keyword
MENU ▼
Read by QxMD icon Read
search

Contact force atrial

keyword
https://www.readbyqxmd.com/read/28515113/force-sensing-catheters-during-pediatric-radiofrequency-ablation-the-federation-study
#1
Aarti S Dalal, Hoang H Nguyen, Tammy Bowman, George F Van Hare, Jennifer N Avari Silva
BACKGROUND: Based on data from studies of atrial fibrillation ablations, optimal parameters for the TactiCath (TC; St. Jude Medical, Inc) force-sensing ablation catheter are a contact force of 20 g and a force-time integral of 400 g·s for the creation of transmural lesions. We aimed to evaluate TC in pediatric and congenital heart disease patients undergoing ablation. METHODS AND RESULTS: Comprehensive chart and case reviews were performed from June 2015 to March 2016...
May 17, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28513287/contact-force-technology-integrated-with-3d-navigation-system-for-atrial-fibrillation-ablation-improving-results
#2
Roberto Rordorf, Antonio Sanzo, Vincenzo Gionti
Pulmonary veins isolation (PVI) by radiofrequency (RF) ablation is currently an established treatment for symptomatic, drug-resistant paroxysmal atrial fibrillation. Although the effectiveness of the therapy has been clearly demonstrated, success rate after a single procedure is still sub-optimal. The main reason for recurrences after PVI is electrical pulmonary vein-atrium reconnection. In order to increase the likelihood of permanent PVI, the creation of a transmural, durable lesion is mandatory. The main determinants of lesion size and transmurality are power, stability, duration and contact-force during RF application...
May 17, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28451774/relationship-between-left-atrium-catheter-contact-force-and-pacing-threshold
#3
Teresa Barrio-López, Mercedes Ortiz, Eduardo Castellanos, Carla Lázaro, Jefferson Salas, Sergio Madero, Jesús Almendral
PURPOSE: The purpose of this study is to analyze the relationship between contact force (CF) and pacing threshold in left atrium (LA). METHODS: Six to ten LA sites were studied in 28 consecutive patients with atrial fibrillation undergoing pulmonary vein isolation. Median CF, bipolar and unipolar electrogram voltage, impedance, and bipolar and unipolar thresholds for consistent constant capture and for consistent intermittent capture were measured at each site. RESULTS: Pacing threshold measurements were performed at 188 LA sites...
April 27, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/28429499/atrial-fibrillation-patients-with-isolated-pulmonary-veins-is-sinus-rhythm-achievable
#4
Judit Szilágyi, Gregory M Marcus, Nitish Badhwar, Byron K Lee, Randall J Lee, Vasanth Vedantham, Zian H Tseng, Tomos Walters, Melvin Scheinman, Jeffrey Olgin, Edward P Gerstenfeld
BACKGROUND: The cornerstone of atrial fibrillation (AF) ablation is isolation of the pulmonary veins (PVs). Patients with recurrent AF undergoing repeat ablation usually have PV reconnection (PVr). The ablation strategy and outcome of patients undergoing repeat ablation who have persistent isolation of all PVs (PVi) at the time of repeat ablation is unknown. METHODS AND RESULTS: We studied consecutive patients with recurrent AF undergoing repeat ablation and compared patients with PVi to those with PVr...
April 21, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28422368/safety-and-efficacy-of-pulmonary-vein-isolation-using-a-surround-flow-catheter-with-contact-force-measurement-capabilities-a-multicenter-registry
#5
Giuseppe Stabile, Paolo Di Donna, Vincenzo Schillaci, Antonio Di Monaco, Assunta Iuliano, Domenico Caponi, Francesco Urraro, Francesco Solimene, Massimo Grimaldi, Marco Scaglione
INTRODUCTION: Pulmonary vein (PV) isolation is the cornerstone of catheter ablation in patients with atrial fibrillation (AF). Surround flow and contact force (CF) measurement capabilities might enhance procedure efficacy and safety. We report on the safety and mid-term efficacy of a novel ablation catheter for PV isolation in patients with AF. METHODS AND RESULTS: Two hundred thirty-three consecutive patients (57±11 years, 76% males, 51% with structural heart disease) referred for paroxysmal (157) or persistent (76) AF, underwent PV isolation by a surround flow catheter with CF measurement capability in 4 centers...
April 19, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28419605/radiofrequency-catheter-ablation-of-atrial-fibrillation-electrical-modification-suggesting-transmurality-is-faster-achieved-with-remote-magnetic-catheter-in-comparison-with-contact-force-use
#6
Sok-Sithikun Bun, Anis Ayari, Decebal Gabriel Latcu, Abdelkarim Errahmouni, Nadir Saoudi
BACKGROUND: Remote magnetic navigation (RMN) and contact force (CF) sensing catheters are available technologies for radiofrequency (RF) catheter ablation of atrial fibrillation (AF). Our purpose was to compare time to electrogram (EGM) modification suggesting transmural lesions between RMN and CF-guided AF ablation. METHODS AND RESULTS: 1008 RF applications were analyzed in 21 patients undergoing RMN (n = 11) or CF-guided ablation (n = 10) for paroxysmal AF. All procedures were performed in sinus rhythm during general anaesthesia...
April 17, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28381417/determinants-of-acute-and-late-pulmonary-vein-reconnection-in-contact-force-guided-pulmonary-vein-isolation-identifying-the-weakest-link-in-the-ablation-chain
#7
Milad El Haddad, Philippe Taghji, Thomas Phlips, Michael Wolf, Anthony Demolder, Rajin Choudhury, Sébastien Knecht, Yves Vandekerckhove, Rene Tavernier, Hiroshi Nakagawa, Mattias Duytschaever
BACKGROUND: Pulmonary vein reconnection (PVR) still determines recurrences of atrial fibrillation after contact force (CF)-guided pulmonary vein isolation. We studied whether acute PVR (adenosine and waiting time) and late PVR (at repeat) are explained by incomplete transmurality and contiguity within the deployed radiofrequency circle. METHODS AND RESULTS: We analyzed 42 CF-guided ipsilateral pulmonary vein isolation procedures. For each radiofrequency tag within the circle, we collected data reflecting lesion depth (time of application, power, impedance drop [Δ-Imp], CF, force-time integral [FTI], and ablation index [AI]) and contiguity (automated interlesion distance [ILD])...
April 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28260190/general-anesthesia-improves-contact-force-and-reduces-gap-formation-in-pulmonary-vein-isolation-a-comparison-with-conscious-sedation
#8
Akio Chikata, Takeshi Kato, Takanori Yaegashi, Satoru Sakagami, Chieko Kato, Takahiro Saeki, Keiichi Kawai, Shin-Ichiro Takashima, Hisayoshi Murai, Soichiro Usui, Hiroshi Furusho, Shuichi Kaneko, Masayuki Takamura
Compared to conscious sedation (CS), the use of general anesthesia (GA) in pulmonary vein isolation (PVI) is associated with a lower recurrence rate of atrial fibrillation (AF). GA may improve catheter stability and mapping system accuracy compared to CS, but its influence on contact force (CF) parameters during ipsilateral PVI has not previously been investigated. The study population comprised 176 consecutive patients (107 in GA group and 69 in CS group) with AF who underwent their first PVI procedure. We retrospectively assessed CF parameters, force-time integral (FTI), FTI/wall thickness during anatomical ipsilateral PVI and long-term outcome after ablation...
March 4, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28215568/reduction-in-radiation-dose-for-atrial-fibrillation-ablation-over-time-a-12-year-single-center-experience-of-2344-patients
#9
Aleksandr Voskoboinik, Elana S Kalman, Yonatan Savicky, Paul B Sparks, Joseph B Morton, Geoffrey Lee, Peter M Kistler, Jonathan M Kalman
BACKGROUND: Pulmonary vein isolation (PVI) is a well-established treatment of atrial fibrillation (AF), with contact force (CF)-sensing catheters joining 3-dimensional mapping systems and image integration as technological advancements over the last decade. OBJECTIVE: The purpose of this study was to analyze trends in radiation exposure for AF ablation over the last 12 years at our center. METHODS: We reviewed prospectively collected data of 2344 consecutive PVI procedures for either paroxysmal or persistent AF between January 2004 and December 2015...
February 12, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28209944/impact-of-contact-force-technology-on-reducing-the-recurrence-and-major-complications-of-atrial-fibrillation-ablation-a-systematic-review-and-meta-analysis
#10
Xianhui Zhou, Wenkui Lv, Wenhui Zhang, Yuanzheng Ye, Yaodong Li, Qina Zhou, Qiang Xing, Jianghua Zhang, Yanmei Lu, Ling Zhang, Hongli Wang, Wen Qin, Baopeng Tang
Contact force (CF) monitoring can be useful in accomplishing circumferential pulmonary vein (PV) isolation for atrial fibrillation (AF). This meta-analysis aimed to assess the efficacy and safety of a CF-sensing catheter in treating AF. Randomized controlled trials or non-randomized observational studies comparing AF ablation using CF-sensing or standard non-CF (NCF)-sensing catheters were identified from PubMed, EMBASE, Cochrane Library, Wanfang Data, and China National Knowledge Infrastructure (January 1, 1998-2016)...
February 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28190945/mems-based-flexible-force-sensor-for-tri-axial-catheter-contact-force-measurement
#11
Hardik J Pandya, Jun Sheng, Jaydev P Desai
Atrial fibrillation (AFib) is a significant healthcare problem caused by the uneven and rapid discharge of electrical signals from pulmonary veins (PVs). The technique of radiofrequency (RF) ablation can block these abnormal electrical signals by ablating myocardial sleeves inside PVs. Catheter contact force measurement during RF ablation can reduce the rate of AFib recurrence, since it helps to determine effective contact of the catheter with the tissue, thereby resulting in effective power delivery for ablation...
February 2017: Journal of Microelectromechanical Systems
https://www.readbyqxmd.com/read/28185351/persistent-atrial-fibrillation-ablation-with-or-without-contact-force-sensing
#12
Ayman A Hussein, Amr F Barakat, Walid I Saliba, Khaldoun G Tarakji, Mohamed Bassiouny, Bryan Baranowski, Patrick Tchou, Mandeep Bhargava, Thomas Dresing, Thomas Callahan, Daniel Cantillon, Mohamed Kanj, Bruce D Lindsay, Oussama M Wazni
INTRODUCTION: Arrhythmia recurrences remain common after ablation of persistent atrial fibrillation (PersAF). Contact force sensing catheters have been introduced for objective assessment of contact during radiofrequency application and have been suggested to improve outcomes in ablation of paroxysmal AF, but little is known about their role in PersAF ablation. We aimed to compare the procedural profiles and outcomes of (PersAF) ablation with or without using contact force (CF) sensing catheters...
February 10, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28150508/is-the-knowledge-of-contact-force-beneficial-in-pulmonary-vein-antrum-isolation
#13
Rune Borregaard, Henrik Kjærulf Jensen, Bawer Jalal Tofig, Samuel Alberg Thrysøe, Christian Gerdes, Jens Cosedis Nielsen, Peter Lukac
OBJECTIVE: To investigate the effect of the operator knowing the real-time contact force (CF) on the efficacy of pulmonary vein antrum isolation (PVAI). METHODS: Fifty patients with paroxysmal atrial fibrillation (AF) or short lasting persistent AF were randomized to CF guided PVAI (n = 25) or conventional PVAI (n = 25). In the CF guided group, CF between 10 and 40 g was aimed at. Efficacy of PVAI was measured as reduction in AF burden (AFB) and time to AF recurrence detected by implantable cardiac monitor (ICM), inserted three months before PVAI...
February 16, 2017: Scandinavian Cardiovascular Journal: SCJ
https://www.readbyqxmd.com/read/28087113/video-assisted-thoracoscopic-diaphragm-plication-using-a-running-suture-technique-is-durable-and-effective
#14
David S Demos, Mark F Berry, Leah M Backhus, Joseph B Shrager
OBJECTIVE: Surgeons have hesitated to adopt minimally invasive diaphragm plication techniques because of technical limitations rendering the procedure cumbersome or leading to early failure or reduced efficacy. We sought to demonstrate efficacy and durability of our thoracoscopic plication technique using a single running suture. METHODS: We retrospectively reviewed patients who underwent our technique for diaphragm plication since 2008. We used a single, buttressed, double-layered, to-and-fro running suture with additional plicating horizontal mattress sutures as needed...
May 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28069836/optimization-of-catheter-tissue-contact-during-pulmonary-vein-isolation-the-impact-of-atrial-rhythm
#15
Roberto De Ponti, Raffaella Marazzi, Lorenzo A Doni, Jacopo Marazzato, Claudia Baratto, Jorge A Salerno-Uriarte
AIMS: During pulmonary vein isolation (PVI), even if operators are aware of the contact force (CF), its values may greatly vary and the impact of cardiac rhythm has not been thoroughly investigated yet. This study aims at assessing the actual values of CF, the applications with suboptimal CF, and the impact of cardiac rhythm on CF during PVI. METHODS AND RESULTS: Twenty patients undergoing point-by-point PVI with a CF-sensing catheter were considered. CF target was between 6 and 40 g...
January 8, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28063111/comparison-of-catheter-ablation-for-paroxysmal-atrial-fibrillation-between-cryoballoon-and-radiofrequency-a-meta-analysis
#16
REVIEW
Chao-Feng Chen, Xiao-Fei Gao, Xu Duan, Bin Chen, Xiao-Hua Liu, Yi-Zhou Xu
PURPOSE: The present systematic review and meta-analysis aimed to assess and compare the safety and efficacy of radiofrequency (RF) and cryoballoon (CB) ablation for paroxysmal atrial fibrillation (PAF). RF and CB ablation are two frequently used methods for pulmonary vein isolation in PAF, but which is a better choice for PAF remains uncertain. METHODS: A systematic review was conducted in Medline, PubMed, Embase, and Cochrane Library. All trials comparing RF and CB ablation were screened and included if the inclusion criteria were met...
January 7, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/27940124/contact-force-guided-single-catheter-approach-for-pulmonary-vein-isolation-feasibility-outcomes-and-cost-effectiveness
#17
Thomas Pambrun, Stéphane Combes, Pedro Sousa, Mathieu Le Bloa, Rim El Bouazzaoui, Delphine Grand-Larrieu, Nathaniel Thompson, Ruairidh Martin, Nicolas Combes, Serge Boveda, Michel Haïssaguerre, Jean-Paul Albenque
BACKGROUND: For conventional ablation of paroxysmal atrial fibrillation (AF), an ablation catheter in conjunction with a circular mapping catheter (CMC) is typically used for pulmonary vein isolation (PVI). OBJECTIVE: The purpose of this study was to evaluate an approach for PVI with a single contact-force (CF) ablation catheter in terms of procedural reliability, outcomes, and cost-effectiveness. METHODS: One hundred consecutive patients with paroxysmal AF were included in the study...
December 7, 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/27909471/contact-force-and-atrial-fibrillation-ablation
#18
REVIEW
W Ullah, R J Schilling, T Wong
Catheters able to measure the force and vector of contact between the catheter tip and myocardium are now available. Pre-clinical work has established that the degree of contact between the radiofrequency ablation catheter and myocardium correlates with the size of the delivered lesion. Excess contact is associated with steam pops and perforation. Catheter contact varies within the left atrium secondary to factors including respiration, location, atrial rhythm and the trans-septal catheter delivery technology used...
February 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27816321/safety-and-efficacy-of-contemporary-catheter-ablation-for-atrial-fibrillation-patients-with-a-history-of-cardioembolic-stroke-in-the-era-of-direct-oral-anticoagulants
#19
Kimitaka Nishizaki, Taihei Itoh, Masaomi Kimura, Yuichi Tsushima, Yoshihiro Shoji, Takahiko Kinjo, Yuji Ishida, Kenichi Sasaki, Daisuke Horiuchi, Shingo Sasaki, Hirofumi Tomita, Ken Okumura
BACKGROUND: The safety and efficacy of the contemporary atrial fibrillation (AF) ablation in patients with a recent or previous history of cardioembolic stroke (CS) or transient ischemic attack (TIA) remain to be established. METHODS: A total of 447 patients who underwent first-ever contact force (CF)-guided AF ablation with circumferential pulmonary vein isolation were included. Of these, 17 had CS or TIA within 6 months before ablation (Group 1), 30 more than 6 months before ablation (Group 2), and the other 400 without CS or TIA (Group 3)...
November 2, 2016: Journal of Cardiology
https://www.readbyqxmd.com/read/27788997/use-of-the-new-contact-force-sensing-ablation-catheter-dramatically-reduces-fluoroscopy-time-during-atrial-fibrillation-ablation-procedures
#20
Aditi Naniwadekar, Kamal Joshi, Allan Greenspan, Sumeet Mainigi
OBJECTIVES: To study the impact of contact force (CF) sensing on fluoroscopy, procedure, left atrial (LA) and ablation times and number of ablations during atrial fibrillation (AF) ablation. BACKGROUND: Catheter ablation is an effective treatment for symptomatic AF. Recently a new ablation catheter providing real-time CF has been approved for use. METHODS: A nested case-control study was performed comparing radiofrequency ablation of AF using the irrigated CF-sensing ThermoCool SmartTouch catheter versus open-irrigated ThermoCool SF catheter (Biosense Webster, Inc...
May 2016: Indian Pacing and Electrophysiology Journal
keyword
keyword
31033
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"