) has recently attracted the attention of many researchers along with the development of small devices and global Internet connection in a way to offer automatic illness ...
JUSAK, J., PUSPASARI, I., KUSUMAWATI, W. I.   +2 more
doaj   +1 more source

Health Monitoring via Heart, Breath, and Korotkoff Sounds by Wearable Piezoelectret Patches

Advanced Science, Volume 10, Issue 28, October 6, 2023., 2023
Flexible piezoelectret patches are developed to examine audio physiological signals from cardiovascular and respiratory systems, including heart, Korotkoff, and breath sounds. A customized electromagnetic shielding structure is designed for precision and high‐fidelity measurements and several unique physiological sound patterns have been collected and ...
Liuyang Han, Weijin Liang, Qisen Xie, JingJing Zhao, Ying Dong, Xiaohao Wang, Liwei Lin   +6 more
wiley   +1 more source

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

Advanced 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

Journal 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, Ying Guo, Ying Dong, Xueting Li, Qian Liu, Qi Liu, Guohong Wang, Mingzhao Qin, Zhenzhou Zhang, Jiawei Song, Lirong Liang, Jiuchang Zhong   +11 more
wiley   +1 more source

HeartSiam: A Domain Invariant Model for Heart Sound Classification [PDF]

, 2022
Cardiovascular disease is one of the leading causes of death according to WHO. Phonocardiography (PCG) is a costeffective, non-invasive method suitable for heart monitoring. The main aim of this work is to classify heart sounds into normal/abnormal categories. Heart sounds are recorded using different stethoscopes, thus varying in the domain.
arxiv   +1 more source