keyword
MENU ▼
Read by QxMD icon Read
search

Cardiac arrhythmias

keyword
https://www.readbyqxmd.com/read/28227775/3d-anatomical-reconstruction-of-human-cardiac-conduction-system-and-simulation-of-bundle-branch-block-after-tavi-procedure
#1
Andrew J Atkinson, Sanjay R Kharche, Michael G Bateman, Paul A Iaizzo, Halina Dobrzynski, Andrew J Atkinson, Sanjay R Kharche, Michael G Bateman, Paul A Iaizzo, Halina Dobrzynski, Andrew J Atkinson, Paul A Iaizzo, Halina Dobrzynski, Sanjay R Kharche, Michael G Bateman
The cardiac conduction system (CCS) is responsible for the initiation and propagation of action potentials through the heart ensuring efficient pumping of blood. Understanding the anatomy of the CCS and its relationship with other major cardiac components is important to help understand arrhythmias and how certain procedures may increase the incidence of arrhythmias developing. We sectioned a whole human heart and performed Masson's trichrome histology in order to identify the components of the CCS. The histology images were used to construct a 3D anatomical model...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227702/socioeconomic-status-age-and-heart-rate-variability-in-a-bangladeshi-community
#2
Nishat E-Sharmin Trisha, Herbert F Jelinek, Mika P Tarvainen, David J Cornforth, Dewan S Alam, Megan Smith, Nishat E-Sharmin Trisha, Herbert F Jelinek, Mika P Tarvainen, David J Cornforth, Dewan S Alam, Megan Smith, Herbert F Jelinek, David J Cornforth, Megan Smith, Nishat E-Sharmin Trisha, Dewan S Alam, Mika P Tarvainen
Socioeconomic status (SES) is a risk factor for cardiovascular disease (CVD) and either low or high heart rate variability (HRV) at rest has been shown to predict cardiovascular morbidity and mortality. The study investigated the extent HRV features can predict SES. Four hundred and twenty eight people were randomly selected from the commercial districts (high SES) and slum areas (low SES) within Dhaka city. Demographic, clinical, and HRV features were recorded. Of the clinical variables age, waist circumference and diastolic blood pressure (p<;0...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227487/e-health-prototype-system-for-cardiac-telemonitoring
#3
Laura Juliana Vargas Escobar, Sergio Alexander Salinas, Laura Juliana Vargas Escobar, Sergio Alexander Salinas, Sergio Alexander Salinas, Laura Juliana Vargas Escobar
This paper presents the approach of an e-health system for cardiac telemonitoring which uses the development board LinkIt ONE as a monitoring system. Such board was adapted to measure the cardiac pulse, analyze it and determine whether a person is having a cardiac arrhythmia or not. When an arrhythmia appears, the prototype activates an alarm in order to report the patient's condition and its location to a caregiver or a close healthcare center. The data of the cardiac pulse is originated in an e-health sensor platform connected to an Arduino...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227086/catheter-simulator-software-tool-to-generate-electrograms-of-any-multi-polar-diagnostic-catheter-from-3d-atrial-tissue
#4
Kristina E Shillieto, Prasanth Ganesan, Anthony J Salmin, Elizabeth M Cherry, Arkady M Pertsov, Behnaz Ghoraani, Kristina E Shillieto, Prasanth Ganesan, Anthony J Salmin, Elizabeth M Cherry, Arkady M Pertsov, Behnaz Ghoraani, Arkady M Pertsov, Behnaz Ghoraani, Anthony J Salmin, Kristina E Shillieto, Elizabeth M Cherry, Prasanth Ganesan
Simulations are excellent tools for assessing new therapeutic strategies and are often conducted before implementing new therapy options in a clinical practice. For patients suffering from a heart arrhythmia, the main source of information comes from an intracardiac catheter. One of the common catheters is a Lasso multi-pole diagnostic catheter, which is a catheter that has 20 electrodes in a circular pattern. In this paper, we developed algorithm and simulation software that allows the users to place a multi-pole catheter on the atrial endocardial surface and record electrograms...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227008/risk-prediction-for-cardiovascular-disease-using-ecg-data-in-the-china-kadoorie-biobank
#5
Yanting Shen, Yang Yang, Sarah Parish, Zhengming Chen, Robert Clarke, David A Clifton, Yanting Shen, Yang Yang, Sarah Parish, Zhengming Chen, Robert Clarke, David A Clifton, Yang Yang, Zhengming Chen, Yanting Shen, David A Clifton, Robert Clarke, Sarah Parish
We set out to use machine learning techniques to analyse ECG data to improve risk evaluation of cardiovascular disease in a very large cohort study of the Chinese population. We performed this investigation by (i) detecting "abnormality" using 3 one-class classification methods, and (ii) predicting probabilities of "normality", arrhythmia, ischemia, and hypertrophy using a multiclass approach. For one-class classification, we considered 5 possible definitions for "normality" and used 10 automatically-extracted ECG features along with 4 blood pressure features...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226649/heart-rate-independent-qt-variability-component-can-detect-subclinical-cardiac-autonomic-neuropathy-in-diabetes
#6
Mohammad H Imam, Chandan K Karmakar, Ahsan H Khandoker, Herbert F Jelinek, M Palaniswami, Mohammad H Imam, Chandan K Karmakar, Ahsan H Khandoker, Herbert F Jelinek, M Palaniswami, Ahsan H Khandoker, Herbert F Jelinek, Chandan K Karmakar, Mohammad H Imam, M Palaniswami
Cardiac autonomic neuropathy (CAN) may lead to life threatening arrhythmia due to denervation of both the parasympathetic and sympathetic branches of autonomic nervous system innervating the heart. CAN is a frequently under diagnosed complication of diabetes, because a patient can have asymptomatic CAN for several years before it is clinically apparent. However, detection of CAN at the early or subclinical stage leads to more effective treatment outcomes. Cardiac autonomic reflex tests (CART) (i.e. Ewing test battery) are normally used for the detection and staging of CAN...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226575/wearable-ecg-platform-for-continuous-cardiac-monitoring
#7
S P Preejith, R Dhinesh, Jayaraj Joseph, Mohanasankar Sivaprakasam, S P Preejith, R Dhinesh, Jayaraj Joseph, Mohanasankar Sivaprakasam, R Dhinesh, Mohanasankar Sivaprakasam, S P Preejith, Jayaraj Joseph
An ultra-low power ECG platform for continuous and minimally intrusive monitoring for systems with minimal processing capabilities, is presented in this paper. The platform is capable of detecting abnormalities in the ECG signal by extracting and analyzing features related to various cardiac trends. The platform is built to continuously operate on any of the 12 leads and the presented work includes a single lead implementation that works on lead I or II. A single lead, wearable ECG patch that can detect rhythm based arrhythmias and continuously monitor beat-to-beat heart rate and respiratory rate has been developed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226552/patient-specific-detection-of-ventricular-tachycardia-in-remote-continuous-health-devices
#8
Amit Juneja, Michael Marefat, Amit Juneja, Michael Marefat, Amit Juneja, Michael Marefat
Ventricular Tachycardia (VT) is a dangerous arrhythmic event which can lead to sudden cardiac death if not detected and taken care of in time. This work uses non-linear features derived from Recurrence Quantification Analysis (RQA) along with Kolmogorov complexity, by analyzing the ECG signals, to train a classifier which can predict VT prior to their onset in remote continuous health devices. Compressed ECG signal along with amplitude ranges extracted from the ECG signal are used as features to strengthen the classifier...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226544/kurtosis-as-a-statistical-approach-to-identify-the-pivot-point-of-the-rotor
#9
Shivaram P Arunachalam, Elizabeth M Annoni, Siva K Mulpuru, Paul A Friedman, Elena G Tolkacheva, Shivaram P Arunachalam, Elizabeth M Annoni, Siva K Mulpuru, Paul A Friedman, Elena G Tolkacheva, Elena G Tolkacheva, Paul A Friedman, Elizabeth M Annoni, Siva K Mulpuru, Shivaram P Arunachalam
Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia that causes stroke affecting more than 2.3 million people in the US. Catheter ablation to terminate AF is successful for paroxysmal AF but suffers limitations with persistent AF patients as current mapping methods cannot identify AF active substrates outside of pulmonary vein region. In this work, we developed a novel Kurtosis based mapping technique that can accurately identify pivot points of the rotors that were induced in ex-vivo isolated rabbit heart...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226541/combined-reconstruction-of-atrial-morphology-and-paracardial-fat-depositions-to-study-remodeling-in-atrial-fibrillation
#10
N Popovic, P Haemers, R Willems, P Claus, N Popovic, P Haemers, R Willems, P Claus, P Claus, P Haemers, N Popovic, R Willems
Atrial fibrillation (AF) is the most frequent sustained cardiac arrhythmia. AF is shown to be a progressive disease, which is strongly associated with important structural (morphological and histological), electrical and mechanical remodeling of the left atrium (LA). Adipose tissue accumulation has been shown to be a risk factor in AF. We set out to explore the connection between adipose tissue coverage of the LA surface, for both the complete LA and specific regions and the progression of AF. In this study we propose a methodology to study the regional coverage of the left-atrial wall with adipose tissue based on magnetic resonance data...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226472/statistical-approach-for-lightweight-detection-of-anomalies-in-ecg
#11
Ihor Vasyltsov, Changgyu Bak, Jiseung Jeong, Ihor Vasyltsov, Changgyu Bak, Jiseung Jeong, Changgyu Bak, Ihor Vasyltsov, Jiseung Jeong
In this paper the application of statistical approach for anomaly detection in a wearable ECG monitor has been considered. The method is based on the usage of the pre-defined expected behavior of the monitored biomedical signal and its on-line comparison with real-time measurements. Such comparison can be implemented based on the statistical model of ECG signal. To test the accuracy of the proposed method a ProSim 8 simulator was used to generate ECG signals. Our experiments showed that critical anomalies in ECG, such as Cardiac Failure, different types of Arrhythmia, and ST-segment deviations can be detected with high precision (96~100%), while false positive rate over typical NSR signal is low (<;4%)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226462/effects-and-underlying-mechanisms-of-refractory-period-pacing-on-repolarization-dynamics-in-the-human-heart
#12
Diogo Santos, Michele Orini, Xin Zhou, Alfonso Bueno-Orovio, Ben Hanson, Peter Taggart, Martin Hayward, Blanca Rodriguez, Pier Lambiase, Diogo Santos, Michele Orini, Xin Zhou, Alfonso Bueno-Orovio, Ben Hanson, Peter Taggart, Martin Hayward, Blanca Rodriguez, Pier Lambiase, Ben Hanson, Diogo Santos, Martin Hayward, Pier Lambiase, Alfonso Bueno-Orovio, Blanca Rodriguez, Michele Orini, Xin Zhou, Peter Taggart
Repolarization alternans is related to the initiation of life threatening cardiac arrhythmias. Experimental and computational studies suggest that the abolishment of alternans using dynamic pacing protocols may prevent abnormal heart rhythms. In a recent animal study, refractory period pacing (RPP) on every other beat has shown promising results in alternans reduction. However, the cellular mechanisms underlying this therapy and its efficiency in human patients remain unclear. In this study, in vivo unipolar electrograms acquired during RPP from 240 epicardial sites from one patient were analysed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226460/pro-arrhythmic-effect-of-heart-rate-variability-during-periodic-pacing
#13
Kanchan Kulkarni, Steven W Lee, Elena G Tolkacheva, Kanchan Kulkarni, Steven W Lee, Elena G Tolkacheva, Elena G Tolkacheva, Steven W Lee, Kanchan Kulkarni
Clinically, healthy hearts have been associated with a high ventricular heart rate variability (HRV) while diseased hearts have been known to exhibit low ventricular HRV. Hence, low HRV is suggested to be a marker of cardiac ventricular arrhythmias. Over the past few years, there has been considerable amount of interest in incorporating HRV in pacing to emulate healthy heart conditions and re-stabilize the electrical activity in diseased hearts. Recently, we used single cell numerical simulations to demonstrate that HRV incorporated into periodic pacing promotes alternans formation and thus, can be pro-arrhythmic...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226451/non-invasive-imaging-of-ventricular-activation-during-pacing-and-arrhythmia-methods-and-validation
#14
Long Yu, Steven Pogwizd, Bin He, Long Yu, Steven Pogwizd, Bin He, Bin He, Steven Pogwizd, Long Yu
Cardiovascular disease continued to be a leading killer world widely. Each year, about 400,000 cases of sudden cardiac arrest are reported in the U.S. alone. Clinically, radio-frequency ablative procedure has become widely applied in the treatment of ventricular arrhythmia. Non-invasive approaches have been demonstrated to be able to provide important information on the arrhythmogenesis and potentially assist in the clinical practice. In this work, we develop and validate a novel temporal sparse based imaging method, Cardiac Electrical Sparse Imaging (CESI)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28224950/effects-of-injection-site-splinting-on-the-incidence-of-phlebitis-in-patients-taking-peripherally-infused-amiodarone-a-randomized-clinical-trial
#15
Farah Ayat-Isfahani, Mina Pashang, Bita Davoudi, Saeed Sadeghian, Arash Jalali
Intravenous amiodarone is considered an effective treatment option for cardiac ventricular and atrial arrhythmias. Peripheral infusion of amiodarone may cause blood vessels irritation and phlebitis that is the most common complication of this drug by this route even when it is administered within recommended dosing limits. The effect of injection-site splinting on the occurrence of phlebitis among a group of cardiac arrhythmia patients receiving peripherally infused amiodarone. This research is a clinical trial on patients of Tehran Heart Center who were hospitalized due to cardiac arrhythmias...
March 2017: Journal of Vascular Nursing: Official Publication of the Society for Peripheral Vascular Nursing
https://www.readbyqxmd.com/read/28224871/-a-patient-with-severe-digoxin-toxicity
#16
K P van Rhee, R van Bentum, K van Keulen, M I Kuypers, M B Haak
BACKGROUND: Digoxin is a cardiac glycoside that is frequently prescribed in atrial fibrillation and heart failure. Symptoms such as nausea, hyperkalaemia, cardiac arrhythmias and cardiac arrest are seen in digoxin toxicity. The treatment focuses on reduction of digoxin absorption, prevention of hypokalaemia and hyperkalaemia, treatment of symptoms and, in severe toxicity, administration of digoxin antibodies. CASE DESCRIPTION: A 73-year-old man with a history of extensive cardiac disease was seen 45 minutes after ingesting 20 mg of digoxin...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28223225/the-control-of-cardiac-ventricular-excitability-by-autonomic-pathways
#17
REVIEW
Malcolm Finlay, Stephen C Harmer, Andrew Tinker
Central to the genesis of ventricular cardiac arrhythmia are variations in determinants of excitability. These involve individual ionic channels and transporters in cardiac myocytes but also tissue factors such as variable conduction of the excitation wave, fibrosis and source-sink mismatch. It is also known that in certain diseases and particularly the channelopathies critical events occur with specific stressors. For example, in hereditary long QT syndrome due to mutations in KCNQ1 arrhythmic episodes are provoked by exercise and in particular swimming...
February 13, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28223123/proarrhythmia-liability-assessment-and-the-comprehensive-in-vitro-proarrhythmia-assay-cipa-an-industry-survey-on-current-practice
#18
Simon Authier, Michael K Pugsley, John E Koerner, Bernard Fermini, William S Redfern, Jean-Pierre Valentin, Hugo M Vargas, Derek J Leishman, Krystle Correll, Michael J Curtis
INTRODUCTION: The Safety Pharmacology Society (SPS) has conducted a survey of its membership to identify industry practices related to testing considered in the Comprehensive In vitro Proarrhythmia Assay (CiPA). METHODS: Survey topics included nonclinical approaches to address proarrhythmia issues, conduct of in silico studies, in vitro ion channel testing methods used, drugs used as positive controls during the conduct of cardiac ion channel studies, types of arrhythmias observed in non-clinical studies and use of the anticipated CiPA ion channel assay...
February 18, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28223004/sudden-cardiac-death-among-hemodialysis-patients
#19
Melissa S Makar, Patrick H Pun
Hemodialysis patients carry a large burden of cardiovascular disease; most onerous is the high risk for sudden cardiac death. Defining sudden cardiac death among hemodialysis patients and understanding its pathogenesis are challenging, but inferences from the existing literature reveal differences between sudden cardiac death among hemodialysis patients and the general population. Vascular calcifications and left ventricular hypertrophy may play a role in the pathophysiology of sudden cardiac death, whereas traditional cardiovascular risk factors seem to have a more muted effect...
February 17, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28222965/ventricular-arrhythmias-and-sudden-death-in-tetralogy-of-fallot
#20
REVIEW
Philippe Maury, Frederic Sacher, Anne Rollin, Pierre Mondoly, Alexandre Duparc, Katja Zeppenfeld, Sebastien Hascoet
Malignant ventricular arrhythmias and sudden cardiac death may late happen in repaired tetralogy of Fallot, although probably less frequently than previously thought, especially with the advent of new surgical techniques/management. Ventricular tachycardias are caused by reentry around the surgical scars/patches and valves. Many predictive factors have been proposed, which suffer from poor accuracy. There is currently no recommended indication for prophylactic implantable cardioverter defibrillator implantation-except maybe in the case of multiple risk factors-while radiofrequncy ablation may be proposed in secondary prevention with or even without a back-up implantable cardioverter defibrillator in selected cases...
February 17, 2017: Archives of Cardiovascular Diseases
keyword
keyword
15626
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"