Results 21 to 30 of about 5,458 (233)

A Comprehensive Nomogram Integrating Phonocardiogram and Echocardiogram Features for the Diagnosis of Heart Failure With Preserved Ejection Fraction. [PDF]

Clin Cardiol
A total of 204 patients and 49 features were collected. After splitting the population into training and test sets according to a ratio of 7:3, the LASSO and logistic regression was used to select the final five factors for a nomogram. The AUC for the nomogram model is 0.945, while the AUC for the echocardiographic parameters combined with NT‐proBNP in
Cao L, Guo X, Liao K, Qin J, Zheng Y.
europepmc   +2 more sources

Exploring the Impact of Signal Quality Enhancement on Heart Sound Classification Models

IEEE Access, 2023
Limited cardiology resources increase the urgency for automated heart disease screening for the general public. Heart sound diagnostic models have been recently employed as a cost-effective solution for the initial screening of heart disease.
Davoud Shariat Panah, Andrew Hines, Susan Mckeever   +2 more
doaj   +1 more source

Acoustic Cardiography (ACG) for Left Ventricular Ejection Time (LVET) Monitoring in Preeclampsia Risk Prediction. [PDF]

Clin Cardiol
ACG‐derived parameters (LVET), integrated with clinical risk factors, demonstrated dynamic monitoring potential for early Preeclampsia detection, particularly in resource‐limited settings. ABSTRACT Background Preeclampsia (PE), a leading cause of maternal morbidity, lacks reliable early biomarkers.
Tang C, Zhang X, Wang M, Xiong Y, Zhu Y, Huang Q, Zhou N.   +6 more
europepmc   +2 more sources

Discrimination of Patients with Varying Degrees of Coronary Artery Stenosis by ECG and PCG Signals Based on Entropy

Entropy, 2021
Coronary heart disease (CHD) is the leading cause of cardiovascular death. This study aimed to propose an effective method for mining cardiac mechano-electric coupling information and to evaluate its ability to distinguish patients with varying degrees ...
Huan Zhang, Xinpei Wang, Changchun Liu, Yuanyang Li, Yuanyuan Liu, Yu Jiao, Tongtong Liu, Huiwen Dong, Jikuo Wang   +8 more
doaj   +1 more source

Cross-Domain Transfer Learning for PCG Diagnosis Algorithm

Biosensors, 2021
Cardiechema is a way to reflect cardiovascular disease where the doctor uses a stethoscope to help determine the heart condition with a sound map.
Kuo-Kun Tseng, Chao Wang, Yu-Feng Huang, Guan-Rong Chen, Kai-Leung Yung, Wai-Hung Ip   +5 more
doaj   +1 more source

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

High-resolution phonocardiogram parameters

IOP Conference Series: Materials Science and Engineering, 2021
Abstract The article describes the results of studying and analyzing phonocardiograms (PCGs) obtained during a physiological experiment with Blu-ray standard equipment. It provides the findings of a spectral and spectral-time analysis for signals with a sampling frequency of 10, 44.1 and 192 kHz.
Zemlyakov, I. Yu., Zdanov, D. S., Kosteley, Y. V., Golobokova, E. V., Dikman, Ekaterina Yurievna, Bureev, A. Sh.   +5 more
openaire   +2 more sources

Classification of Heart Sounds Using Chaogram Transform and Deep Convolutional Neural Network Transfer Learning

Sensors, 2022
Heart sounds convey important information regarding potential heart diseases. Currently, heart sound classification attracts many researchers from the fields of telemedicine, digital signal processing, and machine learning—among others—mainly to identify
Ali Harimi, Yahya Majd, Abdorreza Alavi Gharahbagh, Vahid Hajihashemi, Zeynab Esmaileyan, José J. M. Machado, João Manuel R. S. Tavares   +6 more
doaj   +1 more source

Early diastolic heart sounds caused by the atrial kick. [PDF]

Ann Noninvasive Electrocardiol
Phonogram (top) demonstrates an early diastolic sound (arrows) which corresponds to the P‐wave on the EKG in a patient with second‐degree type I AV block. Abstract An 81‐year‐old male with a history of coronary artery disease, hypertension, paroxysmal atrial fibrillation and chronic kidney disease presents with asymptomatic bradycardia. Examination was
Bachour K, Mendez E, Jackson S, Lluri G, Honda HM.   +4 more
europepmc   +2 more sources

Deep Recurrent Learning for Heart Sounds Segmentation based on Instantaneous Frequency Features

Revista Elektrón, 2020
In this work, a novel stack of well-known technologies is presented to determine an automatic method to segment the heart sounds in a phonocardiogram (PCG).
Alvaro Joaquin Gaona, Pedro David Arini
doaj   +1 more source