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Catheter Mapping

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https://www.readbyqxmd.com/read/28928979/ablation-of-a-left-sided-accessory-pathway-with-near-zero-fluoroscopy-in-a-9-year-old-boy
#1
Gabriel Cismaru, Lucian Muresan, Mihai Puiu, Radu Rosu, Gabriel Gusetu, Dana Pop, Dumitru Zdrenghea
Catheter ablation of cardiac arrhythmias in pediatric population is associated with the risk of ionizing radiation on the child. Due to a greater radiation sensitivity in children and a longer life expectancy newer techniques try to reduce the radiation exposure. A new technique for zero-fluoroscopy catheter ablation is described in a 9-year-old boy who had a left-sided concealed accessory pathway. The NAVX Ensite 3D mapping system permits catheter placement inside the venous system and movement inside the heart chambers without the use of X-rays...
September 2017: Oxford Medical Case Reports
https://www.readbyqxmd.com/read/28927960/a-comparison-between-multipolar-mapping-and-conventional-mapping-of-atrial-tachycardias-in-the-context-of-atrial-fibrillation-ablation
#2
Sok-Sithikun Bun, Tahar Delassi, Decebal Gabriel Latcu, Mohammed El Jamili, Anis Ayari, Abdelkarim Errahmouni, Benjamin Berte, Nadir Saoudi
BACKGROUND: Activation mapping can be challenging and time-consuming in patients with multiple atrial tachycardias (ATs). AIMS: To compare multielectrode mapping using a dedicated mapping catheter - PentaRay (Biosense Webster Inc.) - and the conventional technique for mapping ATs in the context of atrial fibrillation (AF) ablation. METHODS: All procedures where PentaRay mapping of AT were used - after or during persistent AF ablation - were analysed...
September 15, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/28919593/electrocardiographic-algorithms-to-guide-a-management-strategy-of-idiopathic-outflow-tract-ventricular-arrhythmias
#3
Bartosz Ludwik, Karol Deutsch, Mariusz Mazij, Janusz Śledź, Aleksandra Morka, Michał Labus, Michał Chrabąszcz, Bartosz Szafran, Jerzy Śpikowski, Lesław Szydłowski, Sebastian M Stec
INTRODUCTION    The current guidelines of the European Society of Cardiology outlined electrocardiographic (ECG) differentiation of site of origin (SOO) in patients with idiopathic ventricular arrhythmias (IVA).  OBJECTIVES    The aim of this study was to compare three ECG algorithms for differentiating SOO and to determine their diagnostic value for the management of outflow tract IVA. PATIENTS AND METHODS    Patients with IVA with inferior axis who underwent successful radiofrequency catheter ablation (RFCA) using the 3D-electroanatomical system were analyzed...
September 6, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28917557/idiopathic-ventricular-arrhythmias-originating-from-the-right-coronary-sinus-prevalence-electrocardiographic-and-electrophysiologic-characteristics-and-catheter-ablation
#4
Yunlong Wang, Zhuo Liang, Shaoqin Wu, Zhihong Han, Xuejun Ren
BACKGROUND: Ventricular arrhythmias (VAs) of right coronary cusp (RCC) are not fully characterized. OBJECTIVES: To investigate the electrocardiographic and electrophysiologic characteristics, mapping and ablation of RCC-VAs. METHODS: Among 256 consecutive patients undergoing electrophysiologic evaluation and ablation of VAs of ventricular outflow tract origin, data were compared among 27 RCC-VAs, 50 VAs of the septal aspect of right ventricular outflow tract (RVOT, including from pulmonary artery) and 9 VAs of left coronary cusp (LCC)...
September 13, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28917555/incidence-and-significance-of-adhesions-encountered-during-epicardial-mapping-and-ablation-of-ventricular-tachycardia-in-patients-with-no-history-of-prior-cardiac-surgery-or-pericarditis
#5
Anthony Li, Eric Buch, Noel G Boyle, Kalyanam Shivkumar, Jason S Bradfield
BACKGROUND: Pericardial adhesions can prevent epicardial access and restrict catheter movement during mapping and ablation of ventricular tachycardia (VT) . The incidence of adhesions in patients without prior cardiac surgery or clinically evident pericarditis is not known. OBJECTIVE: To describe the incidence of pericardial adhesions in patients without prior cardiac surgery or pericarditis and explore their impact. METHODS: A retrospective search of our ablation database containing patients who underwent epicardial ablation for VT was undertaken...
September 13, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28917553/absence-of-rotational-activity-detected-using-two-dimensional-phase-mapping-in-corresponding-three-dimensional-phase-maps-in-human-persistent-atrial-fibrillation
#6
Bhupesh Pathik, Jonathan M Kalman, Tomos Walters, Pawel Kuklik, Jichao Zhao, Andrew Madry, Prashanthan Sanders, Peter M Kistler, Geoffrey Lee
BACKGROUND: Current phase mapping systems for atrial fibrillation(AF) create two-dimensional(2D) maps. This process may affect the accurate detection of rotors. We developed a three-dimensional(3D) phase mapping technique that utilizes the 3D locations of basket electrodes to project phase onto patient-specific left atrial(LA) 3D surface anatomy. OBJECTIVES: We sought to determine whether rotors detected in 2D phase maps were present at corresponding time segments and anatomical locations on 3D phase maps...
September 13, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28916535/spinal-cord-perfusion-pressure-predicts-neurologic-recovery-in-acute-spinal-cord-injury
#7
Jordan W Squair, Lise M Bélanger, Angela Tsang, Leanna Ritchie, Jean-Marc Mac-Thiong, Stefan Parent, Sean Christie, Christopher Bailey, Sanjay Dhall, John Street, Tamir Ailon, Scott Paquette, Nicolas Dea, Charles G Fisher, Marcel F Dvorak, Christopher R West, Brian K Kwon
OBJECTIVE: To determine whether spinal cord perfusion pressure (SCPP) as measured with a lumbar intrathecal catheter is a more predictive measure of neurologic outcome than the conventionally measured mean arterial pressure (MAP). METHODS: A total of 92 individuals with acute spinal cord injury were enrolled in this multicenter prospective observational clinical trial. MAP and CSF pressure (CSFP) were monitored during the first week postinjury. Neurologic impairment was assessed at baseline and at 6 months postinjury...
September 15, 2017: Neurology
https://www.readbyqxmd.com/read/28895163/off-the-pedal-fluoroless-transseptal-puncture-in-pediatric-supraventricular-tachycardia-ablation
#8
Bradley C Clark, Kohei Sumihara, Charles I Berul, Jeffrey P Moak
BACKGROUND: Fluoroless transseptal (TS) puncture may represent the final step towards elimination of fluoroscopy in pediatric supraventricular tachycardia ablation in normal hearts. We aimed to demonstrate the safety and feasibility of fluoroless TS puncture in pediatric patients and compare procedural timing with the fluoroscopic approach. METHODS: We performed a retrospective cohort analysis of all TS procedures performed without fluoroscopy at our institution; fluoroless TS procedures were performed under intracardiac echocardiography (ICE) guidance after creation of 3D electroanatomic map and identification of fossa ovalis on 3D map...
September 12, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28884872/the-tip-of-the-muscle-is-a-dominant-location-of-ventricular-ectopy-originating-from-papillary-muscles-in-the-left-ventricle
#9
Petr Peichl, Jakub Baran, Dan Wichterle, Robert Čihák, Tomáš Skála, Bashar Aldhoon, Matevž Jan, Bor Antolič, Josef Kautzner
INTRODUCTION: Frequent ventricular premature complexes (VPCs) may cause symptoms and/or lead to deterioration of LV systolic function. Although frequent VPCs may be abolished by catheter ablation, it may be challenging in case of their origin from the LV papillary muscles (PMs). Our collaborative study aimed to analyze in detail the site of origin and the outcome of ablation. METHODS: Consecutive 34 patients (males: 68%; aged 62±12 years; LV ejection fraction: 50±9%) undergoing catheter ablation of VPCs originating from PMs were included...
September 8, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28884868/a-novel-multielectrode-combined-mapping-and-ablation-basket-catheter-a-future-player-in-the-atrial-fibrillation-ablation-space
#10
EDITORIAL
J Paul Mounsey
No abstract text is available yet for this article.
September 8, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28883682/role-of-mri-in-diagnosis-of-ruptured-intracranial-dermoid-cyst
#11
Sefedin Muçaj, Mehmet Sahin Ugurel, Kreshnike Dedushi, Naser Ramadani, Naim Jerliu
INTRODUCTION: Intracranial dermoid cystic tumors account for <1% of all intracranial masses. CASE REPORT: A 52-year-old male, having headaches, nausea and is presented with a history of 2 episodes of new onset seizures. On presentation, the patient had a normal physical exam, including a complete neurological and cranial nerve exam. METHODS: Precontrast MRI; TSE/T2Wsequence in axial/coronal planes; 3D - HI-resolution T1W sagittal; FLAIR/T2W axial; FLAIR/T2W, Flash/T2W oblique coronal plane, GRE/T2W axial...
June 2017: Acta Informatica Medica: AIM
https://www.readbyqxmd.com/read/28881765/mitral-isthmus-ablation-using-a-circular-mapping-catheter-positioned-in-the-left-atrial-appendage-as-a-reference-for-conduction-block
#12
Takahiko Nishiyama, Takehiro Kimura, Taishi Fujisawa, Kazuaki Nakajima, Akira Kunitomi, Shin Kashimura, Yoshinori Katsumata, Nobuhiro Nishiyama, Yoshiyasu Aizawa, Keiichi Fukuda, Seiji Takatsuki
BACKGROUND: For perimitral atrial flutter (PMFL) developing after catheter ablation of atrial fibrillation (AF), to create a complete conduction block at the mitral isthmus (MI) is mandatory to terminate it, however, it is still challenging. METHODS: This study consisted of 80 patients (74 male, 61 ± 8.1 years) undergoing MI ablation. After a circular mapping catheter was positioned at the neck of the left atrial appendage (LAA), the MI ablation was performed on the MI line just below the LAA neck targeting the earliest activation recording site of the LAA catheter during pacing from the coronary sinus (CS)...
August 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28875448/clinical-outcomes-of-af-patients-treated-with-the-first-and-second-generation-of-circular-mapping-and-ablation-catheter-insights-from-a-real-world-multicenter-experience
#13
Giovanni Rovaris, Paolo De Filippo, Francesco Laurenzi, Gabriele Zanotto, Nicola Bottoni, Mattia Pozzi, Fabrizio Giofrè, Piergiuseppe De Girolamo, Emanuela Visentin, Elena Piazzi, Paola Ferrari
PURPOSE: Complete pulmonary vein isolation (PVI) is the best documented target for catheter ablation, and different technologies have shown comparable outcomes. The multielectrode phased-RF/duty cycled (PhRF/DC) pulmonary vein ablation catheter (PVAC) and its second generation (PVAC-GOLD) have shown promising clinical results in single and multicenter experiences. Our aim is to assess and compare the safety and efficacy in the real clinical practice among two generations of circular PhRF/DC catheters by performing PVI in patients suffering from recurrent atrial fibrillation (AF)...
September 5, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/28862806/initial-experience-of-a-novel-mapping-system-combined-with-remote-magnetic-navigation-in-the-catheter-ablation-of-atrial-fibrillation
#14
Changjian Lin, Steen Pehrson, Peter Karl Jacobsen, Xu Chen
BACKGROUND: There have been advancements of sophisticated mapping systems used for ablation procedures over the last decade. Utilization of these novel mapping systems in combination with remote magnetic navigation (RMN) needs to be established. We investigated the new EnSite Precisionۛ mapping system (St Jude Medical, Inc.), which collects magnetic data for checking navigation field stability and is built on an open platform, allowing physicians to choose diagnostic and ablation catheters...
September 1, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28862787/panoramic-atrial-mapping-with-basket-catheters-a-quantitative-analysis-to-optimize-practice-patient-selection-and-catheter-choice
#15
Shohreh Honarbakhsh, Richard J Schilling, Rui Providência, Gurpreet Dhillon, Vinit Sawhney, Claire A Martin, Emily Keating, Malcolm Finlay, Syed Ahsan, Anthony Chow, Mark J Earley, Ross J Hunter
INTRODUCTION: Panoramic mapping with basket catheters have been used to map atrial fibrillation (AF). However, the limited tissue contact and coverage achieved has raised concerns. METHODS AND RESULTS: Patients undergoing catheter ablation for atrial tachycardia (AT) and persistent AF were recruited. Unipolar signals were recorded with the Constellation or FIRMap catheters. The proportion and distribution of anatomical coverage by the catheters was determined and tissue contact achieved measured...
September 1, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28862408/benefits-of-electroanatomic-ablation-of-conventional-cardiac-arrhytmias-from-fluoroscopy-to-zero-x-ray-mapping
#16
Michela Casella, Valentina Ribatti, Valentina Catto, Giulia Vettor, Gaetano Fassini, Viviana Biagioli, Antonio Dello Russo, Claudio Tondo
Electrophysiology procedures are traditionally performed under fluoroscopic guidance. Nowadays a growing interest in the radiation risk associated to these procedures has been cultivated, since radiation exposure has non-neglegible stochastic and deterministic effects on health. A correlation between radiation exposure and lifetime malignancy effect is difficult to establish and the threshold of a completely safe exposure dose is unknown. Thus, electrophisiologists have become aware of the use of fluoroscopy and they have tried to use all the complementary imaging technologies available in order to reduce the radiological exposure...
August 31, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28861898/irrigated-tip-catheters-for-radiofrequency-ablation-of-right-sided-accessory-pathways-in-adolescents
#17
REVIEW
Marta Telishevska, Johannes Faelchle, Allessandra Buiatti, Sonia Busch, Tilko Reents, Felix Bourier, Verena Semmler, Bernhardt Kaess, Michaela Horndasch, Marielouise Kornmayer, Marc Kottmaier, Isabel Deisenhofer, Gabriele Hessling
BACKGROUND: Catheter ablation of right sided accessory pathways (AP) has lower success and higher recurrence rates compared to left-sided substrates. Irrigated-tip catheter (ITC) ablation might offer an advantage in this setting but data about its use in patients below 18 years is scarce. Aim of this study was to compare an ITC approach to conventional catheter ablation. METHODS: A retrospective analysis of all patients < 18 years undergoing radiofrequency ablation (RFA) for right-sided APs from 2004 to 2014 at our institution was performed...
September 1, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28856576/changes-in-transcranial-motor-evoked-potentials-during-hemorrhage-are-associated-with-increased-serum-propofol-concentrations
#18
Jeremy A Lieberman, John Feiner, Mark Rollins, Russ Lyon
Transcranial motor evoked potentials (TcMEPs) monitor the integrity of the spinal cord during spine surgery. Propofol-based anesthesia is favored in order to enhance TcMEP quality. During intraoperative hemorrhage, TcMEP amplitudes may be reduced. The serum concentration of propofol may increase during hemorrhage. No study has determined whether changes in TcMEPs due to hemorrhage are related to changes in propofol blood levels. We monitored TcMEPs, mean arterial pressure (MAP), and cardiac output (CO) and hemoglobin in pigs (n = 6) undergoing controlled progressive hemorrhage during a standardized anesthetic with infusions of propofol, ketamine, and fentanyl...
August 30, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28852442/cardiovascular-effects-of-nitrergic-system-of-the-pedunculopontine-tegmental-nucleus-in-anesthetized-rats
#19
Mohammad Naser Shafei, Tahereh Nikyar, Mahmoud Hosseini, Saeed Niazmand, Maryam Paseban
OBJECTIVES: Nitric oxide (NO) is an important neurotransmitter in central nervous system involved in central cardiovascular regulation. The presence of NO in the pedunculopontine tegmental (PPT) nucleus has been shown, but its cardiovascular effect has not been determined. In the present study, the cardiovascular effect of NO in the PPT nucleus was evaluated. MATERIALS AND METHODS: After induction of anesthesia, a polyethylene catheter (PE-50) filled with heparinized saline inserted into the femoral artery, and the blood pressure (BP) and heart rate (HR) were continuously recorded...
July 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28846147/cardiac-mapping-and-pulmonary-vein-isolation-using-a-novel-ablation-catheter-with-tip-mini-electrodes
#20
Florian Heringhaus, Tanja Lotz, Lena Loehr, Julia Gelep, Sebastian Lask, Kaffer Kara, Andreas Mügge, Alexander Wutzler
BACKGROUND: Pulmonary vein isolation (PVI) is a standard treatment for atrial fibrillation (AF). Identification of gaps in the ablation line is difficult. Tip-ring electrograms from ablation catheters represent relative large areas of myocardial tissue. Recently, an ablation catheter with three mini-electrodes (ME) on the catheter tip with closer interelectrode spacing was introduced. The aim of our study was to evaluate the novel electrodes during PVI. METHODS: PVI was performed with an irrigated ablation catheter equipped with conventional electrodes and three additional radial tip electrodes...
August 28, 2017: Pacing and Clinical Electrophysiology: PACE
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