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Cryo ablation

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https://www.readbyqxmd.com/read/28216515/particular-morphology-of-inferior-pulmonary-veins-and-difficulty-of-cryoballoon-ablation-in-patients-with-paroxysmal-atrial-fibrillation
#1
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
#2
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
#3
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
#4
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...
January 15, 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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
https://www.readbyqxmd.com/read/27575566/minimally-invasive-ablative-techniques-in-the-treatment-of-breast-cancer-a-systematic-review-and-meta-analysis
#11
Mirjam C L Peek, Muneer Ahmed, Alessandro Napoli, Sasha Usiskin, Rose Baker, Michael Douek
PURPOSE: Breast-conserving surgery is effective for breast cancer treatment but is associated with morbidity in particular high re-excision rates. We performed a systematic review and meta-analysis to assess the current evidence for clinical outcomes with minimally invasive ablative techniques in the non-surgical treatment of breast cancer. METHODS: A systematic search of the literature was performed using PubMed and Medline library databases to identify all studies published between 1994 and May 2016...
October 2, 2016: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/27566167/multi-element-bioimaging-of-arabidopsis-thaliana-roots
#12
Daniel Pergament Persson, Anle Chen, Mark G M Aarts, David E Salt, Jan K Schjoerring, Søren Husted
Better understanding of root function is central for the development of plants with more efficient nutrient uptake and translocation. We here present a method for multielement bioimaging at the cellular level in roots of the genetic model system Arabidopsis (Arabidopsis thaliana). Using conventional protocols for microscopy, we observed that diffusible ions such as potassium and sodium were lost during sample dehydration. Thus, we developed a protocol that preserves ions in their native, cellular environment...
October 2016: Plant Physiology
https://www.readbyqxmd.com/read/27503480/catheter-ablation-using-the-third-generation-cryoballoon-provides-an-enhanced-ability-to-assess-time-to-pulmonary-vein-isolation-facilitating-the-ablation-strategy-short-and-long-term-results-of-a-multicenter-study
#13
Arash Aryana, Marcin Kowalski, Padraig Gearoid O'Neill, Charles H Koo, Hae W Lim, Asif Khan, Robert B Hokanson, Mark R Bowers, David N Kenigsberg, Kenneth A Ellenbogen
BACKGROUND: Limited data exist on cryoablation of atrial fibrillation (Cryo-AF) using the newly available third-generation (Arctic Front Advance-Short Tip [AFA-ST]) cryoballoon. OBJECTIVE: In this multicenter study, we evaluated the safety and efficacy of Cryo-AF using the AFA-ST vs the second-generation (Arctic Front Advance [AFA]) cryoballoon. METHODS: We examined the procedural safety and efficacy and the short- and long-term clinical outcomes associated with a first-time Cryo-AF performed in 355 consecutive patients (254/355 [72%] with paroxysmal AF), using either the AFA-ST (n = 102) or the AFA (n = 253) cryoballoon catheters...
December 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/27455273/fiber-optic-sensors-for-temperature-monitoring-during-thermal-treatments-an-overview
#14
REVIEW
Emiliano Schena, Daniele Tosi, Paola Saccomandi, Elfed Lewis, Taesung Kim
During recent decades, minimally invasive thermal treatments (i.e., Radiofrequency ablation, Laser ablation, Microwave ablation, High Intensity Focused Ultrasound ablation, and Cryo-ablation) have gained widespread recognition in the field of tumor removal. These techniques induce a localized temperature increase or decrease to remove the tumor while the surrounding healthy tissue remains intact. An accurate measurement of tissue temperature may be particularly beneficial to improve treatment outcomes, because it can be used as a clear end-point to achieve complete tumor ablation and minimize recurrence...
2016: Sensors
https://www.readbyqxmd.com/read/27383214/ablative-focused-ultrasound-synergistically-enhances-thermally-triggered-chemotherapy-for-prostate-cancer-in-vitro
#15
Jaspreet S Arora, Hakm Y Murad, Stephen Ashe, Gray Halliburton, Heng Yu, Jibao He, Vijay T John, Damir B Khismatullin
High-intensity focused ultrasound (HIFU) can locally ablate biological tissues such as tumors, i.e., induce their rapid heating and coagulative necrosis without causing damage to surrounding healthy structures. It is widely used in clinical practice for minimally invasive treatment of prostate cancer. Nonablative, low-power HIFU was established as a promising tool for triggering the release of chemotherapeutic drugs from temperature-sensitive liposomes (TSLs). In this study, we combine ablative HIFU and thermally triggered chemotherapy to address the lack of safe and effective treatment options for elderly patients with high-risk localized prostate cancer...
September 6, 2016: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/27357333/safety-and-efficacy-of-cryoballoon-ablation-for-paroxysmal-atrial-fibrillation-in-japan%C3%A3-results-from-the-japanese-prospective-post-market-surveillance-study
#16
MULTICENTER STUDY
Ken Okumura, Kazuo Matsumoto, Yoshinori Kobayashi, Akihiko Nogami, Robert B Hokanson, Fred Kueffer
BACKGROUND: Outcomes of cryoballoon ablation for paroxysmal atrial fibrillation (PAF) have been reported in the Western countries but not in Japan. The CRYO-Japan PMS study was a single-arm, observational, multicenter, prospective study of the 2nd-generation cryoballoon Arctic Front Advance(TM). We evaluated device- and procedure-related complications and clinical outcomes at 6 months. METHODS AND RESULTS: The 616 patients (male, 72%; mean age, 63±11 years) were enrolled from 33 Japanese hospitals...
July 25, 2016: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/27354872/eccentric-scar-formation-around-a-pulmonary-vein-after-cryo-balloon-ablation-in-a-patient-with-atrial-fibrillation-a-case-report
#17
Kunihiko Kiuchi, Koji Fukuzawa, Akinori Matsumoto
The impact of a cryoballoon ablation is reported to be similar to that of a radiofrequency (RF) ablation in patients with atrial fibrillation. Delayed enhancement magnetic resonance imaging (DE-MRI) could visualize the scar region induced by the cryoballoon ablation as well as RF ablation. Cryoballoon ablation could induce extensive scar lesions around the PVs. However, the distribution of the scar lesions after the cryoballoon ablation has not been well discussed. We, herein, described a case with an eccentric scar distribution after cryoballoon ablation...
June 2016: Journal of Arrhythmia
https://www.readbyqxmd.com/read/27353290/biomolecular-environment-quantification-and-intracellular-interaction-of-multifunctional-magnetic-sers-nanoprobes
#18
Tina Büchner, Daniela Drescher, Virginia Merk, Heike Traub, Peter Guttmann, Stephan Werner, Norbert Jakubowski, Gerd Schneider, Janina Kneipp
Multifunctional composite nanoprobes consisting of iron oxide nanoparticles linked to silver and gold nanoparticles, Ag-Magnetite and Au-Magnetite, respectively, were introduced by endocytic uptake into cultured fibroblast cells. The cells containing the non-toxic nanoprobes were shown to be displaceable in an external magnetic field and can be manipulated in microfluidic channels. The distribution of the composite nanostructures that are contained in the endosomal system is discussed on the basis of surface-enhanced Raman scattering (SERS) mapping, quantitative laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) micromapping, and cryo soft X-ray tomography (cryo soft-XRT)...
August 15, 2016: Analyst
https://www.readbyqxmd.com/read/27193316/outcomes-after-cryoballoon-or-radiofrequency-ablation-for-persistent-atrial-fibrillation-a-multicentric-propensity-score-matched-study
#19
Serge Boveda, Rui Providência, Pascal Defaye, Dominique Pavin, Jean-Pierre Cebron, Frederic Anselme, Franck Halimi, Ziad Khoueiry, Nicolas Combes, Stephane Combes, Sophie Jacob, Jean-Paul Albenque, Pedro Sousa
PURPOSE: Recent data show no benefit of additional ablation beyond pulmonary vein isolation (PVI) in persistent atrial fibrillation (AF). Evidence suggests that radiofrequency energy (RF) and cryoballoon (CRYO) have comparable efficacy for PVI. We aimed to assess the outcomes after a single catheter ablation procedure, comparing PVI using CRYO vs. RF ablation for PVI plus additional ablation in a cohort of patients with persistent AF. METHODS: In this prospective multicenter propensity score-matched comparison, 59 consecutive patients undergoing CRYO ablation of persistent AF were matched to 59 patients treated with RF from November 2010 to June 2012...
November 2016: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/27187895/cost-comparison-of-radiofrequency-catheter-ablation-versus-cryoablation-for-atrial-fibrillation-in-hospitals-using-both-technologies
#20
Tina D Hunter, Swetha R Palli, John A Rizzo
OBJECTIVE: The objective of this study was to compare the cost of radiofrequency (RF) ablation vs cryoablation (Cryo) for atrial fibrillation (AF). METHODS: This retrospective cohort study used 2013-2014 records from the Premier Healthcare Database for adults with AF catheter ablation. Exclusions included non-AF ablation, surgical ablation, valve replacement or repair, or cardiac implant. Hospitals were required to perform ≥20 procedures using each technology, with the technology identifiable in at least 90% of cases...
October 2016: Journal of Medical Economics
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