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Cryo ablation

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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
#1
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: We developed and prospectively tested 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, non-standardized approach (Cryo-AFConventional, n=400) in a non-randomized fashion...
June 15, 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
#2
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...
June 13, 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
#3
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
#4
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 2, 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
#5
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
#6
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
#7
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...
May 17, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28462605/editorial-comment-on-tay-et-al
#8
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
#9
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
#10
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...
March 28, 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
#11
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
https://www.readbyqxmd.com/read/28202257/radiofrequency-catheter-ablation-of-atrioventricular-node-reentrant-tachycardia-in-children-with-limited-fluoroscopy
#12
Moshe Swissa, Einat Birk, Tamir Dagan, Sody Abby Naimer, Michal Fogelman, Tom Einbinder, Elchanan Bruckheimer, Rami Fogelman
BACKGROUND: Limited fluoroscopy cryo-ablation using a 3D electro-anatomical system (3DS) has been used for AVNRT in children. We aimed to facilitate a fluoroscopy limited approach of RF ablation of AVNRT in children. METHODS: A retrospective study was performed of procedure parameters in children undergoing RF ablation of AVNRT in 75 consecutive children (June 2011 to November 2013 - Group A) using standard fluoroscopy techniques compared to those of 64 consecutive children (December 2013 to May 2015 - Group B), using a fluoroscopy limited approach with 3DS...
January 31, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28113454/cryo-balloon-catheter-localization-based-on-a-support-vector-machine-approach
#13
Tanja Kurzendorfer, Philip W Mewes, Andreas Maier, Norbert Strobel, Alexander Brost
Cryo-balloon catheters have attracted an increasing amount of interest in the medical community as they can reduce patient risk during left atrial pulmonary vein ablation procedures. As cryo-balloon catheters are not equipped with electrodes, they cannot be localized automatically by electro-anatomical mapping systems. As a consequence, X-ray fluoroscopy has remained an important means for guidance during the procedure. Most recently, image guidance methods for fluoroscopy-based procedures have been proposed, but they provide only limited support for cryo-balloon catheters and require significant user interaction...
March 9, 2016: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28109525/wire-and-needle-potentials-facilitating-transseptal-puncture
#14
Konstantin M Heinroth, Thomas Hartkopf, Alexander Plehn, Joachim Wilhelm, Susanne Unverzagt, Stefan Frantz, Alexander Schirdewan
BACKGROUND: Transseptal puncture for left heart interventions became a routine procedure guided by fluoroscopy and echocardiography. The use of intracardiac potentials derived from the sheath-transseptal-needle/guidewire-combination may provide helpful information to increase safety of this procedure. METHODS AND RESULTS: We recorded the intracardiac potentials from the sheath-transseptal-needle/guidewire-combination during the transseptal puncture procedure in 31 consecutive patients (mean age 67...
May 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27966170/a-comparison-of-sample-preparation-strategies-for-biological-tissues-and-subsequent-trace-element-analysis-using-la-icp-ms
#15
Maximilian Bonta, Szilvia Török, Balazs Hegedus, Balazs Döme, Andreas Limbeck
Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) is one of the most commonly applied methods for lateral trace element distribution analysis in medical studies. Many improvements of the technique regarding quantification and achievable lateral resolution have been achieved in the last years. Nevertheless, sample preparation is also of major importance and the optimal sample preparation strategy still has not been defined. While conventional histology knows a number of sample pre-treatment strategies, little is known about the effect of these approaches on the lateral distributions of elements and/or their quantities in tissues...
March 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27909509/junctional-beats-during-cryo-ablation-of-the-slow-pathway-for-the-elimination-of-atrioventricular-nodal-reentrant-tachycardia
#16
Murat Sucu, Vedat Davutoglu, Esra Polat
The patient was a 39-year-old female with recurrent paroxysmal, regular narrow QRS complex tachycardia. Atrioventricular nodal reentrant tachycardia (AVNRT) was induced. The cryo-ablation attempts (-80°C, 240 second) were performed in the inferior-posterior triangle of Koch. We observed several junctional beats during cryo-ablation. After successful cryo-ablation, AVNRT induction was repeatedly checked during a waiting period of 30 minutes without recurrence. In our case we demonstrated that junctional beats can be observed during cryo-ablation...
June 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27826985/impact-of-cavotricuspid-isthmus-morphology-in-cryo-versus-radiofrequency-ablation-of-typical-atrial-flutter
#17
Serkan Saygi, Hamid Bastani, Nikola Drca, Per Insulander, Christer Wredlert, Jonas Schwieler, Mats Jensen-Urstad
OBJECTIVES: Cryoablation (CRYO) is an alternative to radiofrequency (RF) for catheter ablation of cavotricuspid isthmus (CTI)-dependent atrial flutter (AFL). We aimed to study whether different CTI morphologies had different impacts on procedural success for CRYO and RF. DESIGN: This study randomized 153 patients with CTI-dependent AFL (median age 65 years; range 34-82) to RF or CRYO (78 CRYO; 75 RF). Biplane angiography (RAO 30° and LAO 60°) was done before the ablation procedure and isthmuses were classified as straight (n = 81), concave (n = 43) or pouch-like (n = 29)...
November 25, 2016: Scandinavian Cardiovascular Journal: SCJ
https://www.readbyqxmd.com/read/27769853/atrioesophageal-fistula-formation-with-cryoballoon-ablation-is-most-commonly-related-to-the-left-inferior-pulmonary-vein
#18
Roy M John, Sunil Kapur, Kenneth A Ellenbogen, Jayanthi N Koneru
BACKGROUND: Collateral damage has been reported with use of the cryoballoon for pulmonary vein isolation. OBJECTIVE: The purpose of this study was to determine the incidence and characteristics associated with atrioesophageal fistula (AEF) after cryoballoon use. METHODS: Cases of AEF reported with use of the cryoballoon since 2011 were collected from the Manufacturer and User Facility Device Experience (MAUDE) database, publications, and the manufacturer's database...
February 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/27747025/atrial-fibrillation-review-of-current-treatment-strategies
#19
REVIEW
Joshua Xu, Jessica G Y Luc, Kevin Phan
Atrial fibrillation (AF) is the most prevalent cardiac arrhythmia in modern clinical practice, with an estimated prevalence of 1.5-2%. The prevalence of AF is expected to double in the next decades, progressing with age and increasingly becoming a global medical challenge. The first-line treatment for AF is often medical treatment with either rate control or anti-arrhythmic agents for rhythm control, in addition to anti-coagulants such as warfarin for stroke prevention in patient at risk. Catheter ablation has emerged as an alternative for AF treatment, which involves myocardial tissue lesions to disrupt the underlying triggers and substrates for AF...
September 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/27585790/thermal-and-mechanical-high-intensity-focused-ultrasound-perspectives-on-tumor-ablation-immune-effects-and-combination-strategies
#20
REVIEW
Renske J E van den Bijgaart, Dylan C Eikelenboom, Martijn Hoogenboom, Jurgen J Fütterer, Martijn H den Brok, Gosse J Adema
Tumor ablation technologies, such as radiofrequency-, cryo- or high-intensity focused ultrasound (HIFU) ablation will destroy tumor tissue in a minimally invasive manner. Ablation generates large volumes of tumor debris in situ, releasing multiple bio-molecules like tumor antigens and damage-associated molecular patterns. To initiate an adaptive antitumor immune response, antigen-presenting cells need to take up tumor antigens and, following activation, present them to immune effector cells. The impact of the type of tumor ablation on the precise nature, availability and suitability of the tumor debris for immune response induction, however, is poorly understood...
February 2017: Cancer Immunology, Immunotherapy: CII
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