keyword
MENU ▼
Read by QxMD icon Read
search

Cryo balloon

keyword
https://www.readbyqxmd.com/read/28733782/catheter-ablation-of-atrial-fibrillation-an-overview-for-clinicians
#1
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...
July 21, 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
#2
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/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
#3
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...
June 15, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28506919/novel-dyeless-and-fluoro-less-approach-to-cryoballoon-pulmonary-vein-occlusion-assessment
#4
Boaz Avitall, Arthur Kalinski, G Stephen Kocheril, Timothy G Laske, Nicolas Coulombe
BACKGROUND: Pulmonary vein (PV) occlusion is essential for PV isolation (PVI) using the cryoballoon. Currently occlusion is arbitrarily determined using fluoroscopy and contrast media. This study aimed to create an objective measure without utilizing excessive fluoroscopy and using no contrast media. OBJECTIVE: To ensure PV occlusion without fluoroscopy and contrast dye. METHODS: In 4 in vivo hearts 113 PV occlusions were tested with a 50% cold dye saline mix at 4°C...
May 13, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28216515/particular-morphology-of-inferior-pulmonary-veins-and-difficulty-of-cryoballoon-ablation-in-patients-with-paroxysmal-atrial-fibrillation
#5
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/28113454/cryo-balloon-catheter-localization-based-on-a-support-vector-machine-approach
#6
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
#7
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/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/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
#9
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/27354872/eccentric-scar-formation-around-a-pulmonary-vein-after-cryo-balloon-ablation-in-a-patient-with-atrial-fibrillation-a-case-report
#10
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/26978663/cryo-balloon-catheter-localization-based-on-a-support-vector-machine-approach
#11
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...
August 2016: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/26856381/real-time-mri-guided-cardiac-cryo-ablation-a-feasibility-study
#12
Eugene G Kholmovski, Nicolas Coulombe, Joshua Silvernagel, Nathan Angel, Dennis Parker, Rob Macleod, Nassir Marrouche, Ravi Ranjan
INTRODUCTION: MRI-based ablation provides an attractive capability of seeing ablation-related tissue changes in real time. Here we describe a real-time MRI-based cardiac cryo-ablation system. METHODS: Studies were performed in canine model (n = 4) using MR-compatible cryo-ablation devices built for animal use: focal cryo-catheter with 8 mm tip and 28 mm diameter cryo-balloon. The main steps of MRI-guided cardiac cryo-ablation procedure (real-time navigation, confirmation of tip-tissue contact, confirmation of vessel occlusion, real-time monitoring of a freeze zone formation, and intra-procedural assessment of lesions) were validated in a 3 Tesla clinical MRI scanner...
May 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/26835102/balloon-devices-for-atrial-fibrillation-therapy
#13
Andreas Metzner, Erik Wissner, Tina Lin, Feifan Ouyang, Karl-Heinz Kuck
Ablation of atrial fibrillation (AF) is an established treatment option for symptomatic patients refractory to antiarrhythmic medication. In patients with paroxysmal AF, ablation can be offered as first-line therapy when performed in an experienced centre. The accepted cornerstone for all ablation strategies is isolation of the pulmonary veins. However, it is still challenging to achieve contiguous, transmural, permanent lesions using radio-frequency current (RFC) based catheters in conjunction with a three-dimensional mapping system and the learning curve remains long...
May 2015: Arrhythmia & Electrophysiology Review
https://www.readbyqxmd.com/read/26475792/anatomical-predictors-for-successful-pulmonary-vein-isolation-using-balloon-based-technologies-in-atrial-fibrillation
#14
COMPARATIVE STUDY
Alexey Tsyganov, Jan Petru, Jan Skoda, Lucie Sediva, Pavel Hala, Jiri Weichet, Marek Janotka, Milan Chovanec, Petr Neuzil, Vivek Y Reddy
PURPOSE: We evaluated the correlation between pulmonary venous (PV) anatomy and acute and long-term success of PV isolation (PVI) with two balloon-based ablation catheter techniques. METHODS: One hundred consecutive patients were analyzed in two equal groups treated with either the second-generation cryoballoon (CRYO) catheter or the visually guided laser ablation (VGLA) catheter. All patients underwent multi-detector computed tomography (CT) imaging. The primary and secondary efficacy endpoints were the procedural achievement of proven electrical isolation of all veins and freedom from atrial fibrillation (AF) within a 1-year follow-up period, respectively...
December 2015: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/25783791/prediction-of-mid-term-outcome-after-cryo-balloon-ablation-of-atrial-fibrillation-using-post-procedure-high-sensitivity-troponin-level
#15
Tolga Aksu, Sukriye Ebru Golcuk, Tümer Erdem Guler, Kivanç Yalin, Ismail Erden
OBJECTIVE: High-sensitivity troponin I (hsTnI) assays lead to, among other things, improvement in the detection of myocardial injury and improved risk stratification of patients with atrial fibrillation (AF). The aim of this study was to investigate the association between post-procedure cardiac biomarkers and clinical outcome in patients undergoing cryo-balloon ablation (CA) for AF. METHODS: A total of 57 patients (mean age 55.1 ± 12.2 years, 50.9% female) with symptomatic paroxysmal AF underwent the CA procedure...
July 2015: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/25227868/acute-procedural-and-cryoballoon-characteristics-from-cryoablation-of-atrial-fibrillation-using-the-first-and-second-generation-cryoballoon-a-retrospective-comparative-study-with-follow-up-outcomes
#16
COMPARATIVE STUDY
Arash Aryana, Shemsa Morkoch, Sean Bailey, Hae W Lim, Rahmani Sara, André d'Avila, P Gearoid O'Neill
PURPOSE: There is limited data available on the safety and efficacy of the second-generation cryoballoon (CB-2) for cryoablation of atrial fibrillation (Cryo-AF). We evaluated the procedural, biophysical, and clinical outcomes of Cryo-AF in a large patient cohort using CB-2 as compared with the first-generation cryoballoon (CB-1). METHODS: Three-hundred and forty consecutive patients undergoing Cryo-AF with CB-1 (n = 140) and CB-2 (n = 200) were retrospectively evaluated...
November 2014: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/24774871/limitations-of-biomarkers-serum-levels-during-pulmonary-vein-isolation
#17
Maciej Wojcik, Sebastien Janin, Malte Kuniss, Alexander Berkowitsch, Damir Erkapic, Sergey Zaltsberg, Katherina Madlener, Andrzej Wysokinski, Christian W Hamm, Heinz F Pitschner, Thomas Neumann
INTRODUCTION AND OBJECTIVES: Several biomarkers have been used for evaluation and quantification of myocardial injury after effective ablation. We studied possible different thermal stability and usability of the proteins released by cardiac cells injured by different energy sources. METHODS: Firstly, we tested in vitro thermal stability of creatinine kinase (CK), myocardial bound creatinine kinase (CKMB), cardiac troponins I (cTnI) and cardiac troponins T (cTnT) in collected blood samples from 15 patients (pts) with confirmed ST-segment elevated myocardial infarction (STEMI)...
February 2011: Revista Española de Cardiología
https://www.readbyqxmd.com/read/24740749/12-month-primary-patency-rates-of-contemporary-endovascular-device-therapy-for-femoro-popliteal-occlusive-disease-in-6-024-patients-beyond-balloon-angioplasty
#18
REVIEW
Konstantinos Marmagkiolis, Abdul Hakeem, Nishit Choksi, Malek Al-Hawwas, Mohan Mallikarjuna Rao Edupuganti, Massoud A Leesar, Mehmet Cilingiroglu
BACKGROUND: Endovascular approach to superficial femoral artery (SFA) disease, the most common cause of symptomatic peripheral arterial disease, remains fraught with high failure rates. Newer devices including second-generation nitinol stents, drug-coated stents, drug-coated balloons, covered stents, cryo-therapy, LASER, and directional atherectomy have shown promising results. Clinical equipoise still persists regarding the optimal selection of devices, largely attributable to the different inclusion criteria, study population, length of lesions treated, definition of "patency" and "restenosis," and follow-up methods in the pivotal trials...
October 1, 2014: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/24607412/cryo-em-analysis-of-the-organization-of-bcla-and-bxpb-in-the-bacillus-anthracis-exosporium
#19
Cynthia M Rodenburg, Sylvia A McPherson, Charles L Turnbough, Terje Dokland
Bacillus anthracis and other pathogenic Bacillus species form spores that are surrounded by an exosporium, a balloon-like layer that acts as the outer permeability barrier of the spore and contributes to spore survival and virulence. The exosporium consists of a hair-like nap and a paracrystalline basal layer. The filaments of the nap are comprised of trimers of the collagen-like glycoprotein BclA, while the basal layer contains approximately 20 different proteins. One of these proteins, BxpB, forms tight complexes with BclA and is required for attachment of essentially all BclA filaments to the basal layer...
April 2014: Journal of Structural Biology
https://www.readbyqxmd.com/read/24521482/retrieval-of-various-aspirated-foreign-bodies-by-flexible-cryoprobe-in-vitro-feasibility-study
#20
Oren Fruchter, Mordechai R Kramer
INTRODUCTION: Retrieval of aspirated foreign bodies (FB) by flexible bronchoscopy is challenging. Many types of ancillary equipment, including forceps, grasping claws, snares, balloon-tipped catheters and magnets, have been developed to allow FB extraction using flexible bronchoscopes. The ability to remove a FB by flexible cryoprobe (cryoextraction) depends on the cryoadhesive properties of the retrieved object, which in turn depends on its physical properties. OBJECTIVES: Our aim was to explore ex vivo on a lung model the cryoadhesive properties of various commonly aspirated objects...
April 2015: Clinical Respiratory Journal
keyword
keyword
27406
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"