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https://www.readbyqxmd.com/read/29792384/percutaneous-leadless-pacemaker-implantation-in-a-patient-with-bilateral-venous-thoracic-outlet-syndrome
#1
Niek Eg Beurskens, Fleur Vy Tjong, Reinoud E Knops, Ron Jg Peters
No abstract text is available yet for this article.
May 1, 2018: Journal of Vascular Access
https://www.readbyqxmd.com/read/29791840/dynamic-cellular-integration-drives-functional-assembly-of-the-heart-s-pacemaker-complex
#2
Michael Bressan, Trevor Henley, Jonathan D Louie, Gary Liu, Danos Christodoulou, Xue Bai, Joan Taylor, Christine E Seidman, J G Seidman, Takashi Mikawa
Impulses generated by a multicellular, bioelectric signaling center termed the sinoatrial node (SAN) stimulate the rhythmic contraction of the heart. The SAN consists of a network of electrochemically oscillating pacemaker cells encased in a heterogeneous connective tissue microenvironment. Although the cellular composition of the SAN has been a point of interest for more than a century, the biological processes that drive the tissue-level assembly of the cells within the SAN are unknown. Here, we demonstrate that the SAN's structural features result from a developmental process during which mesenchymal cells derived from a multipotent progenitor structure, the proepicardium, integrate with and surround pacemaker myocardium...
May 22, 2018: Cell Reports
https://www.readbyqxmd.com/read/29790579/extrathoracic-subclavian-axillary-vein-location-and-morphological-features-over-the-first-rib-for-pacemaker-and-defibrillator-lead-implantation
#3
Veysel Kutay Vurgun, Basar Candemir, Demet Menekse Gerede, Huseyin Goksuluk, Ali Timucin Altin, Omer Akyurek, Cetin Erol
BACKGROUND: We aimed to describe the variations of extrathoracic subclavian-axillary vein location and its morphology over the first rib by venography in order to facilitate venous puncture using fluoroscopic landmarks without contrast venography, and evaluate the success rate of punctures, which made with our method. METHODS: Patients who had undergone de novo lead implantation with help of pre-puncture venography between 2011 and 2015 were enrolled. For detection of the segmental location of the axillary vein, the zones were defined (Zone 1: Posterior, Zone 2:Lateral, Zone 3:Medial) at the first rib by fluoroscopy...
May 23, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29790192/spontaneous-scar-based-reentrant-atrial-flutter-electrophysiologic-characteristics-and-ablation-outcome-in-a-retrospective-analysis
#4
Lei Sen, Fengpeng Jia, Quan He, Lingyun Gao, Suxin Luo, Han Lei, Dennis W X Zhu
BACKGROUND: The understanding of spontaneous scar based reentrant atrial arrhythmia is limited. We aim to characterize the electrophysiologic and mapping features of spontaneous scar based atrial flutter (AFL) and outcomes of catheter ablation. METHODS: Consecutive patients with a diagnosis of AFL who underwent catheter ablation from Jan 2012 to Jun 2015 were screened. Scars were detected in 12 patients and were included in this study. All had negative coronary angiography...
May 23, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29790185/a-combined-epicardial-implantation-and-subsequent-extraction-strategy-in-pacemaker-device-infection-in-pacemaker-dependent-patients
#5
Floris S van den Brink, Vincent F van Dijk, Lucas Va Boersma, Maurtis Cef Wijffels, John Gelissen, Edgar Daeter, Uday Sonker, Jippe Balt
INTRODUCTION: Treatment of pacemaker (PM) device infections is challenging in pacemaker dependent patients. We propose a novel implantation strategy for this group of patients. METHODS: Patients who were PM dependent and were admitted with a PM infection received a combined procedure of LV epicardial implantation of a PM lead and subsequent extraction of the infected system. No temporary pacing wire was used and the PM generator was placed in the left flank. RESULTS: Between 2012 and 2015 we treated 16 patients who were PM dependent with a PM infection...
May 23, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29787427/impact-of-ionizing-radiation-on-electrophysiological-behavior-of-human-induced-ipsc-derived-cardiomyocytes-on-multielectrode-arrays
#6
Benjamin V Becker, Thomas Seeger, Thomas Beiert, Markus Antwerpen, Andreas Palnek, Matthias Port, Reinhard Ullmann
Cardiac arrhythmia presumably induced through cardiac fibrosis is a recurrent long-term consequence of exposure to ionizing radiation. However, there is also evidence that cardiac arrhythmia can occur in patients shortly after irradiation. In this study, the authors employed multielectrode arrays to investigate the short-term effects of x-ray radiation on the electrophysiological behavior of cardiomyocytes derived from human-induced pluripotent stem cells. These cardiomyocytes with spontaneous pacemaker activity were cultured on single-well multielectrode arrays...
July 2018: Health Physics
https://www.readbyqxmd.com/read/29785752/skin-lesions-over-the-pocket-area-that-may-mimic-cardiac-implantable-electronic-device-infection-a-case-series
#7
Panagiotis Korantzopoulos, Sofia Plakoutsi, Elizabeth Florou, Aris Bechlioulis
BACKGROUND: The early and correct diagnosis of cardiac implantable electronic device (CIED) infections is critical given that early aggressive treatment with complete removal of the system along with antimicrobial therapy dramatically improves outcomes. Pocket infection manifested by local signs of inflammation is the most common form of CIED infections. Conditions mimicking pocket infection have been described in the literature. These include various types of malignancy and rarely allergic reactions/contact dermatitis to pacemaker compounds...
May 21, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29785213/a-case-series-and-review-of-bacillus-cereus-endocarditis-from-india
#8
Anusha Gopinathan, Anil Kumar, Amitabh C Sen, Srisruthy Sudha, Praveen Varma, Sunil Gs, Malini Eapen, Kavitha R Dinesh
Introduction: Bacillus cereus is a gram positive bacilli found commonly in the soil and environment. It is a bacteria rarely associated with endocarditis. Case History: Intravenous drug abuse, presence of valvular defects, pacemakers, immunodeficiency are some of the known risk factors for B.cereus endocarditis. We present here a case series of two patients with B.cereus endocarditis along with a review of the literature. Conclusion: This is the first report of B...
2018: Open Microbiology Journal
https://www.readbyqxmd.com/read/29784491/neonatal-and-pediatric-arrhythmias-clinical-and-electrocardiographic-aspects
#9
REVIEW
Fabrizio Drago, Irma Battipaglia, Corrado Di Mambro
Arrhythmias have acquired a specific identity in pediatric cardiology, but for pediatric cardiologists it has always been difficult to recognize and treat them. Changes in anatomy and physiology result in electrocardiogram features that differ from the normal adult pattern and vary according to the age of the child. Sinus arrhythmia, ectopic atrial rhythm, "wandering pacemaker," and junctional rhythm can be normal characteristics in children (15%-25% of healthy children can have these rhythms on the electrocardiogram)...
June 2018: Cardiac Electrophysiology Clinics
https://www.readbyqxmd.com/read/29784482/role-of-surface-electrocardiograms-in-patients-with-cardiac-implantable-electronic-devices
#10
REVIEW
Emanuela T Locati, Giuseppe Bagliani, Alessio Testoni, Maurizio Lunati, Luigi Padeletti
Surface electrocardiograms, both resting 12-lead electrocardiographs and ambulatory electrocardiograph monitoring, play an essential role in establishing indications for cardiac implantable electronic devices (pacemakers, cardiac implantable defibrillators, and cardiac resynchronization therapies), and in the evaluation of patients already implanted. Current devices have prolonged memory capabilities (defined as Holter functions) and remote monitoring functions, to evaluate the electrical properties and the automatic detection of arrhythmias...
June 2018: Cardiac Electrophysiology Clinics
https://www.readbyqxmd.com/read/29782284/-magnetic-resonance-imaging-in-patients-with-implantable-devices-for-treatment-of-disturbed-heart-rhythm-review-of-the-current-situation
#11
A A Sviridova
The question of the possibility of MRI scanning in patients with cardiac implantable electronic devices (CIED) appeared simultaneously with the introduction of MRI in clinical practice. A lot of in-vitro, in-vivo and clinical researches were performed to estimate wat going on with CIED in strong magnetic field and is it possible to perform some unified protocol of safe MRI-scanning for these patients. Recommendations were provided, but not for the wide practice. MRI remained strongly contraindicated for CIED patient...
2018: Kardiologiia
https://www.readbyqxmd.com/read/29781515/remaining-longevity-and-evidence-of-failure-of-cardiac-implantable-electrophysiology-devices-recovered-from-funeral-homes
#12
David Laslett, Ralph J Verdino, James N Kirkpatrick
BACKGROUND: Given the prohibitive cost of pacemakers and defibrillators for medically underserved patients in low-income countries, these devices are sometimes recovered from funeral homes for charitable re-implantation. Many devices are implanted near the end of the patients' lives, meaning that recovered devices from funeral homes have the potential for significant remaining longevity. METHODS: After sending letters asking funeral directors in the Philadelphia area to donate explanted pacemakers and defibrillators, 78 devices were recovered...
May 21, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29781182/valve-in-valve-transcatheter-aortic-valve-implantation-viv-tavi-versus-redo-surgical-aortic-valve-replacement-redo-savr-a-systematic-review-and-meta-analysis
#13
REVIEW
Nikhil Nalluri, Varunsiri Atti, Abdullah B Munir, Boutros Karam, Nileshkumar J Patel, Varun Kumar, Praveen Vemula, Susruth Edla, Deepak Asti, Amrutha Paturu, Sriramya Gayam, Jonathan Spagnola, Emad Barsoum, Gregory A Maniatis, Frank Tamburrino, Ruben Kandov, James Lafferty, Chad Kliger
BACKGROUND: Bioprosthetic (BP) valves have been increasingly used for aortic valve replacement over the last decade. Due to their limited durability, patients presenting with failed BP valves are rising. Valve in Valve - Transcatheter Aortic Valve Implantation (ViV-TAVI) emerged as an alternative to the gold standard redo-Surgical Aortic Valve Replacement (redo-SAVR). However, the utility of ViV-TAVI is poorly understood. METHODS: A systematic electronic search of the scientific literature was done in PubMed, EMBASE, SCOPUS, Google Scholar, and ClinicalTrials...
May 20, 2018: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/29780151/a-leadless-pacemaker-which-became-encapsulated-only-two-months-after-placement
#14
Taijyu Satoh, Akio Fukui, Shigehiko Katoh, Motoyuki Matsui
No abstract text is available yet for this article.
May 18, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29779988/leadless-pacemaker-implantation-in-a-transplanted-heart
#15
José Luis Martínez-Sande, Javier García-Seara, Laila González-Melchor, Moisés Rodríguez-Mañero, Inés Gómez-Otero, José Ramón González-Juanatey
No abstract text is available yet for this article.
May 17, 2018: Revista Española de Cardiología
https://www.readbyqxmd.com/read/29779871/non-canonical-phototransduction-mediates-synchronization-of-the-drosophila-melanogaster-circadian-clock-and-retinal-light-responses
#16
Maite Ogueta, Roger C Hardie, Ralf Stanewsky
The daily light-dark cycles represent a key signal for synchronizing circadian clocks. Both insects and mammals possess dedicated "circadian" photoreceptors but also utilize the visual system for clock resetting. In Drosophila, circadian clock resetting is achieved by the blue-light photoreceptor cryptochrome (CRY), which is expressed within subsets of the brain clock neurons. In addition, rhodopsin-expressing photoreceptor cells contribute to light synchronization. Light resets the molecular clock by CRY-dependent degradation of the clock protein Timeless (TIM), although in specific subsets of key circadian pacemaker neurons, including the small ventral lateral neurons (s-LNvs), TIM and Period (PER) oscillations can be synchronized by light independent of CRY and canonical visual Rhodopsin phototransduction...
April 30, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29779529/inhibition-and-restoration-of-crt-pacing-what-is-the-mechanism
#17
Andrzej Ząbek, Barbara Małecka, Maciej Dębski, Krzysztof Boczar, Katarzyna Holcman, Mateusz Ulman, Jacek Lelakowski
The electrocardiogram (ECG) interpretation in patients with cardiac resynchronization therapy (CRT) may be challenging. The difficulty increases if not well-known pacemaker algorithm is turned on. We show a T-wave protection algorithm (LVTP) in a patient with CRT. Accelerated sinus rhythm and intermittent oversensing in left ventricular channel resulted in loss of CRT pacing. The restoration of biventricular pacing occurred when atrial rate decreased. We provide detailed descriptions of the electrocardiogram and intracardiac electrogram...
May 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29779524/inappropriate-automatic-mode-switching-episodes-what-s-the-mechanism
#18
Juan Benezet-Mazuecos, José Antonio Iglesias, Juan José de la Vieja, Angel Miracle, Pepa Sanchez-Borque, José Manuel Rubio
We present a case series of five patients reporting abnormal automatic mode switching (AMS) episodes during routinary cardiac defibrillator (ICD) and pacemaker (PM) follow-up. This non-previously described phenomenon was reported to St. Jude Medical (Abbott) Technical Support that confirmed the inappropriate automatic mode switching.
May 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29779297/cardiac-rhythm-management-devices
#19
Irene Stevenson, Alex Voskoboinik
BACKGROUND: The last decade has seen ongoing evolution and use of cardiac rhythm management devices, including pacemakers, cardiac resynchronisation therapy, implantable cardioverter defibrillators and loop recorders. General practitioners are increasingly involved in follow-up and management of patients with these devices. OBJECTIVE: The aim of this article is to provide an overview of different cardiac rhythm management devices, including their role, implant procedure, post-procedural care, potential complications and follow‑up...
May 2018: Australian journal of general practice
https://www.readbyqxmd.com/read/29778924/cerbera-odollam-toxicity-a-review
#20
REVIEW
Ritesh G Menezes, Muhammad Shariq Usman, Syed Ather Hussain, Mohammed Madadin, Tariq Jamal Siddiqi, Huda Fatima, Pradhum Ram, Syed Bilal Pasha, S Senthilkumaran, Tooba Qadir Fatima, Sushil Allen Luis
Cerbera odollam is a plant species of the Apocynaceae family. It is often dubbed the 'suicide tree' due to its strong cardiotoxic effects, which make it a suitable means to attempt suicide. The plant grows in wet areas in South India, Madagascar, and Southeast Asia; and its common names include Pong-Pong and Othalanga. The poison rich part of the plant is the kernel which is present at the core of its fruit. The bioactive toxin in the plant is cerberin, which is a cardiac glycoside of the cardenolide class...
May 9, 2018: Journal of Forensic and Legal Medicine
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