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https://www.readbyqxmd.com/read/28641381/supraventricular-tachyarrhythmias-in-patients-with-a-persistent-left-superior-vena-cava
#1
Jongmin Hwang, Hyoung-Seob Park, Jun Kim, Jeong Su Kim, Jong Sung Park, Ki-Hun Kim, Myung Hwan Bae, Sang-Hee Lee, Young Soo Lee, Seongwook Han, Dae-Kyeong Kim, Tae-Joon Cha, Dong Gu Shin, Byung Chun Jung, Yoon-Nyun Kim
Aims: A persistent left superior vena cava (PLSVC) is the most common thoracic venous anomaly. This venous anomaly can impact the evaluation and treatment of supraventricular tachyarrhythmia (SVA). The aim of this study was to assess the proportion and characteristics of PLSVC in adult SVA patients. Methods and results: From July 2002 to July 2012, clinical and procedural data from databases of 10 cardiac electrophysiology laboratories in the Yeungnam region of the Republic of Korea were reviewed...
June 20, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28630564/cathrob-a-highly-compact-and-versatile-remote-catheter-navigation-system
#2
Laura Cercenelli, Barbara Bortolani, Emanuela Marcelli
Several remote catheter navigation systems have been developed and are now commercially available. However, these systems typically require specialized catheters or equipment, as well as time-consuming operations for the system set-up. In this paper, we present CathROB, a highly compact and versatile robotic system for remote navigation of standard tip-steerable electrophysiology (EP) catheters. Key features of CathROB include an extremely compact design that minimizes encumbrance and time for system set-up in a standard cath lab, a force-sensing mechanism, an intuitive command interface, and functions for automatic catheter navigation and repositioning...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28593399/mri-use-for-atrial-tissue-characterization-in-arrhythmias-and-for-ep-procedure-guidance
#3
Ehud J Schmidt, Henry R Halperin
We review the utilization of magnetic resonance imaging methods for classifying atrial tissue properties that act as a substrate for common cardiac arrhythmias, such as atrial fibrillation. We then review state-of-the-art methods for mapping this substrate as a predicate for treatment, as well as methods used to ablate the electrical pathways that cause arrhythmia and restore patients to sinus rhythm.
June 7, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28541499/hypertension-and-cardiac-arrhythmias-executive-summary-of-a-consensus-document-from-the-european-heart-rhythm-association-ehra-and-esc-council-on-hypertension-endorsed-by-the-heart-rhythm-society-hrs-asia-pacific-heart-rhythm-society-aphrs-and-sociedad-latinoamericana
#4
Gregory Y H Lip, Antonio Coca, Thomas Kahan, Giuseppe Boriani, Antonis S Manolis, Michael Hecht Olsen, Ali Oto, Tatjana S Potpara, Jan Steffel, Francisco Marín, Márcio Jansen de Oliveira Figueiredo, Giovanni de Simone, Wendy S Tzou, Chern En Chiang, Bryan Williams
Hypertension (HTN) is a common cardiovascular risk factor leading to heart failure (HF), coronary artery disease (CAD), stroke, peripheral artery disease and chronic renal failure. Hypertensive heart disease can manifest as many types of cardiac arrhythmias, most commonly being atrial fibrillation (AF). Both supraventricular and ventricular arrhythmias may occur in HTN patients, especially in those with left ventricular hypertrophy (LVH), CAD, or HF. In addition, high doses of thiazide diuretics commonly used to treat HTN, may result in electrolyte abnormalities (e...
June 20, 2017: European Heart Journal. Cardiovascular Pharmacotherapy
https://www.readbyqxmd.com/read/28507742/mark-e-josephson-the-boston-years
#5
Peter Zimetbaum
Mark Josephson came to Beth Israel Hospital from the University of Pennsylvania in 1992, having firmly established a reputation as a master clinician, scientist and educator. He had built one of the premier electrophysiology (EP) services in the world in Pennsylvania and had become Chief of Cardiology there by the age of 35. In those days, Beth Israel was well known for its interventional cardiology and cardiac imaging but had not yet committed to the development of a modern EP section. The buzz surrounding Mark's arrival predicted an outspoken, larger than life and irreverent character who would profoundly change the place...
April 2017: Arrhythmia & Electrophysiology Review
https://www.readbyqxmd.com/read/28507738/mark-e-josephson-clinical-investigator
#6
EDITORIAL
John M Miller
Mark E Josephson entered the world of clinical cardiac electrophysiology (EP) almost at its inception (1972); with so much to learn and so many directions one could take, he dived into the field with unbridled enthusiasm and an uncommon - perhaps almost unique - aptitude for asking questions and finding ways to answer them. Few aspects of EP escaped his indelible influence. In this short paper, I will attempt to touch on some of the high points of his astounding career as a clinical investigator.
April 2017: Arrhythmia & Electrophysiology Review
https://www.readbyqxmd.com/read/28459685/spatially-adaptive-multi-scale-optimization-for-local-parameter-estimation-in-cardiac-electrophysiology
#7
Jwala Dhamala, Hermenegild Arevalo, John Sapp, Milan Horacek, Katherine Wu, Natalia Trayanova, Linwei Wang
To obtain a patient-specific cardiac electrophysiological (EP) model, it is important to estimate the threedimensionally distributed tissue properties of the myocardium. Ideally, the tissue property should be estimated at the resolution of the cardiac mesh. However, such high dimensional estimation face major challenges in identifiability and computation. Most existing works reduce this dimension by partitioning the cardiac mesh into a pre-defined set of segments. The resulting lowresolution solutions have a limited ability to represent the underlying heterogeneous tissue properties of varying sizes, locations and distributions...
April 25, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28453186/emergency-physicians-are-able-to-detect-right-ventricular-dilation-with-good-agreement-compared-to-cardiology
#8
Matt A Rutz, Julie M Clary, Jeffrey A Kline, Frances M Russell
OBJECTIVE: Focused cardiac ultrasound (FOCUS) is a useful tool in evaluating patients presenting to the emergency department (ED) with acute dyspnea. Prior work has shown that right ventricular (RV) dilation is associated with repeat hospitalizations and shorter life expectancy. Traditionally, RV assessment has been evaluated by cardiologist-interpreted comprehensive echocardiography. The primary goal of this study was to determine the interrater reliability between emergency physicians (EPs) and a cardiologist for determining RV dilation on FOCUS performed on ED patients with acute dyspnea...
April 28, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28367164/single-dose-methotrexate-for-the-treatment-of-ectopic-pregnancy-our-experience-from-2010-to-2015
#9
Emre Erdem Tas, Gulin Feykan Yegin Akcay, Ayse Filiz Avsar
OBJECTIVE: To evaluate the success of systemic single-dose methotrexate (MTX) treatment in patients with ectopic pregnancy (EP) and to investigate factors related to treatment success. METHODS: This retrospective study had been performed in Yildirim Beyazit University between January 2010 and December 2015. Demographic and clinical characteristics, ultrasonografic findings, pretreatment serum β-human chorionic gonadotropin (β-hCG) and progesterone levels of 58 patients with EP were retrieved from hospital records retrospectively...
January 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28294370/is-there-a-prognostic-relevance-of-electrophysiological-studies-in-bundle-branch-block-patients
#10
Harilaos Bogossian, Gerrit Frommeyer, Kornelius Göbbert, Fuad Hasan, Quy Suu Nguyen, Ilias Ninios, Dejan Mijic, Dirk Bandorski, Reinhard Hoeltgen, Melchior Seyfarth, Bernd Lemke, Lars Eckardt, Markus Zarse
BACKGROUND: The present European guidelines suggest a diagnostic electrophysiological (EP) study to determine indication for cardiac pacing in patients with bundle branch block and unexplained syncope. We evaluated the prognostic relevance of an EP study for mortality and the development of permanent complete atrioventricular (AV) block in patients with symptomatic bifascicular block and first-degree AV block. HYPOTHESIS: The HV interval is a poor prognostic marker to predict the development of permanent AV block in patients with symptomatic bifascicular block (BFB) and AV block I°...
March 15, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28256250/high-sensitivity-troponin-as-a-biomarker-in-heart-rhythm-disease
#11
REVIEW
Cian P McCarthy, Omair Yousuf, Alvaro Alonso, Elizabeth Selvin, Hugh Calkins, John W McEvoy
Biomarkers are important prognostic tools in various cardiovascular conditions, including coronary artery disease and heart failure. Although their utility in cardiac electrophysiology (EP) is less established, biomarkers may guide EP clinical practice by identifying patients at risk for developing arrhythmias and their complications, in addition to augmenting therapeutic decisions by targeting appropriate pharmacologic and interventional therapies to patients who may benefit most. In this review, we focus on the prognostic role of high-sensitivity cardiac troponin (hs-cTn) assays-which detect subclinical cardiac myocyte damage-in cardiac arrhythmias and their sequelae...
May 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28249993/moderate-sedation-in-cardiac-electrophysiology-laboratory-a-retrospective-safety-analysis
#12
V Sawhney, E Bacuetes, M Wray, M Dhinoja, M J Earley, R J Schilling, S Sporton
OBJECTIVE: Cardiac electrophysiology (EP) procedures can be performed under moderate sedation without the direct involvement of an anaesthetist. However, concerns have been raised over the safety of this approach. This study examines the use of a standardised nurse-led physician-directed sedation protocol for EP procedures to determine the safety of moderate sedation administered by non-anaesthesia personnel who have been trained in sedation techniques. METHODS AND RESULTS: Consecutive EP procedures done under moderate sedation over 12 years at our institution were evaluated...
March 1, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28241971/an-interactive-platform-to-guide-catheter-ablation-in-human-persistent-atrial-fibrillation-using-dominant-frequency-organization-and-phase-mapping
#13
Xin Li, João L Salinet, Tiago P Almeida, Frederique J Vanheusden, Gavin S Chu, G André Ng, Fernando S Schlindwein
BACKGROUND AND OBJECTIVE: Optimal targets for persistent atrial fibrillation (persAF) ablation are still debated. Atrial regions hosting high dominant frequency (HDF) are believed to participate in the initiation and maintenance of persAF and hence are potential targets for ablation, while rotor ablation has shown promising initial results. Currently, no commercially available system offers the capability to automatically identify both these phenomena. This paper describes an integrated 3D software platform combining the mapping of both frequency spectrum and phase from atrial electrograms (AEGs) to help guide persAF ablation in clinical cardiac electrophysiological studies...
April 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28215569/cardiac-phenotype-and-long-term-prognosis-of-arrhythmogenic-right-ventricular-cardiomyopathy-dysplasia-patients-with-late-presentation
#14
Aditya Bhonsale, Anneline S J M Te Riele, Abhishek C Sawant, Judith A Groeneweg, Cynthia A James, Brittney Murray, Crystal Tichnell, Thomas P Mast, Michelle J van der Pols, Maarten J M Cramer, Dennis Dooijes, Jeroen F van der Heijden, Harikrishna Tandri, J Peter van Tintelen, Daniel P Judge, Richard N W Hauer, Hugh Calkins
BACKGROUND: The clinical profile of arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) patients with late presentation is unknown. OBJECTIVE: The purpose of this study was to characterize the genotype, cardiac phenotype, and long-term outcomes of ARVC/D patients with late presentation (age ≥50 years at diagnosis). METHODS: Five hundred two patients with an ARVC/D diagnosis from Johns Hopkins and Utrecht Registries were studied and long-term clinical outcomes ascertained...
June 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28195383/the-morphological-ultrasound-types-known-as-blob-and-bagel-signs-should-be-reclassified-from-probable-to-definite-ectopic-pregnancy
#15
Batool Nadim, Fernando Infante, Chuan Lu, Nalayini Sathasivam, George Condous
OBJECTIVES: In a recent consensus statement on early pregnancy nomenclature by Barnhart 2011, a definite ectopic pregnancy(EP) was defined morphologically on transvaginal ultrasound (TVS) as an extra-uterine gestational sac(GS) with yolk sac and/or embryo(with or without cardiac activity) whilst a probable EP defined as an inhomogeneous adnexal mass("blob" sign) or extra-uterine sac-like structure("bagel" sign). This study aims to determine whether the ultrasound markers used to define probable EP can be used to predict a definite tubal EP...
February 13, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28191656/utility-and-safety-of-combined-interventional-catheterization-and-electrophysiology-procedures-in-a-children-s-hospital
#16
S Yukiko Asaki, Jeffrey W Orcutt, Christina Y Miyake, Henri Justino, Caridad M de la Uz, Jeffrey J Kim, Santiago O Valdes, Athar M Qureshi
BACKGROUND: Interventional cardiac catheterization (cath) and electrophysiology (EP) procedures are not routinely performed together. There are several perceived barriers affecting this practice, though there are also advantages for both the patient and practitioner to a combined approach. METHODS: This was a single-center retrospective study reviewing combined cath and EP procedures with a preprocedural intention to intervene at Texas Children's Hospital from 2001 to 2014...
February 13, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28191635/the-role-of-epicardial-adipose-tissue-in-cardiac-biology-classic-concepts-and-emerging-roles
#17
Alexios S Antonopoulos, Charalambos Antoniades
Classic concepts about the role of epicardial adipose tissue (EpAT) in heart physiology include its role in cardiac metabolism, mechanical protection of coronaries, innervation and possibly cryoprotection of the heart too. Nevertheless, recent evidence has revealed that epicardial adipose tissue regulates multiple aspects of cardiac biology including myocardial redox state, intracellular Ca(2+) cycling, the electrophysiological and contractile properties of cardiomyocytes, cardiac fibrosis as well as coronary atherosclerosis progression...
June 15, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28146452/validation-of-a-high-fidelity-electrophysiology-simulator-and-development-of-a-proficiency-based-simulator-training-program
#18
Waqas Ullah, Ross J Hunter, Malcolm Finlay, Mark J Earley, Ailsa McLean, Raffaella Marazzi, Roberto De Ponti, Richard J Schilling
INTRODUCTION: Simulator training can potentially provide high-intensity training in electrophysiology (EP) without compromising patient safety. We assessed the construct validity of a novel EP simulator (ANGIO Mentor; Simbionix) and developed proficiency-based scores for clinical EP simulator training. METHODS: Two European training centers participated. Participants were grouped on the basis of years of EP experience and (for a subset) subjectively scored clinical catheter manipulation skills...
February 2017: Simulation in Healthcare: Journal of the Society for Simulation in Healthcare
https://www.readbyqxmd.com/read/28113394/4d-ice-a-2d-array-transducer-with-integrated-asic-in-a-10-fr-catheter-for-real-time-3d-intracardiac-echocardiography
#19
Douglas Wildes, Warren Lee, Bruno Haider, Scott Cogan, Krishnakumar Sundaresan, David Mills, Christopher Yetter, Patrick Hart, Christopher Haun, Mikael Concepcion, Johan Kirkhorn, Marc Bitoun
We developed a 2.5 x 6.6 mm 2D array transducer with integrated transmit/receive ASIC for 4D ICE (real-time 3D IntraCardiac Echocardiography) applications. The ASIC and transducer design were optimized so that the high voltage transmit, low-voltage TGC (time-gain control) and preamp, subaperture beamformer, and digital control circuits for each transducer element all fit within the 0.019 mm2 area of the element. The transducer assembly was deployed in a 10 Fr (3.3 mm diameter) catheter, integrated with a GE Vivid1 E9 ultrasound imaging system, and evaluated in three pre-clinical studies...
October 12, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28113292/non-invasive-personalisation-of-a-cardiac-electrophysiology-model-from-body-surface-potential-mapping
#20
Sophie Giffard-Roisin, Thomas Jackson, Lauren Fovargue, Jack Lee, Herve Delingette, Reza Razavi, Nicholas Ayache, Maxime Sermesant
Modelling cardiac electrophysiology (EP) can help understand pathologies and predict the response to therapies. Moreover, estimating patient-specific parameters of the EP model is crucial to obtain personalised information. The novelty of this paper is to use non-invasive data (body surface potential mapping, BSPM) in order to personalise the main parameters of a cardiac EP model for predicting different pacing conditions. First, an efficient forward model is proposed, coupling the Mitchell- Schaeffer transmembrane potential model with a current dipole formulation...
November 16, 2016: IEEE Transactions on Bio-medical Engineering
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