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Catheter Mapping

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https://www.readbyqxmd.com/read/28346243/modeling-flowsheet-data-to-support-secondary-use
#1
Bonnie L Westra, Beverly Christie, Steven G Johnson, Lisiane Pruinelli, Anne LaFlamme, Suzan G Sherman, Jung In Park, Connie W Delaney, Grace Gao, Stuart Speedie
The purpose of this study was to create information models from flowsheet data using a data-driven consensus-based method. Electronic health records contain a large volume of data about patient assessments and interventions captured in flowsheets that measure the same "thing," but the names of these observations often differ, according to who performs documentation or the location of the service (eg, pulse rate in an intensive care, the emergency department, or a surgical unit documented by a nurse or therapist or captured by automated monitoring)...
March 24, 2017: Computers, Informatics, Nursing: CIN
https://www.readbyqxmd.com/read/28344442/voltage-directed-cavo-tricuspid-isthmus-ablation-using-a-novel-ablation-catheter-mapping-technology-in-a-myotonic-dystrophy-type-i-patient
#2
Vincenzo Russo, Anna Rago, Andrea Antonio Papa, Federica Di Meo, Carmine Ciardiello, Giovanni Cimmino, Gerardo Nigro
A successful case of maximum voltage-directed cavo-tricuspid isthmus (CTI) ablation using a novel ablation catheter mapping technology in a myotonic dystrophy type I (DM1) patient is reported. The patient complained recurrent episodes of atrial flutter, revealed by the atrio-ventricular electrograms analysis during the routine pacemaker controls.
October 2016: Acta Myologica: Myopathies and Cardiomyopathies: Official Journal of the Mediterranean Society of Myology
https://www.readbyqxmd.com/read/28343787/relationship-between-rotors-and-complex-fractionated-electrograms-in-atrial-fibrillation-using-a-novel-computational-analysis
#3
Pedro Adragão, Pedro Carmo, Diogo Cavaco, João Carmo, António Ferreira, Francisco Moscoso Costa, Maria Salomé Carvalho, João Mesquita, Rita Quaresma, Francisco Belo Morgado, Miguel Mendes
INTRODUCTION: Rotors and complex fractionated atrial electrograms (CFAEs) have been suggested as possible therapeutic targets in ablation of atrial fibrillation (AF). The aim of this study was to assess the relationship between rotors and CFAEs in patients with AF. METHODS: We studied 18 patients with AF (mean age 69±8 years, 33% female) who underwent rotor ablation and pulmonary vein isolation. Endocardial mapping was performed with a basket catheter to identify the presence, number and location of rotors and CFAEs...
March 24, 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/28341502/significance-of-blunted-venous-waveforms-seen-on-upper-extremity-ultrasound
#4
Xuan-Binh D Pham, Ezinne J Ihenachor, Hoover Wu, Jerry J Kim, Amy H Kaji, Matthew C Koopmann, Timothy J Ryan, Christian de Virgilio
INTRODUCTION: Current guidelines recommend vascular mapping ultrasound (US) prior to arteriovenous fistula creation. Blunted venous waveforms (BVW) suggest central venous stenosis; however, this relationship and one between BVW and the presence of a central venous catheter (CVC) remain unclear. MATERIAL AND METHODS: All patients who received upper-extremity vascular mapping US between January 2013 and October 2014 at a single institution were retrospectively reviewed...
March 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28340078/image-integration-into-3-dimensional-electro-anatomical-mapping-system-facilitates-safe-ablation-of-ventricular-arrhythmias-originating-from-the-aortic-root-and-its-vicinity
#5
Mario Jularic, Ruken Özge Akbulak, Benjamin Schäffer, Julia Moser, Jana Nuehrich, Christian Meyer, Christian Eickholt, Stephan Willems, Boris A Hoffmann
Aims: During ablation in the vicinity of the coronary arteries establishing a safe distance from the catheter tip to the relevant vessels is mandatory and usually assessed by fluoroscopy alone. The aim of the study was to investigate the feasibility of an image integration module (IIM) for continuous monitoring of the distance of the ablation catheter tip to the main coronary arteries during ablation of ventricular arrhythmias (VA) originating in the sinus of valsalva (SOV) and the left ventricular summit part of which can be reached via the great cardiac vein (GCV)...
March 7, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28339980/pushing-the-limits-establishing-an-ultra-low-framerate-and-antiscatter-grid-less-radiation-protocol-for-left-atrial-ablations
#6
Philipp Attanasio, Tobias Schreiber, Burkert Pieske, Florian Blaschke, Leif-Hendrik Boldt, Wilhelm Haverkamp, Martin Huemer
Aims: Despite the use of 3D mapping systems and new developments of non-fluoroscopic options, most centres still rely at least in part on fluoroscopy for catheter visualization during catheter ablations. The purpose of this study was to assess the feasibility of using an ultra-low frame rate and antiscatter grid-less radiation protocol during complex left atrial ablations to minimize radiation exposure for the patient and staff. Methods and results: A total of 150 consecutive patients undergoing left atrial ablations in our hospital were included in the analysis...
March 4, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28339804/intra-cardiac-and-peripheral-levels-of-biochemical-markers-of-fibrosis-in-patients-undergoing-catheter-ablation-for-atrial-fibrillation
#7
Gordon A Begg, Rashed Karim, Tobias Oesterlein, Lee N Graham, Andrew J Hogarth, Stephen P Page, Christopher B Pepper, Kawal Rhode, Gregory Y H Lip, Arun V Holden, Sven Plein, Muzahir H Tayebjee
Aims: Measurement of circulating biomarkers of fibrosis may have a role in selecting patients and treatment strategy for catheter ablation. Pro-collagen type III N-terminal pro-peptide (PIIINP), C-telopeptide of type I collagen (ICTP), fibroblast growth factor 23 (FGF-23), and galectin 3 (gal-3) have all been suggested as possible biomarkers for this indication, but studies assessing whether peripheral levels reflect intra-cardiac levels are scarce. Methods and results: We studied 93 patients undergoing ablation for paroxysmal atrial fibrillation (AF) (n = 63) or non-paroxysmal AF (n = 30)...
February 27, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28339750/downstream-overdrive-pacing-and-intracardiac-concealed-fusion-to-guide-rapid-identification-of-atrial-tachycardia-after-atrial-fibrillation-ablation
#8
Chirag R Barbhaiya, Samuel H Baldinger, Saurabh Kumar, Jason S Chinitz, Alan D Enriquez, Roy John, William G Stevenson, Gregory F Michaud
Aims: Atrial tachycardia (AT) related to atrial fibrillation (AF) ablation frequently poses a diagnostic challenge. Downstream overdrive pacing (DOP) can be used to rapidly detect reentry and assess proximity of a pacing site to an AT circuit or focus. We hypothesized that systematic DOP using multielectrode catheters would facilitate AT mapping. Methods and results: DOP identified constant fusion when the post-pacing interval (PPI)-tachycardia cycle length (TCL) <40 ms and stimulus to adjacent upstream atrial electrogram interval >75% of TCL...
February 17, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28339546/multicentre-safety-of-adding-focal-impulse-and-rotor-modulation-firm-to-conventional-ablation-for-atrial-fibrillation
#9
David E Krummen, Tina Baykaner, Amir A Schricker, Christopher A B Kowalewski, Vijay Swarup, John M Miller, Gery F Tomassoni, Shirley Park, Mohan N Viswanathan, Paul J Wang, Sanjiv M Narayan
Aims: Focal Impulse and Rotor Modulation (FIRM) uses 64-electrode basket catheters to identify atrial fibrillation (AF)-sustaining sites for ablation, with promising results in many studies. Accordingly, new basket designs are being tested by several groups. We set out to determine the procedural safety of adding basket mapping and map-guided ablation to conventional pulmonary vein isolation (PVI). Methods and results: We collected 30 day procedural safety data in five US centres for consecutive patients undergoing FIRM plus PVI (FIRM-PVI) compared with contemporaneous controls undergoing PVI without FIRM...
December 22, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28327093/continuous-non-invasive-finger-cuff-caretaker%C3%A2-comparable-to-invasive-intra-arterial-pressure-in-patients-undergoing-major-intra-abdominal-surgery
#10
Irwin Gratz, Edward Deal, Francis Spitz, Martin Baruch, I Elaine Allen, Julia E Seaman, Erin Pukenas, Smith Jean
BACKGROUND: Despite increased interest in non-invasive arterial pressure monitoring, the majority of commercially available technologies have failed to satisfy the limits established for the validation of automatic arterial pressure monitoring by the Association for the Advancement of Medical Instrumentation (AAMI). According to the ANSI/AAMI/ISO 81060-2:2013 standards, the group-average accuracy and precision are defined as acceptable if bias is not greater than 5 mmHg and standard deviation is not greater than 8 mmHg...
March 21, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28323880/randomized-controlled-trials-in-central-vascular-access-devices-a-scoping-review
#11
Mari Takashima, Gillian Ray-Barruel, Amanda Ullman, Samantha Keogh, Claire M Rickard
BACKGROUND: Randomized controlled trials evaluate the effectiveness of interventions for central venous access devices, however, high complication rates remain. Scoping reviews map the available evidence and demonstrate evidence deficiencies to focus ongoing research priorities. METHOD: A scoping review (January 2006-December 2015) of randomized controlled trials evaluating the effectiveness of interventions to improve central venous access device outcomes; including peripherally inserted central catheters, non-tunneled, tunneled and totally implanted venous access catheters...
2017: PloS One
https://www.readbyqxmd.com/read/28322592/intravascular-pulmonary-venous-ultrasound-imaging-for-catheter-ablation-of-atrial-fibrillation
#12
Gabriel Cismaru, Serban Schiau, Lucian Muresan, Radu Rosu, Mihai Puiu, Dana Pop, Dumitru Zdrenghea
Atrial fibrillation is the most common cardiac arrhythmia. The development of electroanatomical mapping is an increase demand for advanced intracardiac imaging techniques of the left atrium and pulmonary veins. IVUS can demonstrate quantitative changes like lumen and wall thickness as well as qualitative changes of the pulmonary or coronary arteries wall. IVUS could also provide relevant real time imaging of the atrial and pulmonary venous wall during catheter ablation. Areas covered: The Medline and Embase databases were searched for preclinical and clinical studies of IVUS in patients with ablation of atrial fibrillation or left atrial arrhythmias...
March 21, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28321025/one-year-success-rate-of-pulmonary-vein-isolation-using-a-novel-irrigated-multipolar-mapping-and-ablation-catheter-with-reduced-power-settings
#13
Dong-In Shin, Jan-Erik Guelker, Christian Blockhaus, Jan Schmidt, Muhammed Kurt, Lukas Clasen, Patrick Mueller, Lars Bansemir, Christoph Brinkmeyer, Alexander Bufe, Malte Kelm, Hisaki Makimoto
The use of a novel irrigated multipolar ablation and mapping catheter for pulmonary vein isolation in patients with atrial fibrillation (AF) has demonstrated reasonable acute success rates and short procedure times, however, long-term outcome data are limited. The aim of this study was to analyze the long-term efficacy of this novel ablation system utilizing a reduced power setting for safety purposes.A total of 89 patients with paroxysmal (63 of 89 patients; 71%) or persistent AF underwent PVI with a reduced power setting of maximum 20 Watts (W) unipolar radiofrequency energy and 30 seconds in duration...
March 17, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28318819/slow-pathway-radiofrequency-ablation-using-magnetic-navigation-a-description-of-technique-and-retrospective-case-analysis
#14
Abhishek Bhaskaran, Maha Albarri, Neil Ross, Sara Al Raisi, Rahul Samantha, Leonette Roode, Fazlur Nadri, Jeanette Ng, Stuart Thomas, Aravinda Thiagalingam, Pramesh Kovoor
BACKGROUND: The Magnetic Navigation System (MNS) catheter was shown to be stable in the presence of significant cardiac wall motion and delivered more effective lesions compared to manual control. This stability could potentially make AV junctional reentrant tachycardia (AVNRT) ablation safer. The aim of this study is to describe the method of mapping and ablation of AVNRT with MNS and 3-D electro-anatomical mapping system (CARTO, Biosense Webster, Diamond bar, CA, USA) anatomical mapping, with a view to improve the safety of ablation...
February 21, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28315567/a-practical-guide-for-building-a-highway-between-atria-during-transseptal-puncture-without-radiation
#15
Yuan Yuan, Deyong Long, Caihua Sang, Ling Tao, Jianzeng Dong, Changsheng Ma
OBJECTIVE: To investigate whether switching the ablation catheter between the right and left atria through transseptal puncture site can be accurately performed without fluoroscopy. METHODS: Forty patients with persistent atrial fibrillation (mean age, 60.2±7.4 years; 65% males) got "2C3L" approach were randomized in a 1:1 ratio to undergo either crossing interatrial septum guided by fluoroscopy (trackless group) or crossing septum guided by track image that was mapped by Carto3 system (track group)...
March 9, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28291473/physiological-impact-of-platelet-apheresis-in-pigs-oxygen-metabolism-and-coagulation
#16
Wenjun Z Martini, Cassandra M Rodriguez, Jonathan Richardson, James K Aden, Andrew P Cap, Michael A Dubick
INTRODUCTION: Platelet apheresis is a routine clinical practice, but the physiological impact on the donors has been incompletely characterized. This study measured the effects of platelet apheresis on hemodynamics, oxygen metabolism, and coagulation in pigs to assess its impact before employing the animals in experimental studies. METHODS: Forty pigs (39.8 ± 0.6 kg) were anesthetized and catheterized with an apheresis catheter in the femoral vein. During the platelet apheresis process, blood was withdrawn from the pig to separate platelets, and the remaining red blood cells and plasma returned back to the pigs, using the Haemonetics MCS+9000 system...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28285456/is-vf-an-ablatable-rhythm
#17
REVIEW
Ghassen Cheniti, Meleze Hocini, Ruairidh Martin, Frederic Sacher, Remi Dubois, Michel Haissaguerre, Pierre Jais
Ventricular fibrillation (VF) has traditionally been considered to be a disorganized arrhythmia not amenable to catheter ablation. However, a better understanding of the VF pathophysiology has allowed identification of targets for ablation. Ablation targeting the premature ventricular complexes which trigger VF was proven to be associated with high success rates and long-term freedom from VF recurrence. Recent mapping data has identified rotors, focal breakthroughs, and figure of eight re-entries as main drivers maintaining human VF...
February 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28285383/adenosine-administration-during-hybrid-atrial-fibrillation-ablation-to-test-dormant-pulmonary-vein-conduction
#18
Mindy Vroomen, Mark La Meir, Jos G Maessen, Harry J Crijns, Laurent Pison
BACKGROUND: Adenosine administration after initial pulmonary vein isolation (PVI) reveals dormant conduction and predicts atrial fibrillation (AF) recurrence. Elimination of dormant conduction when present may increase a long-term success rate of AF ablation procedures. There are no studies till date using adenosine to reveal acute reconduction of pulmonary veins (PVs) after epicardial PVI during a hybrid AF ablation procedure. METHODS: We included 24 patients (21 male, 55 ± 9 years) undergoing hybrid ablation for symptomatic paroxysmal (n = 12) and persistent (n = 12) AF, using an epicardial bipolar radiofrequency clamp to perform PVI...
March 11, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/28282453/the-use-of-a-novel-signal-analysis-to-identify-the-origin-of-idiopathic-right-ventricular-outflow-tract-ventricular-tachycardia-during-sinus-rhythm-simultaneous-amplitude-frequency-electrogram-transformation-mapping
#19
Abigail Louise D Te, Satoshi Higa, Fa-Po Chung, Chin-Yu Lin, Men-Tzung Lo, Che-An Liu, Chen Lin, Yi-Chung Chang, Shih-Lin Chang, Li-Wei Lo, Yu-Feng Hu, Ta-Chuan Tuan, Tze-Fan Chao, Jonan Liao, Yao-Ting Chang, Chung-Hsing Lin, Yuan Hung, Shinya Yamada, Kuo-Li Pan, Yenn-Jiang Lin, Shih-Ann Chen
INTRODUCTION: The signal characteristics of intracardiac bipolar electrograms at the origin of idiopathic RVOT-VT during sinus rhythm remain unclear. OBJECTIVE: The study sought to develop a novel real-time/online technique, simultaneous amplitude frequency electrogram transformation (SAFE-T), to quantify and localize the diseased ventricular substrate in idiopathic RVOT-VT. METHODS: We retrospectively investigated the intracardiac bipolar recordings in 70 consecutive patients (26% male, mean age 42±12 years) who underwent successful radiofrequency catheter ablation of idiopathic RVOT-VT...
2017: PloS One
https://www.readbyqxmd.com/read/28279745/novel-algorithm-for-accelerated-electroanatomical-mapping-and-prediction-of-earliest-activation-of-focal-cardiac-arrhythmias-using-mathematical-optimization
#20
Tobias Weber, Hugo A Katus, Sebastian Sager, Eberhard P Scholz
BACKGROUND: Premature beats (PBs) are a common finding in patients suffering from structural heart disease, but they can also be present in healthy individuals. Catheter ablation represents a suitable therapeutic approach. However, the exact localization of the origin can be challenging, especially in cases of low PB burden during the procedure. OBJECTIVE: Based on the hypothesis that mathematical optimization would significantly accelerate the localization of earliest activation we developed an automated mapping algorithm...
March 6, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
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