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pyPCG: a Python toolbox specialized for phonocardiography analysis.
Physiol Meas
December 2024
Biomedical Engineering, Technion Israel Institute of Technology, Julius Silver Building, Haifa, 32000, ISRAEL.
Objective: Phonocardiography has recently gained popularity in low-cost and remote monitoring, including passive fetal heart monitoring. The development of methods which analyse phonocardiographic data tries to capitalize on this opportunity, and in recent years a multitude of such algorithms and models have been published. In these approaches there is little to no standardization and multiple parts of these models have to be reimplemented on a case-by-case basis.
View Article and Find Full Text PDFA new smartphone-based digital stethoscope featuring phonocardiography and electrocardiography in adult horses.
Vet Res Commun
November 2024
Department of Veterinary Sciences, University of Pisa, Pisa, Italy.
Smartphone-based technology is increasingly used in veterinary medicine as a complementary tool for cardiac auscultation and ECG recording. This prospective observational study evaluates a digital stethoscope (DS) that consists of simultaneous phonocardiographic and one-lead ECG recording (dECG) in adult horses, comparing it with auscultation using a conventional stethoscope (CS) and reference base-apex ECG (rECG). A total of 104 horses underwent cardiac auscultation using CSs and DSs to detect arrhythmias and murmurs.
View Article and Find Full Text PDFCorrelations between heart sound components and hemodynamic variables.
Sci Rep
April 2024
Department of Anesthesiology and Pain Medicine, Asan Medical Center, Brain Korea 21 Project, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Korea.
Article Synopsis
- * Different drugs were administered to manipulate cardiac contractility and vascular resistance, and the correlation between heart sound changes (specifically S1 amplitude) and blood pressure metrics was analyzed.
- * The findings suggest that changes in S1 amplitude are closely linked to cardiac contractility variations, but not significantly related to vascular resistance changes, indicating the potential for non-invasive monitoring of hemodynamic conditions.
Evaluation of a digital stethoscope for electrocardiographic recording in donkeys: Preliminary results.
J Equine Vet Sci
April 2024
Department of Veterinary Medicine and Animal Science, Università degli Studi di Milano, via dell'Università 6, Lodi, Italy, 26900. Electronic address:
The digital stethoscope (DS) is a cost-effective single-lead digital stethoscope that allows simultaneous electrocardiographic (ECG) and phonocardiographic recordings on a smartphone. Despite its application in small animals and horses, there are currently no studies on its use in donkeys. The aim of this study was to evaluate the use of a new smartphone-based DS device in recording ECG tracings in donkeys.
View Article and Find Full Text PDFDetecting Aortic Valve Anomaly From Induced Murmurs: Insights From Computational Hemodynamic Models.
Front Physiol
October 2021
Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, MD, United States.
Patients who receive transcatheter aortic valve replacement are at risk for leaflet thrombosis-related complications, and can benefit from continuous, longitudinal monitoring of the prosthesis. Conventional angiography modalities are expensive, hospital-centric and either invasive or employ potentially nephrotoxic contrast agents, which preclude their routine use. Heart sounds have been long recognized to contain valuable information about individual valve function, but the skill of auscultation is in decline due to its heavy reliance on the physician's proficiency leading to poor diagnostic repeatability.
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