keyword
MENU ▼
Read by QxMD icon Read
search

Catheter Mapping

keyword
https://www.readbyqxmd.com/read/29790192/spontaneous-scar-based-reentrant-atrial-flutter-electrophysiologic-characteristics-and-ablation-outcome-in-a-retrospective-analysis
#1
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/29784681/use-of-intracardiac-echocardiography-in-interventional-cardiology-working-with-the-anatomy-rather-than-fighting-it
#2
REVIEW
Andres Enriquez, Luis C Saenz, Raphael Rosso, Frank E Silvestry, David Callans, Francis E Marchlinski, Fermin Garcia
The indications for catheter-based structural and electrophysiological procedures have recently expanded to more complex scenarios, in which an accurate definition of the variable individual cardiac anatomy is key to obtain optimal results. Intracardiac echocardiography (ICE) is a unique imaging modality able to provide high-resolution real-time visualization of cardiac structures, continuous monitoring of catheter location within the heart, and early recognition of procedural complications, such as pericardial effusion or thrombus formation...
May 22, 2018: Circulation
https://www.readbyqxmd.com/read/29784487/localization-of-ventricular-arrhythmias-for-catheter-ablation-the-role-of-surface-electrocardiogram
#3
REVIEW
Domenico Giovanni Della Rocca, Carola Gianni, Sanghamitra Mohanty, Chintan Trivedi, Luigi Di Biase, Andrea Natale
The surface ECG is a valuable mapping tool in patients with idiopathic and scar-related ventricular arrhythmias (VAs). A detailed analysis of 12-lead ECG can provide useful information in localizing the VA site of origin. This might help tailoring the ablation strategy to optimize procedural duration, increase the probability of success, and prevent complications. The aim of this article is to review the ECG features of both idiopathic and scar-related VAs and discuss their potential implications for optimizing the ablation strategy...
June 2018: Cardiac Electrophysiology Clinics
https://www.readbyqxmd.com/read/29782689/common-and-distinctive-electrocardiographic-characteristics-and-effective-catheter-ablation-of-idiopathic-ventricular-arrhythmias-originating-from-different-areas-of-ventricular-septum-adjacent-to-atrioventricular-annulus
#4
Su-Qin Zhang, Cheng Zheng, Yue-Chun Li, Kang-Ting Ji, Ri-Peng Yin, Jia-Feng Lin, Jia Li
OBJECTIVE: To investigate electrocardiographic (ECG) characteristics and radiofrequency catheter ablation (RFCA) efficacy for premature ventricular complexes (PVCs) and idiopathic ventricular tachycardias (IVTs) originating from ventricular septum areas adjacent to atrioventricular annulus (VS-AVA). METHODS: Among 1505 consecutive PVCs/IVTs cases, 106 (7.04%) were confirmed as origin of VS-AVA guided by both fluoroscopy and three-dimensional mapping system during RFCA...
May 21, 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29778240/the-autonomic-neural-mechanism-of-right-ventricular-outflow-tract-tachycardia
#5
Hung-Yu Chang, Li-Wei Lo, Yu-Ruey Chen, Yu-Hui Chou, Wei-Lun Lin, Yenn-Jiang Lin, Wei-Hsian Yin, An-Ning Feng, Shih-Ann Chen
BACKGROUND: Ventricular tachycardia (VT) and ventricular premature complexes (VPCs) originating from the right ventricular outflow tract (RVOT) are generally considered as benign arrhythmias, with ECG morphology showing LBBB pattern and inferior axis. Pathogenic mechanisms in the genesis of RVOT VT/VPC remain largely unknown. We aimed to investigate the neural mechanism in RVOT ventricular arrhythmias in canine model. METHODS: Twelve mongrel dogs (13.7 ± 1...
July 2018: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/29771718/evaluation-of-drug-effects-on-cerebral-blood-flow-and-glucose-uptake-in-un-anesthetized-and-un-stimulated-rats-application-of-free-moving-apparatus-enabling-to-keep-rats-free-during-pet-spect-tracer-injection-and-uptake
#6
Taku Sugita, Yusuke Kondo, Seigo Ishino, Ikuo Mori, Takashi Horiguchi, Mikako Ogawa, Yasuhiro Magata
OBJECTIVES: The purpose of this study is the development of novel fluorine-18-fluorodeoxyglucose (F-FDG)-PET and Tc-hexamethylpropylene amine oxime (HMPAO) SPECT methods with free-moving apparatus on conscious rats to investigate brain activity without the effects of anesthesia and tactual stimulation. We also assessed the sensitivity of the experimental system by an intervention study using fluoxetine as a reference drug. MATERIALS AND METHODS: A catheter was inserted into the femoral vein and connected to a free-moving cannula system...
May 15, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29759785/manual-versus-robotic-catheter-ablation-for-the-treatment-of-atrial-fibrillation-the-man-and-machine-trial
#7
Andreas Rillig, Boris Schmidt, Luigi Di Biase, Tina Lin, Leonie Scholz, Christian H Heeger, Andreas Metzner, Daniel Steven, Peter Wohlmuth, Stephan Willems, Chintan Trivedi, Joseph G Galllinghouse, Andrea Natale, Feifan Ouyang, Karl-Heinz Kuck, Roland Richard Tilz
OBJECTIVES: Circumferential pulmonary vein isolation (CPVI) using irrigated radiofrequency is the most frequently used ablation technique for the treatment of atrial fibrillation worldwide. BACKGROUND: To date, no large randomized multicenter trials have evaluated the efficacy and safety of CPVI using robotic navigation (RN) systems compared with the current gold standard of manual ablation (MN). METHODS: In this prospective, international multicenter noninferiority trial, 258 patients with paroxysmal or persistent atrial fibrillation were randomized for CPVI using either RN (RN group, n = 131) or manual ablation (MN group, n = 127)...
August 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759784/atrial-tachycardias-after-surgical-atrial-fibrillation-ablation-clinical-characteristics-electrophysiological-mechanisms-and-ablation-outcomes-from-a-large-multicenter-study
#8
Rakesh Gopinathannair, Philip L Mar, Muhammad Rizwan Afzal, Luigi Di Biase, Yixi Tu, Thanmay Lakkireddy, Jaimin R Trivedi, Mark S Slaughter, Andrea Natale, Dhanunjaya Lakkireddy
OBJECTIVES: The clinical characteristics, electrophysiological mechanisms, and ablation outcomes of post-surgical atrial fibrillation ablation (SAFA) atrial tachycardias (ATs) have not been studied in a large, multicenter cohort. BACKGROUND: ATs are often seen following SAFA. METHODS: Analysis was performed on 137 patients (age, 62 ± 10 years; 74% male) who underwent catheter ablation for symptomatic post-SAFA AT from 2004 to 2013 at 3 high-volume institutions in the United States...
August 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759722/new-insights-into-an-old-arrhythmia-high-resolution-mapping-demonstrates-conduction-and-substrate-variability-in-right-atrial-macro-re-entrant-tachycardia
#9
Bhupesh Pathik, Geoffrey Lee, Frédéric Sacher, Pierre Jaïs, Grégoire Massoullié, Nicolas Derval, Matthew G Bates, Jonathan Lipton, Stephen Joseph, Joseph Morton, Paul Sparks, Peter Kistler, Jonathan M Kalman
OBJECTIVES: Using high-resolution 3-dimensional (3D) mapping, the aim of this study was to further characterize right atrial macro-re-entrant tachycardias and answer unresolved questions in the understanding of this arrhythmia. BACKGROUND: Despite advances in understanding of the mechanisms of right atrial macro-re-entrant tachycardias, many questions lack definitive answers. The advent of high-resolution 3D mapping provides an opportunity to gain further insights into the nature of these common circuits...
September 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759543/long-term-outcomes-of-catheter-ablation-of-electrical-storm-in-nonischemic-dilated-cardiomyopathy-compared-with-ischemic-cardiomyopathy
#10
Daniele Muser, Jackson J Liang, Rajeev K Pathak, Silvia Magnani, Simon A Castro, Tatsuya Hayashi, Fermin C Garcia, Gregory E Supple, Michael P Riley, David Lin, Sanjay Dixit, Erica S Zado, David S Frankel, David J Callans, Francis E Marchlinski, Pasquale Santangeli
OBJECTIVES: The goal of this study was to determine the long-term outcomes of catheter ablation (CA) of electrical storm in patients with nonischemic dilated cardiomyopathy (NIDCM) compared with patients with ischemic cardiomyopathy (ICM). BACKGROUND: CA of ventricular tachycardia (VT) electrical storm has been shown to improve VT-free survival in patients with ICM. Data on the outcomes of CA of electrical storm in patients with NIDCM are insufficient. METHODS: The study included 267 consecutive patients with NIDCM (n = 71; ejection fraction 32 ± 14%) and ICM (n = 196; ejection fraction 28 ± 12%)...
July 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759537/real-time-localization-of-ventricular-tachycardia-origin-from-the-12-lead-electrocardiogram
#11
John L Sapp, Meir Bar-Tal, Adam J Howes, Jonathan E Toma, Ahmed El-Damaty, James W Warren, Paul J MacInnis, Shijie Zhou, B Milan Horáček
OBJECTIVES: The aim of this study was to develop rapid computational methods for identifying the site of origin of ventricular activation from the 12-lead electrocardiogram. BACKGROUND: Catheter ablation of ventricular tachycardia in patients with structural heart disease frequently relies on a substrate-based approach, which may use pace mapping guided by body-surface electrocardiography to identify culprit exit sites. METHODS: Patients undergoing ablation of scar-related VT (n = 38) had 12-lead electrocardiograms recorded during pacing at left ventricular endocardial sites (n = 1,012) identified on 3-dimensional electroanatomic maps and registered to a generic left ventricular endocardial surface divided into 16 segments and tessellated into 238 triangles; electrocardiographic data were reduced for each lead to 1 variable, consisting of QRS time integral...
July 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759536/value-of-a-posterior-electrocardiographic-lead-for-localization-of-ventricular-outflow-tract-arrhythmias-the-v-4-v-8-ratio
#12
Fengxiang Zhang, David Hamon, Zhen Fang, Yan Xu, Bing Yang, Weizhu Ju, Jason Bradfield, Kalyanam Shivkumar, Minglong Chen, Roderick Tung
OBJECTIVES: This study sought to prospectively evaluate the value of a dedicated electrocardiographic posterior lead to create an anteroposterior ratio to localize premature ventricular complexes (PVCs) between the right ventricular outflow tract and left ventricular outflow tract for catheter ablation. BACKGROUND: The anteroposterior relationship between the right and left outflow tract has not been explored for electrocardiographic localization of ventricular arrhythmia...
July 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29753943/characterization-of-drivers-maintaining-atrial-fibrillation-correlation-with-markers-of-rapidity-and-organization-on-spectral-analysis
#13
Shohreh Honarbakhsh, Richard J Schilling, Rui Providencia, Emily Keating, Anthony Chow, Simon Sporton, Martin Lowe, Mark J Earley, Pier D Lambiase, Ross J Hunter
BACKGROUND: Better characterization of drivers in atrial fibrillation (AF) may facilitate their identification. OBJECTIVES: Demonstrate that certain driver characteristics are associated with greater mechanistic importance in maintaining AF. METHODS: Patients had persistent AF mapped using the CARTOFINDER system with a 64-pole basket catheter to identify and ablate drivers with rotational or focal activity following pulmonary vein isolation...
April 19, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29753180/a-work-flow-to-build-and-validate-patient-specific-left-atrium-electrophysiology-models-from-catheter-measurements
#14
Cesare Corrado, Steven Williams, Rashed Karim, Gernot Plank, Mark O'Neill, Steven Niederer
Biophysical models of the atrium provide a physically constrained framework for describing the current state of an atrium and allow predictions of how that atrium will respond to therapy. We propose a work flow to simulate patient specific electrophysiological heterogeneity from clinical data and validate the resulting biophysical models. In 7 patients, we recorded the atrial anatomy with an electroanatomical mapping system (St Jude Velocity); we then applied an S1-S2 electrical stimulation protocol from the coronary sinus (CS) and the high right atrium (HRA) whilst recording the activation patterns using a PentaRay catheter with 10 bipolar electrodes at 12 ± 2 sites across the atrium...
April 27, 2018: Medical Image Analysis
https://www.readbyqxmd.com/read/29747127/wideband-lge-mri-permits-unobstructed-viewing-of-myocardial-scarring-in-a-patient-with-an-mr-conditional-subcutaneous-implantable-cardioverter-defibrillator
#15
Amir Ali Rahsepar, Jeremy D Collins, Bradley P Knight, KyungPyo Hong, James C Carr, Daniel Kim
A subcutaneous implantable cardioverter-defibrillator (S-ICD) is an alternative device for prevention of sudden cardiac death, without any leads within the heart. Patients implanted with any type of ICD may need catheter ablation of ventricular tachycardia (VT) to reduce the overall arrhythmia burden (e.g., recurrent monomorphic VT) and lower the incidence of painful shocks induced by the device. Late gadolinium enhancement (LGE) MRI is a useful pre-test for guiding VT ablation, because it can be used to map myocardial scar and produce better outcomes...
May 4, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29739749/prevalence-of-central-vein-stenosis-in-patients-referred-for-vein-mapping
#16
Fasika M Tedla, Guerrier Clerger, Dale Distant, Moro Salifu
BACKGROUND AND OBJECTIVES: Central vein stenosis is considered to be common in patients on hemodialysis but its exact prevalence is not known. In this study, we report the prevalence of central vein stenosis in patients with CKD referred for vein mapping. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: We conducted a retrospective study of adult patients who had bilateral upper extremity venographic vein mapping from September 1, 2011 to December 31, 2015. Patients with and without stenosis were compared for differences in clinical or demographic characteristics...
May 8, 2018: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/29736557/the-seamless-integration-of-three-dimensional-rotational-angiography-images-into-electroanatomical-mapping-systems-to-guide-catheter-ablation-of-atrial-fibrillation
#17
Satoshi Fujita, Eitaro Fujii, Yoshihiko Kagawa, Katsuhiro Inoue, Tsuyoshi Yamada, Masaaki Ito
It is important to visually confirm radiofrequency ablation lesions during atrial fibrillation (AF) ablation for procedural efficiency, which requires the integration of a three-dimensional (3D) left atrial image reconstructed from computed tomography (CT) or a magnetic resonance imaging. However, an EP Navigator allows seamless integration of 3D anatomy obtained through 3D rotational angiography (3D-ATG) into an electroanatomical mapping system. We hypothesized that 3D-ATG can be used during AF ablation while significantly reducing the effective dose (ED) and without compromising image morphology compared to a 3D-CT image...
May 7, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29734257/noninvasive-measures-of-pulsatility-and-blood-pressure-during-continuous-flow-left-ventricular-assist-device
#18
Sabarivinoth Rangasamy, Shivank Madan, Omar Saeed, Daniel J Goldstein, Ulrich P Jorde, Abdissa Negassa, Snehal R Patel
The reliability and validity of a palpable pulse and other noninvasive measures of pulsatility in patients on continuous-flow (CF) left ventricular assist device (LVAD) support have not been rigorously evaluated. We prospectively enrolled 23 patients who had CF-LVAD and an arterial catheter for blood pressure (BP) monitoring. Pulse pressure (PP) via the arterial line was compared with three noninvasive measures of pulsatility: presence of a palpable pulse, pulsatility index (PI), and aortic valve opening (AVO)...
April 19, 2018: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29730348/epicardial-intraoperative-3-d-mapping-of-wolff-parkinson-white-in-a-child-with-ebstein-s-anomaly
#19
James C Perry, Andras Bratincsak, Suzanne Shepard, Matthew R Williams, Joseph Loslo, Raghav Murthy, John J Lamberti
Catheter ablation of arrhythmias in small patients has inherent significant risk due to patient, catheter, and lesion size. Heart block, perforation and coronary damage may occur. This report shows adaptation of a 3-D electroanatomic mapping system for intraoperative use in a small patient with Ebstein's anomaly undergoing Cone procedure and bidirectional Glenn. Use of this technique gave clear identification of the epicardial insertion points of two accessory pathways causing Wolff-Parkinson-White and resistant episodes of supraventricular tachycardia...
May 3, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29724033/force-trends-and-pulsatility-for-catheter-contact-identification-in-intracardiac-electrograms-during-arrhythmia-ablation
#20
David Rivas-Lalaleo, Sergio Muñoz-Romero, Mónica Huerta, Mayra Erazo-Rodas, Juan José Sánchez-Muñoz, José Luis Rojo-Álvarez, Arcadi García-Alberola
The intracardiac electrical activation maps are commonly used as a guide in the ablation of cardiac arrhythmias. The use of catheters with force sensors has been proposed in order to know if the electrode is in contact with the tissue during the registration of intracardiac electrograms (EGM). Although threshold criteria on force signals are often used to determine the catheter contact, this may be a limited criterion due to the complexity of the heart dynamics and cardiac vorticity. The present paper is devoted to determining the criteria and force signal profiles that guarantee the contact of the electrode with the tissue...
May 2, 2018: Sensors
keyword
keyword
107346
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"