Search Results
Results 251 - 300 of 1858
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Breda João Roberto - - 2010
To evaluate the results of intraoperative radiofrequency ablation with biatrial procedure in the treatment of chronic atrial fibrillation in patients with associated cardiac disease. Between February 2008 and May 2009, 15 consecutive patients were underwent mitral valve procedure plus modified radiofrequency biatrial ablation of chronic atrial fibrillation. The mean age ...
Komatsu Takashi - - 2010
We examined the relationship between the efficacy of combined treatment with antiarrhythmic drugs (AAD) plus enalapril for maintaining sinus rhythm and circadian variation in the onset of paroxysmal AF.Three hundred and forty-four patients with paroxysmal AF (239 men, mean age, 69 ± 11 years) who could be followed up ≥ ...
Baldasseroni Samuele - - 2010
The role of atrial fibrillation (AF) in older patients with heart failure (HF) is controversial because many variables seem to influence their outcome. We investigated the predictivity of AF in 3 age groups of outpatients with HF. We analyzed 8,178 outpatients enrolled in the Italian Network on Congestive Heart Failure ...
Klemm Hanno U - - 2010
The effect of angiotensin-converting enzyme inhibitors (ACE-I) and angiotensin II receptor blockers (ARBs) on the long-term outcome after pulmonary vein isolation (PVI) for paroxysmal atrial fibrillation (PAF) is unknown. This matched-pair study included 102 patients with PAF treated with ACE-I or ARBs (group 1) and 102 control subjects (group 2) ...
Howard Anthony J - - 2010
We describe a case of rapidly progressive and severely debilitating polyneuropathy in a patient with confirmed hypovitaminosis B1, consistent with dry beriberi. Crucially, this is a treatable condition, although sometimes with incomplete recovery, but it is probably under-recognized yet increasingly common given increasing levels of alcohol abuse in the western ...
Choi Andrew D - - 2010
Small, single-center studies suggest that catheter ablation of atrial fibrillation (AF) can improve ventricular function and reduce symptoms in patients with left ventricular (LV) dysfunction. However, ablation has not been compared with a pharmacologic strategy for AF. The authors evaluated patients with AF and symptomatic LV dysfunction (ejection fraction < ...
Misikova S - - 2010
OBJECTIVES: To evaluate the efficacy and safety of cryoablation compared with the radiofrequency (RF) method in the treatment of typical atrial flutter (AFL). METHODS: 12 patients with typical counterclockwise AFL underwent cryoablation of the cavotricuspid isthmus. Cryoablation was performed with a 9F catheter with an 8 mm tip electrode. Applications ...
Tao Hailong - - 2010
BACKGROUND: Catheter ablation can restore sinus rhythm in selected patients with atrial fibrillation (AF), but its preventive function for thromboembolic events (TE) is still underdetermined. METHODS: We retrospectively studied 520 consecutive patients with AF who were referred for circumferential pulmonary vein ablation. The incidence of late TE was investigated, and ...
Liu Fang-Yi - - 2010
PURPOSE: To compare the effectiveness of ultrasound (US)-guided percutaneous 915 MHz microwave (MW) ablation with the 2450 MHz MW ablation for large hepatocellular carcinoma (HCC) (>4 cm in diameter). MATERIALS AND METHODS: Patients with HCC >4 cm in diameter who underwent US-guided percutaneous MW ablation with curative intention between March ...
Alcaraz Raul - - 2010
The development of non-invasive tools able to provide valuable information about the effectiveness of a shock in external electrical cardioversion (ECV) is clinically relevant to enhance these protocols in the treatment of atrial fibrillation (AF). The present contribution analyzes the ability of a non-linear regularity index, such as sample entropy ...
Christiansen Christine Benn - - 2010
Dronedarone has been developed for treatment of atrial fibrillation (AF) or atrial flutter (AFL). It is an amiodarone analogue but noniodinized and without the same adverse effects as amiodarone. This is a review of 7 studies (DAFNE, ADONIS, EURIDIS, ATHENA, ANDROMEDA, ERATO and DIONYSOS) on dronedarone focusing on efficacy, safety ...
Tveit Arnljot - - 2010
It was our aim to study the levels of L-arginine, the substrate for nitric oxide and asymmetric dimethylarginine (ADMA), an endogenous inhibitor of nitric oxide synthase, and their relation to the maintenance of sinus rhythm after electrical cardioversion for atrial fibrillation (AF), as well as the effects of angiotensin receptor ...
Schopka Simon - - 2010
High intensity focused ultrasound (HIFU) energy has evolved as a new surgical tool to treat atrial fibrillation (AF). We evaluated safety and efficacy of AF ablation with HIFU and analyzed predictors of success in a prospective clinical study. From January 2007 to June 2008, 110 patients with AF and concomitant ...
Chierchia Gian Battista - - 2010
To evaluate the effects of pulmonary vein isolation (PVI) in terms of feasibility, safety and success rate on a midterm follow-up period in septuagenarians undergoing ablation with the Arctic Front Cryoballoon for atrial fibrillation (AF). We prospectively enrolled 21 patients aged 70 years or older (14 male; age 73 ± ...
Calvo Naiara - - 2010
Long-term endurance sport practice has been increasingly recognized as a risk factor for lone atrial fibrillation (AF). However, data on the outcome of circumferential pulmonary vein ablation (CPVA) in endurance athletes are scarce. The aim of the study was to evaluate the efficacy of CPVA in AF secondary to endurance ...
Saravanan Palaniappan - - 2010
Omega-3 polyunsaturated fatty acids (n-3 PUFA) have been reported to reduce the risk of sudden cardiac death presumed to be due to fatal ventricular arrhythmias, but their effect on atrial arrhythmias is unclear. Patients (n=108) undergoing coronary artery bypass graft surgery were randomly assigned to receive 2 g/d n-3 PUFA ...
Kadoya Shinichi - - 2010
OBJECTIVE: Recently, epicardial ablation on a beating heart has been conducted as a minimally invasive surgical procedure for atrial fibrillation. We have developed a suction support adapter with the aim of ensuring contact between the ablation probe and the atrial wall to obtain transmural coagulation, and we evaluated the effectiveness ...
Lo Li-Wei LW Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, - - 2010
The noncontact mapping (NCM) system possesses the merit of global endocardial recording for unipolar and activation mapping. We aimed to evaluate the unipolar electrogram characteristics and activation pattern over the bipolar complex fractionated atrial electrogram (CFAE) sites during atrial fibrillation (AF). Twenty patients (age 55 +/- 11 years old, 15 ...
Mansour Moussa - - 2010
BACKGROUND: Pulmonary vein isolation (PVI) achieved using a cryoballoon has been shown to be safe and effective. This treatment modality has limited effectiveness for treatment of persistent atrial fibrillation (AF). OBJECTIVE: The purpose of this study was to evaluate a combined approach using a cryoballoon for treatment of PVI and ...
Kataoka Tetsuro - - 2010
BACKGROUND: Previous studies showed that some parameters, including left atrium diameter and left atrium volume index (LAVI), predicted the success of sinus conversion. However, no previous studies have investigated the association of sinus conversion with LAVI and histopathological findings. This study was designed to investigate the relationship among LAVI, pathological ...
Snowdon Richard L - - 2010
INTRODUCTION: Ablation for atypical atrial flutter (AFL) is often performed during tachycardia, with termination or noninducibility of AFL as the endpoint. Termination alone is, however, an inadequate endpoint for typical AFL ablation, where incomplete isthmus block leads to high recurrence rates. We assessed conduction block across a low lateral right ...
Kwak Jae-Jin - - 2010
BACKGROUND: We investigated the efficiency and convenience of a continuous warfarinization (CW) strategy during the periprocedural period of radiofrequency catheter ablation (RFCA) of atrial fibrillation (AF) in comparison with the classic strategy of switching to heparin (SH). METHODS AND RESULTS: We compared CW (n = 49) and SH (n = ...
Singh Sheldon M - - 2010
INTRODUCTION: While able to achieve clinical success, the current step-wise approach to persistent atrial fibrillation (AF) ablation requires considerable "substrate" ablation and frequently mandates multiple procedures to address consequent atrial tachycardias (ATs). An alternative strategy minimizing the amount of ablation while maintaining clinical success would be desirable. We hypothesize that ...
Kron Jordana - - 2010
BACKGROUND: Minimally invasive thoracoscopic procedures have evolved for surgical treatment of atrial fibrillation (AF). The spectrum and management of arrhythmias after minimally invasive epicardial radiofrequency ablation of the pulmonary vein (PV) antrum have not been well studied. OBJECTIVE: The aim of this study was to describe the spectrum and treatment ...
Kumagai Koji - - 2010
INTRODUCTION: Elimination of transient pulmonary vein recurrences (dormant PVs) induced by an ATP injection and ablation at the PV carina region is an effective strategy for atrial fibrillation (AF) ablation. The relationship between dormant PVs and the PV carina region has not been evaluated. METHODS: A total of 212 consecutive ...
Henningsen Kristoffer Mads - - 2010
AIM: To study plasma YKL-40 in patients with atrial fibrillation (AF) treated with radiofrequency (RF) catheter ablation and to assess the predictive role of plasma YKL-40 and its changes after restoration of sinus rhythm (SR). METHODS: Forty-six patients (mean age 55 years, range 31-81) with paroxysmal/persistent AF were treated with ...
Kurotobi Toshiya - - 2010
The presence of multiple arrhythmogenic sources may be associated with the perpetuation of atrial fibrillation (AF). In this study, we investigated the hypothesis that multiple foci might be involved in the development of AF persistency. Two hundred fourteen consecutive patients with AF undergoing catheter ablation were enrolled in this study. ...
Cappato Riccardo - - 2010
The purpose of this study was to provide an updated worldwide report on the methods, efficacy, and safety of catheter ablation of atrial fibrillation (AF). A questionnaire with 46 questions was sent to 521 centers from 24 countries in 4 continents. Complete interviews were collected from 182 centers, of which ...
Kawai T - - 2010
To evaluate the efficacy of radiofrequency lung ablation with transbronchial saline injection. The bilateral lungs of eight living swine were used. A 13-gauge bone biopsy needle was inserted percutaneously into the lung, and 1 ml of muscle paste was injected to create a tumor mimic. In total, 21 nodules were ...
Opel Aaisha - - 2010
BACKGROUND: The treatment of choice for atrioventricular nodal reentrant tachycardia (AVNRT) is catheter ablation of the atrioventricular nodal slow pathway. OBJECTIVE: The purpose of this study was to ascertain whether cryoablation (Cryo) with 6-mm-tip catheters is as effective as radiofrequency ablation (RF). METHODS: Patients who had catheter ablation for AVNRT ...
Piccini Jonathan P - - 2009
BACKGROUND: Catheter ablation is an established yet evolving nonpharmacologic intervention for the maintenance of sinus rhythm in patients with atrial fibrillation (AF). The efficacy and safety of pulmonary vein isolation (PVI) compared with medical therapy remain in question. METHODS AND RESULTS: We conducted a meta-analysis of all randomized, controlled trials ...
Koa-Wing Michael - - 2009
INTRODUCTION: Robotic remote catheter ablation potentially provides improved catheter-tip stability, which should improve the efficiency of radiofrequency energy delivery. Percentage reduction in electrogram peak-to-peak voltage has been used as a measure of effectiveness of ablation. We tested the hypothesis that improved catheter-tip stability of robotic ablation can diminish signals to ...
Alcaraz Raúl - - 2009
The development of non-invasive tools able to provide valuable information about the effectiveness of a shock in external electrical cardioversion (ECV) is clinically relevant to enhance these protocols in the treatment of atrial fibrillation (AF). The present contribution analyzes the ability of a non-linear regularity index, such as sample entropy ...
Kim Michael H - - 2009
STUDY OBJECTIVE: To assess patterns and predictors of discontinuation of rhythm-control drug therapy in managed care patients with newly diagnosed atrial fibrillation and the direct medical costs of atrial fibrillation in these patients. DESIGN: Retrospective cohort study. DATA SOURCE: PharMetrics Patient-Centric Database. PATIENTS: A total of 3549 adults with a ...
Risius Tim - - 2009
External cardioversion is an established and very important tool to terminate symptomatic atrial flutter. The superiority of the biphasic waveform has been demonstrated for atrial flutter, but whether electrode position affects the efficacy of cardioversion in this population is not known. The aim of this trial was to evaluate whether ...
Vollmann Dirk - - 2009
BACKGROUND: Conventional catheter ablation of cavotricuspid isthmus (CTI)-dependent atrial flutter is a widely applied standard therapy. Remote magnetic catheter navigation (RMN) may provide benefits for different ablation procedures, but its efficacy for CTI ablation has not been evaluated in a randomized, controlled trial. METHODS AND RESULTS: Ninety patients undergoing de ...
Linhart Markus - - 2009
INTRODUCTION: Ablation of pulmonary veins (PV) is an established therapeutic option for patients with symptomatic drug-refractory paroxysmal atrial fibrillation (AF). Radiofrequency (RF) is currently the most widespread energy source for PV ablation. Cryothermal energy applied with a cryoballoon technique as an alternative has recently evolved. METHODS AND RESULTS: In a ...
Kowey Peter R - - 2009
BACKGROUND: Postoperative atrial arrhythmias are common and are associated with considerable morbidity. This study was designed to evaluate the efficacy and safety of vernakalant for the conversion of atrial fibrillation (AF) or atrial flutter (AFL) after cardiac surgery. METHODS AND RESULTS: This was a prospective, randomized, double-blind, placebo-controlled trial of ...
Jiang Chen-Yang - - 2009
INTRODUCTION: Catheter ablation for paroxysmal AF (PAF) is limited by an unacceptable recurrence rate, mainly due to pulmonary vein (PV) reconnection. Strategies to minimize reconnection include adenosine infusion and also a waiting period of 30 minutes after PV isolation. The aim of the present study was to assess whether these ...
Kim M H - - 2009
OBJECTIVE: Rhythm- and rate-control therapies are an essential part of atrial fibrillation (AF) management; however, the use of existing agents is often limited by the occurrence of adverse events. The aim of this study was to evaluate suspected adverse events and adverse event monitoring, and associated medical costs, in patients ...
Baman Timir S - - 2009
It is unclear whether early restoration of sinus rhythm in patients with persistent atrial arrhythmias after catheter ablation of atrial fibrillation (AF) facilitates reverse atrial remodeling and promotes long-term maintenance of sinus rhythm. The purpose of this study was to determine the relationship between the time to restoration of sinus ...
Bright Tim - - 2009
Argon plasma coagulation (APC) has been used to ablate Barrett's esophagus, however, its role in the management of non-dysplastic Barrett's esophagus is uncertain. The purpose of this study is to determine the efficacy of endoscopic argon plasma coagulation (APC) for ablation of Barrett's esophagus in a prospective randomized controlled trial ...
Di Biase Luigi - - 2009
BACKGROUND: Robotic catheter navigation and ablation either with magnetic catheter driving or with electromechanical guidance have emerged in the recent years for the treatment of atrial fibrillation. OBJECTIVE: The aim of this study was to compare our center's experience of atrial fibrillation ablation using the Hansen Robotic Medical System with ...
Yoshioka I - - 2009
Postoperative atrial fibrillation (AF) is the most common complication after coronary artery bypass grafting (CABG). We have reported that the intra- and perioperative administration of landiolol has a preventive effect on postoperative AF in the early postoperative period after CABG surgery. The purpose of this study was to investigate the ...
Berber Onur - - 2010
The treatment of a congenital venous malformation using endovenous radiofrequency ablation in a patient is described. The patient initially underwent two treatments of foam sclerotherapy with moderate success. Later the main feeding vessel of the venous malformation became evident on examination with venous duplex and was identified as the great ...
Puwanant Sarinya - - 2009
OBJECTIVES: The goals of this study were to determine: 1) if low-risk patients assessed by a CHADS(2) score, a clinical scoring system quantifying a risk of stroke in patients with atrial fibrillation (AF), require a routine screening transesophageal echocardiogram (TEE) before pulmonary vein isolation (PVI); and 2) the relationship of ...
Bhatia Nisha L - - 2010
A 72-year old male, referred for percutaneous atrial fibrillation ablation, was found to have cor triatriatum during routine, pre-procedural transesophageal echocardiography. Accessing the superior pulmonary venous atrium and wide area circumferential ablation was guided by intracardiac echocardiography and performed without complications. The patient remains symptom-free, off anti-arrhythmic drug therapy, for ...
Mauermann William J - - 2010
BACKGROUND: Atrial fibrillation (AF) occurs in 20%-50% of patients after cardiac surgery and is associated with increased morbidity and mortality. Corticosteroids are reported to decrease the incidence of postoperative AF, presumably by attenuating inflammation caused by surgery and cardiopulmonary bypass (CPB). We hypothesized that hemofiltration during CPB, which may attenuate ...
Narita Sumito - - 2010
BACKGROUND: Atrial tachycardia (AT) is sometimes difficult to eliminate by radiofrequency ablation (RFA), but the EnSite array (EA) visualizes the beat-to-beat virtual activation of any tachycardia. METHODS AND RESULTS: The 51 patients with 74 ATs (mean age 57+/-18 years, 28 males) undergoing EA-guided RFA were included; 14 patients had had ...
Duytschaever Mattias - - 2010
OBJECTIVES: We aimed to investigate the feasibility, efficacy, and safety of the pulmonary vein ablation catheter (PVAC) catheter (a novel multielectrode catheter using duty-cycled bipolar and unipolar radiofrequency energy, Medtronic, Minneapolis, MN, USA) to completely isolate the pulmonary veins (PVs). METHODS: Twenty-seven patients (60 +/- 8 years) with paroxysmal atrial ...
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