Classification and evaluation of the severity of tricuspid regurgitation using phonocardiogram

Publication date: March 2020Source: Biomedical Signal Processing and Control, Volume 57Author(s): Ahmad Rujoie, Ali Fallah, Saeid Rashidi, Elaheh Rafiei Khoshnood, Tirdad Seifi AlaAbstractCardiovascular disorders (CVDs) have attracted a great deal of attention given that they are one of the most common causes of mortality every year. With early diagnoses, CVDs can be controlled before reaching the critical stage. Listening to heart sounds has been a common way of evaluating the cardiovascular system. The sound signal generated by the heart’s mechanical activity provides useful information on the operation of the heart valves. Due to human hearing limitations as well as transient and non-stationary nature of heart sounds, diagnosis based on auscultation is difficult and requires training, repetition, and expertise. The purpose of this study is to diagnose and assess the severity of tricuspid regurgitation (TR), a disease that most adults suffer from without being aware of it, by using phonocardiogram (PCG) and without the employment of auxiliary tools such as the electrocardiogram (ECG). To this end, PCG signal is first preprocessed using Shannon energy envelope (SEE) and Hilbert-transform (HT). The Mel Frequency Cepstral Coefficient (MFCC) is used along with the wavelet transform method for feature extraction; superior features are then selected with the genetic algorithm (GA). The accuracy of the proposed method was 98.78 ± 0.95% and kappa was 98.12 &plusm...
Source: Biomedical Signal Processing and Control - Category: Biomedical Science Source Type: research

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Publication date: Available online 14 September 2019Source: Heart &LungAuthor(s): Zenghui Zhang, Jun GuoAbstractBackgroundLeft ventricular aneurysm (LVA) is a severe complication of ST-elevation myocardial infarction (STEMI) and is associated with poor prognosis due to high mortality. However, predictors of LVA formation in early period are inadequately defined.ObjectivesThe purpose of this study is to determine potential predictors of LVA formation in early period (
Source: Heart and Lung: The Journal of Acute and Critical Care - Category: Respiratory Medicine Source Type: research
AbstractMaking a firm diagnosis of chronic heart failure with preserved ejection fraction (HFpEF) remains a challenge. We recommend a new stepwise diagnostic process, the ‘HFA–PEFF diagnostic algorithm’. Step 1 (P=Pre-test assessment) is typically performed in the ambulatory setting and includes assessment for HF symptoms and signs, typical clinical demographics (obesity, hypertension, diabetes mellitus, elderly, atrial fibrillation), and diagnostic laboratory tests, electrocardiogram, and echocardiography. In the absence of overt non-cardiac causes of breathlessness, HFpEF can be suspected if there is a ...
Source: European Heart Journal - Category: Cardiology Source Type: research
CONCLUSIONS: POAF was clinical predictors of delayed early rehabilitation in patients undergoing heart valve surgery. The combination of POAF with delayed early rehabilitation conferred a high risk of decline in lower-extremity function during hospitalization. PMID: 31289706 [PubMed]
Source: Physical Therapy - Category: Physiotherapy Authors: Tags: Phys Ther Res Source Type: research
Conclusions: Embolism associated with asymptomatic carotid stenosis shows circadian variation with highest rates 4–6 h before midday. This corresponds with peak circadian incidence of stroke and other vascular complications. These and ASED Study results show that monitoring frequency, duration, and time of day are important in ES detection. Introduction Transcranial Doppler (TCD) detected microembolism in the ipsilateral middle cerebral artery (MCA) may help stratify the risk of stroke and other arterial disease complications in persons with advanced (≥60%) asymptomatic carotid stenosis. If so, this techniqu...
Source: Frontiers in Neurology - Category: Neurology Source Type: research
This article is protected by copyright. All rights reserved. PMID: 30958594 [PubMed - as supplied by publisher]
Source: Cell Biology International - Category: Cytology Authors: Tags: Cell Biol Int Source Type: research
AbstractObjectivesWe herein report a single-center experience with the Portico TAVI system. Main focus was set on outcomes in patients with impaired left ventricular (LV) function and predictors for permanent pacemaker (PPM) implantation.MethodsBetween 05/2014 and 10/2017, 106 consecutive patients received TAVI using the Portico device. For comparison of patients with/without impaired LV function, and determination of multi-slice computed tomography and electrocardiogram correlates for PPM implantation subgroups were built (Subgroup I: LVEF  ≥ 50%,n = 69, Subgroup II: LVEF 
Source: Clinical Research in Cardiology - Category: Cardiology Source Type: research
Authors: Worku B, de Biasi A, Horowitz J, Kampaktsis P, Elmously A, Minutello R, Wong SC, Salemi A Abstract BACKGROUND: Transcatheter aortic valve replacement (TAVR) is associated with several conduction abnormalities and a need for pacemaker placement. The study aim was to describe all electrocardiographic (ECG) changes seen after TAVR, to compare such changes between transapical (TA) and transfemoral (TF) patient cohorts, and to assess their impact on postoperative outcomes. METHODS: Between March 2009 and July 2014, a total of 286 consecutive patients underwent TAVR at the present authors' institution. Perio...
Source: Journal of Heart Valve Disease - Category: Cardiology Tags: J Heart Valve Dis Source Type: research
Differentiation of prosthetic valve thrombus from pannus is often difficult by echocardiography. Both can cause abnormal masses and both can cause increase in the transvalvar gradients and leaftlet thickness. Multi detector computed tomograms are useful for differentiation of prosthetic valve thrombus from pannus. Attenuation of signals as measured in Hounsfield units is lower for the thrombus compared to pannus. Pannus has attenuation values similar to the adjacent interventricular septum. ECG (electrocardiogram) gated computed tomography (CT) also helps in the assessment of the dynamic function of the prosthetic va...
Source: Cardiophile MD - Category: Cardiology Authors: Tags: General Cardiology Source Type: blogs
AbstractObjectivesWe herein report a single-center experience with the Portico TAVI system. Main focus was set on outcomes in patients with impaired left ventricular (LV) function and predictors for permanent pacemaker (PPM) implantation.MethodsBetween 05/2014 and 10/2017, 106 consecutive patients received TAVI using the Portico device. For comparison of patients with/without impaired LV function, and determination of multi-slice computed tomography and electrocardiogram correlates for PPM implantation subgroups were built (Subgroup I: LVEF  ≥ 50%,n = 69, Subgroup II: LVEF 
Source: Clinical Research in Cardiology - Category: Cardiology Source Type: research
We are pleased to provide a response to the letter to the Editor entitled “Cut-off for High-Sensitivity Cardiac Troponin T Not Arbitrarily but Accordingly to Usual Clinical Practice,”1 regarding our article previously published in the Journal.2 In this letter to the Editor, Cubero-Gallego and colleagues1 raised several important issues related to the combination of biomarkers with electrocardiographic (ECG) or transthoracic echocardiographic criteria to diagnose perioperative myocardial infarction (MI), the mechanism of perioperative MI after heart valve surgery, and the requirement of a stable b...
Source: The Journal of Thoracic and Cardiovascular Surgery - Category: Cardiovascular & Thoracic Surgery Authors: Tags: Adult: Perioperative management: Letter to the editor Source Type: research
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