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Cryo ablation

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https://www.readbyqxmd.com/read/29138585/a-comparative-analysis-of-clinical-outcomes-and-disposable-costs-of-different-catheter-ablation-methods-for-the-treatment-of-atrioventricular-nodal-reentrant-tachycardia
#1
Adam E Berman, Harold Rivner, Robin Chalkley, Vahé Heboyan
Background: Catheter ablation of atrioventricular nodal reentrant tachycardia (AVNRT) is a commonly performed electrophysiology (EP) procedure. Few data exist comparing conventional (CONV) versus novel ablation strategies from both clinical and direct cost perspectives. We sought to investigate the disposable costs and clinical outcomes associated with three different ablation methodologies used in the ablation of AVNRT. Methods: We performed a retrospective review of AVNRT ablations performed at Augusta University Medical Center from 2006 to 2014...
2017: ClinicoEconomics and Outcomes Research: CEOR
https://www.readbyqxmd.com/read/29107175/entrapment-of-focal-atrial-tachycardia-using-cryoballoon-ablation-sinus-rhythm-in-the-left-atrium-and-ongoing-atrial-tachycardia-in-the-left-atrial-appendage
#2
Hikmet Yorgun, Uğur Canpolat, Banu Evranos, Kudret Aytemir
Left atrial appendage (LAA) is a well-known source of focal atrial tachycardias (AT). Although radio-frequency (RF) energy is the most commonly used technique in such cases, there was an option other than epicardial approach when RF technique fails. Cryoballoon technology is primarily developed to be used for pulmonary vein isolation (PVI). Also, there was no report regarding the isolation of LAA by using cryo-balloon in patients with focal AT. In this case, for the first time in the literature, we successfully isolated the LAA because of failed attempts of RF ablation for focal AT in whom the surface electrogram showed a sinus rhythm while arrhythmia continues inside the LAA...
October 28, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29036571/atrial-flow-dynamics-as-a-determinant-of-tissue-temperature-during-balloon-cryoablation
#3
Justin Ghosh, Mark A McGuire
Aims: Balloon cryoablation is an accepted method of achieving pulmonary vein isolation for the treatment of atrial fibrillation. The relationship between blood flow in the atrium and cryo energy delivery to the tissue remains poorly understood. Methods and results: Controlled cryoablations were performed in vitro using a pulmonary vein phantom constructed from bovine muscle, providing a 20 mm vein ostium. A temperature sensor was mounted within the 'vein wall' at a 1 mm tissue depth...
October 4, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28960632/zero-fluoroscopy-cryothermal-ablation-of-atrioventricular-nodal-reentry-tachycardia-guided-by-endovascular-and-endocardial-catheter-visualization-using-intracardiac-echocardiography-ice-ice-trial
#4
Blerim Luani, Bernhard Zrenner, Maksim Basho, Conrad Genz, Thomas Rauwolf, Ivan Tanev, Alexander Schmeisser, Rüdiger C Braun-Dullaeus
INTRODUCTION: Stochastic damage of the ionizing radiation to both patients and medical staff is a drawback of fluoroscopic guidance during catheter ablation of cardiac arrhythmias. Therefore, emerging zero-fluoroscopy catheter-guidance techniques are of great interest. METHODS AND RESULTS: We investigated in a prospective pilot study the feasibility and safety of the cryothermal (CA) slow-pathway ablation in patients with symptomatic atrioventricular-nodal-reentry-tachycardia (AVNRT) using solely intracardiac echocardiography (ICE) for endovascular and endocardial catheter visualization...
September 27, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28744873/epicardial-ablation-of-tachyarrhythmia-in-children-experience-at-two-academic-centers
#5
Shailendra Upadhyay, Edward P Walsh, Frank Cecchin, John K Triedman, Juan Villafane, J Philip Saul
BACKGROUND: Experience with percutaneous epicardial ablation of tachyarrhythmia in pediatrics is limited. This case series addresses the feasibility, safety, and complications of the procedure in children. METHODS: A total of nine patients underwent 10 epicardial ablation procedures from 2002 to 2013 at two academic centers. Activation mapping was performed in all cases, and electroanatomic map was utilized in nine of the 10 procedures. Patients had undergone one to three failed endocardial catheter ablations in addition to medical management, and all had symptoms, a high-risk accessory pathway (AP), aborted cardiac arrest with Wolff-Parkinson-White syndrome (WPW), or ventricular dysfunction...
July 26, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28733782/catheter-ablation-of-atrial-fibrillation-an-overview-for-clinicians
#6
REVIEW
Nebojša Mujović, Milan Marinković, Radoslaw Lenarczyk, Roland Tilz, Tatjana S Potpara
Catheter ablation (CA) of atrial fibrillation (AF) is currently one of the most commonly performed electrophysiology procedures. Ablation of paroxysmal AF is based on the elimination of triggers by pulmonary vein isolation (PVI), while different strategies for additional AF substrate modification on top of PVI have been proposed for ablation of persistent AF. Nowadays, various technologies for AF ablation are available. The radiofrequency point-by-point ablation navigated by electro-anatomical mapping system and cryo-balloon technology are comparable in terms of the efficacy and safety of the PVI procedure...
August 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28723304/the-quest-for-durable-lesions-in-catheter-ablation-of-atrial-fibrillation-technological-advances-in-radiofrequency-catheters-and-balloon-devices
#7
Tilman Maurer, Karl-Heinz Kuck
Atrial fibrillation is the most common cardiac arrhythmia and represents a growing clinical, social and economic challenge. Catheter ablation for symptomatic atrial fibrillation has evolved from an experimental procedure into a widespread therapy and offers a safe and effective treatment option. A prerequisite for durable PVI are transmural and contiguous circumferential lesions around the pulmonary veins. However, electrical reconnection of initially isolated pulmonary veins remains a primary concern and is a dominant factor for arrhythmia recurrence during long-term follow up...
July 24, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28680636/ablative-techniques-for-the-treatment-of-benign-and-malignant-breast-tumours
#8
REVIEW
Mirjam C L Peek, Michael Douek
Minimally invasive techniques like high intensity focused ultrasound, radiofrequency ablation, cryo-ablation, laser ablation and microwave ablation have been used to treat both breast fibroadenomata and breast cancer as an alternative to surgical excision, potentially reducing the complications, improving cosmesis and reducing hospital stay. This review describes the most common minimally invasive techniques available, their history and some of the studies performed with these techniques in both benign and malignant lesions...
2017: Journal of Therapeutic Ultrasound
https://www.readbyqxmd.com/read/28649087/acute-hemodynamic-and-tissue-effects-of-cryoballoon-ablation-on-pulmonary-vessels-the-ivus-cryo-study
#9
Jakub Baran, Paweł Lewandowski, Krzysztof Smarż, Agnieszka Sikorska, Beata Zaborska, Piotr Kułakowski
BACKGROUND: Cryoballoon-based pulmonary vein isolation (CB-PVI) has been widely used for the treatment of atrial fibrillation. Although generally safe and effective, the procedure may be associated with pulmonary vein (PV) stenosis and bronchial or esophageal injury. The mechanisms leading to these complications have not been studied in detail. Our aim was to examine acute effects of cryoballoon on the pulmonary vessel and right heart pressures as well as PV wall morphology. METHODS AND RESULTS: In 8 patients (5 men, mean age 55±14 years) undergoing CB-PVI, pressure in each PV was measured by catheter located inside the PV directly before and after CB-PVI...
June 25, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28625929/verification-of-a-novel-atrial-fibrillation-cryoablation-dosing-algorithm-guided-by-time-to-pulmonary-vein-isolation-results-from-the-cryo-dosing-study-cryoballoon-ablation-dosing-based-on-the-assessment-of-time-to-effect-and-pulmonary-vein-isolation-guidance
#10
Arash Aryana, David N Kenigsberg, Marcin Kowalski, Charles H Koo, Hae W Lim, Padraig Gearoid O'Neill, Mark R Bowers, Robert B Hokanson, Kenneth A Ellenbogen
BACKGROUND: There are no recommendations on the optimal dosing for cryoablation of atrial fibrillation (Cryo-AF). OBJECTIVE: The purpose of this study was to develop and prospectively test a Cryo-AF dosing protocol guided exclusively by time-to-pulmonary vein (PV) isolation (TT-PVI) in patients undergoing a first-time Cryo-AF. METHODS: In this multicenter study, we examined the acute/long-term safety/efficacy of Cryo-AF using the proposed dosing algorithm (Cryo-AFDosing; n = 355) against a conventional, nonstandardized approach (Cryo-AFConventional; n = 400) in a nonrandomized fashion...
September 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28612086/comparison-of-6-mm-versus-8-mm-tip-cryoablation-catheter-for-the-treatment-of-atrioventricular-nodal-reentrant-tachycardia-in-children-a-prospective-study
#11
COMPARATIVE STUDY
Volkan Tuzcu, Enes Elvin Gul, Mehmet Karacan, Hacer Kamali, Nida Celik, Celal Akdeniz
Due to its safety profile, cryoablation (Cryo) for atrioventricular nodal reentrant tachycardia (AVNRT) is more commonly preferred over radiofrequency (RF) ablation in children in recent years. Recent studies demonstrated high long-term success rates comparable to radiofrequency ablation. The aim of this prospective study was to compare the efficacy and safety of an 8-mm-tip versus 6-mm-tip Cryo catheter in the treatment of AVNRT in children. A total of 125 consecutive patients over 10 years of age with AVNRT were included...
August 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28602188/mapping-of-the-spatial-distribution-of-silver-nanoparticles-in-root-tissues-of-vicia-faba-by-laser-induced-breakdown-spectroscopy-libs
#12
L Krajcarová, K Novotný, M Kummerová, J Dubová, V Gloser, J Kaiser
The manuscript presents a procedure for optimal sample preparation and the mapping of the spatial distribution of metal ions and nanoparticles in plant roots using laser-induced breakdown spectroscopy (LIBS) in a double-pulse configuration (DP LIBS) in orthogonal reheating mode. Two Nd:YAG lasers were used; the first one was an ablation laser (UP-266 MACRO, New Wave, USA) with a wavelength of 266nm, and the second one (Brilliant, Quantel, France), with a fundamental wavelength of 1064nm, was used to reheat the microplasma...
October 1, 2017: Talanta
https://www.readbyqxmd.com/read/28583744/-pulmonary-revalvulation-and-rhythmologenic-risks-in-patients-with-repaired-tetralogy-of-fallot
#13
REVIEW
Rosario Pilato, Dominique Lacroix, Olivia Domanski, François Godart
Tetralogy of Fallot is a frequent congenital heart disease that has been repaired since the mid-1950s. The follow-up after repair is good despite a persistent risk of sudden death. The risk factors in long-term follow-up are advanced age at repair, hemodynamic status of the right ventricle, QRS duration≥180ms, left ventricular dysfunction, and existence of sustained or not ventricular tachycardia. In the presence of significant pulmonary regurgitation, it is necessary to perform revalvulation either by classic surgery or cardiac catheterization...
June 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28572150/percutaneous-spinal-ablation-in-a-sheep-model-protective-capacity-of-an-intact-cortex-correlation-of-ablation-parameters-with-ablation-zone-size-and-correlation-of-postablation-mri-and-pathologic-findings
#14
A N Wallace, T J Hillen, M V Friedman, Z S Zohny, B H Stephens, S C Greco, M R Talcott, J W Jennings
BACKGROUND AND PURPOSE: Despite the growing use of percutaneous ablation therapy for the treatment of metastatic spine disease, several issues have yet to be fully addressed. Our aims were to determine whether the vertebral body cortex protects against ablation-induced spinal cord injury; correlate radiofrequency, cryo-, and microwave ablation parameters with resulting spinal ablation zone dimensions and describe normal spinal marrow postablation changes on MR imaging. MATERIALS AND METHODS: Ten thoracolumbar vertebrae in 3 sheep were treated with radiofrequency ablation, cryoablation, or microwave ablation under fluoroscopic guidance...
June 1, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28551945/targeting-ablation-strategies-and-electro-anatomical-systems-for-different-atrial-fibrillation-patterns
#15
Francesco Santoro, Christian H Heeger, Andreas Metzner, Natale D Brunetti, Matteo DI Biase, Karl-Heinz Kuck, Feifan Ouyang
INTRODUCTION: Catheter ablation (CA) is an established and widespread treatment option for drug refractory atrial fibrillation (AF). CA has undergone considerable improvements during the last years and several ablation strategies have been proposed for different AF patterns. EVIDENCE ACQUISITION: The main cornerstone is the electrical isolation of pulmonary veins (PVs) especially among patients with paroxysmal AF. This can be achieved mainly with the use of radiofrequency or cryo-energy...
May 25, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28516273/a-comparative-study-of-ablation-boundary-sharpness-after-percutaneous-radiofrequency-cryo-microwave-and-irreversible-electroporation-ablation-in-normal-swine-liver-and-kidneys
#16
Francois H Cornelis, Jeremy C Durack, Simon Y Kimm, Thomas Wimmer, Jonathan A Coleman, Stephen B Solomon, Govindarajan Srimathveeravalli
PURPOSE: To compare ablation boundary sharpness after percutaneous radiofrequency ablation (RFA), cryoablation (CA), microwave ablation (MWA) and irreversible electroporation (IRE) ablation in normal swine liver and kidney. MATERIALS AND METHODS: Percutaneous CT-guided RFA (n = 5), CA (n = 5), MWA (n = 5) and IRE (n = 5) were performed in the liver and kidney of four Yorkshire pigs. Parameters were chosen to produce ablations 2-3 cm in diameter with a single ablation probe...
October 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28462605/editorial-comment-on-tay-et-al
#17
Joseph L Chin
No abstract text is available yet for this article.
June 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28385075/propensity-score-matched-comparison-of-partial-to-whole-gland-cryotherapy-for-intermediate-risk-prostate-cancer-an-analysis-of-the-cryo-on-line-data-registry-data
#18
Kae Jack Tay, Thomas James Polascik, Ahmed Elshafei, Efrat Tsivian, J Stephen Jones
OBJECTIVE: To compare the oncologic and functional outcomes of partial vs whole-gland cryotherapy for men with intermediate-risk prostate cancer. SUBJECTS/PATIENTS: Men with intermediate-risk prostate cancer treated with primary prostate cryotherapy from 1993 to 2013 were selected from the Cryo On-Line Data Registry for a 1:1 matched comparison between those undergoing whole-gland and partial prostate cryotherapy (targeted ablation, unilateral/bilateral nerve-sparing ablations)...
June 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28363660/expanding-role-of-percutaneous-ablative-and-consolidative-treatments-for-musculoskeletal-tumours
#19
REVIEW
A N Kurup, M R Callstrom
Interventional approaches to musculoskeletal tumours have significantly changed over the last several years, and new treatments continue to be developed. All ablative modalities are currently applied to the treatment of bone tumours, including radiofrequency, cryo-, microwave, and laser ablation devices. Indications for ablation of bone and soft-tissue tumours have expanded beyond palliation of painful bone metastases and eradication of osteoid osteomas to the local control of oligometastatic disease from a number of primary tumours and ablation of desmoid tumours...
August 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28216515/particular-morphology-of-inferior-pulmonary-veins-and-difficulty-of-cryoballoon-ablation-in-patients-with-paroxysmal-atrial-fibrillation
#20
Ryobun Yasuoka, Takashi Kurita, Yasuhito Kotake, Naotaka Hashiguchi, Koichiro Motoki, Kazuhiro Kobuke, Yoshitaka Iwanaga, Shunichi Miyazaki
BACKGROUND: The CRYO-Japan PMS study indicated that cryoballoon ablation (Cryo-Abl) has a lower acute success rate of pulmonary vein isolation (PVI) for the right and left inferior PVs (RIPV and LIPV, respectively) than for the superior PVs. This study aimed to determine if the orientation and position of the inferior PVs are related to the difficulty of acute success of PVI.Methods and Results:We investigated 30 consecutive patients who underwent Cryo-Abl. A "difficult PV" was defined as the requirement for >2 cooling applications and/or touch-up ablation to achieve PVI...
February 17, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
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