Search Results
Results 351 - 400 of 1856
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Kuniss Malte - - 2009
Recent studies have shown that cryoablation and radiofrequency (RF) ablation are comparable with regard to success rates and safety in the treatment of common atrial flutter (AFL). Long-term success requires persistence of bidirectional conduction block (BCB) in the inferior cavotricuspid isthmus (CTI). The purpose of this study was to determine ...
De Groot Natasja M S - - 2009
INTRODUCTION: Atrial tachyarrhythmias (AT) frequently develop later after a Fontan operation and can be successfully treated by ablative therapy. However, new arrhythmias often develop. METHODS AND RESULTS: Consecutive AT emerging in a Fontan patient were ablated using three-dimensional electro-anatomical mapping. During a 6-year period, nine different AT were ablated, including ...
Mataraci Ilker - - 2010
We have reviewed the results of radiofrequency ablation (RFA) in patients with rheumatic valve disease. Sixty-seven patients underwent operation for rheumatic valvular disease and RFA concomitantly with the planned procedure. Twenty-two (32.8%) were male and 45 (67.2%) female. The mean duration of atrial fibrillation (AF) was 47.4+/-30.4 months (12-192). Logistic ...
Sakamoto Shun-ichiro - - 2010
Surgical ablation of ganglionated plexi has been proposed to increase efficacy of surgery for atrial fibrillation. This experimental canine study examined electrophysiologic attenuation and recovery of atrial vagal effects after ganglionated plexi ablation alone or with standard surgical lesion sets for atrial fibrillation. Dogs were divided into 3 groups: group ...
Roux Jean-François JF Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA 19104, - - 2009
Atrial arrhythmias are common early after atrial fibrillation (AF) ablation. We hypothesized that empirical antiarrhythmic drug (AAD) therapy for 6 weeks after AF ablation would reduce the occurrence of atrial arrhythmias. We randomized consecutive patients with paroxysmal AF undergoing ablation to empirical antiarrhythmic therapy (AAD group) or no antiarrhythmic therapy ...
Alvarez Miguel - - 2009
Nonfluoroscopic intracardiac navigation systems reduce the dose of radiation in most ablation procedures. However, they have not been sufficiently studied as a sole guidance tool for electrode catheter handling. The purpose of our study was to assess the feasibility and safety of catheter ablation for atrioventricular nodal re-entrant tachycardia (AVNRT) ...
Ehrlich Joachim R - - 2009
Over the past decades, interest in atrial fibrillation (AF) has greatly increased, and the understanding of its pathophysiology and potential treatment modalities is constantly growing. This article summarizes findings that the authors deem milestones in the clinical management of the arrhythmia. The first milestone was the observation that AF is ...
Nigro Gerardo - - 2009
We performed a two-year follow-up comparative study of long-term electrical parameters between the right atrial appendage (RAA) and Bachmann's Bundle (BB) stimulation in myotonic dystrophy type 1 (MD1) patients. Twenty-five MD1 patients (18 men; age: 54 +/- 13 years) with no difference in the electrical parameters between the RAA site ...
Corrado Andrea - - 2010
BACKGROUND: Pulmonary veins (PVs) have been shown to represent the most frequent sites of ectopic beats initiating paroxysmal atrial fibrillation (AF). However, additional non-PV triggers, arising from different areas, have been reported as well. One of the most common non-PV sites described is the superior vena cava. AIMS: The purpose ...
Naji Franjo - - 2009
BACKGROUND: Amiodarone is effective in preventing atrial fibrillation (AF). Recently, the possible antiarrhythmic effects of statins have been revealed. We hypothesized that statins added to amiodarone may reduce the recurrence rate of AF after successful electrical cardioversion (EC). MATERIAL/METHODS: The retrospective analysis included 198 consecutive patients (63+/-10 years; 56% men) ...
Laspas Fotios - - 2009
AIM: To evaluate the efficacy and complications of computed tomography (CT)-guided radiofrequency ablation (RFA) of unresectable hepatocellular carcinoma (HCC). METHODS: A retrospective study of 282 patients (231 males, 51 females, age range: 44-76 years, mean age: 62 years) with HCC (322 lesions) who had been treated by CT-guided RFA over ...
Kneeland Patrick P - - 2009
There are few data on the use of catheter ablation for atrial fibrillation (AF) in the United States. We analyzed data from the National Hospital Discharge Survey (NHDS) to examine trends in the rate of catheter ablation for hospitalized patients with AF over a 15-year period. To examine rates of ...
Vassiliou Melina C - - 2010
INTRODUCTION: Endoscopic radiofrequency ablation (ERFA) is being evaluated as definitive treatment for patients with Barrett's esophagus (BE). Guidelines have yet to be developed for the application of this technology to patients with ultralong-segment BE (ULBE, > or = 8 cm). This study reports a single institution's experience with ERFA of ...
Matsuo Seiichiro - - 2009
OBJECTIVES: This study evaluated the role of pre-procedural clinical variables to predict procedural and clinical outcomes of catheter ablation in patients with long-lasting persistent atrial fibrillation (AF). BACKGROUND: Catheter ablation of persistent AF remains a challenging task. METHODS: Catheter ablation was performed in 90 patients (76 men, age 57 +/- ...
Capito Carmen - - 2009
PURPOSE: To retrospectively compare fluorine 18 ((18)F) fluoro-L-dopa positron emission tomography (PET) and pancreatic venous sampling (PVS) in the preoperative differentiation of diffuse from focal congenital hyperinsulinism (CHI) and localization of focal lesions. MATERIALS AND METHODS: This study was approved by the institutional ethical committee, and informed consent for the ...
See Vincent Y - - 2009
BACKGROUND: Atrial arrhythmias (AAs) including atrial fibrillation (AF) and atrial tachycardia (AT) are often observed after cardiothoracic surgery. Our aim was to evaluate the prevalence and mechanism of AAs after lung transplantation. METHODS AND RESULTS: All patients (n=127) after bilateral sequential lung transplantation followed at our institution over 20 years ...
Gasparovic Hrvoje - - 2010
Atrial fibrillation (AF) remains the most commonly observed complication following myocardial revascularisation surgery. We aimed to evaluate the clinical utility of N-terminal fragment of the brain natriuretic peptide (NT-pro-BNP), troponin T, transcoronary lactate gradient (TCLG) and C-reactive protein (CRP) as predictors of AF in patients undergoing isolated coronary artery bypass ...
Wang Wei - - 2009
RATIONALE AND OBJECTIVES: In patients with adenomyosis, the severity of symptoms correlates roughly with the extent of adenomyosis. Thus, it was hypothesized that the ablation of enough volume of adenomyosis might alleviate symptoms. The aim of this study was to investigate the safety and efficacy of high-intensity focused ultrasound (HIFU) ...
Hegbom Finn - - 2009
To evaluate the effects of the angiotensin II type 1 receptor blocker candesartan on P-wave signal-averaged electrocardiogram (P-SAECG) after electrical cardioversion in patients with atrial fibrillation (AF). One hundred and seventy-one patients with persistent AF were randomized to receive candesartan 8 mg/day or placebo for 3-6 weeks before and candesartan ...
Schmidt Boris - - 2009
AIMS: High-intensity focused ultrasound (HIFU) applied via a balloon catheter (BC) is a novel technology for simplified pulmonary vein isolation (PVI). Safety and efficacy of the third generation HIFU-BC were assessed. METHODS AND RESULTS: In 22 patients (10 male, mean age 65 +/- 6 years) with paroxysmal atrial fibrillation (PAF), ...
Efremidis Michael - - 2009
OBJECTIVE: The present study aimed to compare the effectiveness and safety of the potential- and the anatomic-guided approach for slow pathway ablation in patients with recurrent episodes of symptomatic common type atrioventricular (AV) nodal reentrant tachycardia. METHODS: Two hundred and twenty-eight patients were randomly assigned to undergo either a potential- ...
Schmidt Martin - - 2009
AIMS: Pulmonary vein antrum isolation (PVAI) plays a pivotal role in the comprehensive treatment of atrial fibrillation (AF). The need for effective anticoagulation bridging following PVAI is associated with significant vascular complication rates and increased costs. We investigated the safety of PVAI in patients with therapeutic international normalized ratios (INR) ...
Albrecht Alvaro - - 2009
OBJECTIVE: Chronic permanent atrial fibrillation is often due to mitral valve disease. The Cox maze procedure is the gold standard for treating this arrhythmia. Simpler techniques and ablation methods should have their efficacy tested in clinical practice. Our objective was to evaluate the effectiveness of surgical pulmonary vein isolation as ...
Ata Yusuf - - 2009
OBJECTIVES: Atrial fibrillation (AF) is still the most frequent rhythm disturbance after coronary artery surgery. Our aim was to evaluate the predictive value of preoperative brain natriuretic peptide (BNP) levels for determining postoperative new-onset AF in patients undergoing isolated first-time coronary artery bypass grafting (CABG) using cardiopulmonary bypass (CPB). METHODS: ...
Ussia Gian Paolo - - 2009
BACKGROUND: Percutaneous closure of the left atrial appendage (LAA) is a novel alternative for the treatment of patients with atrial fibrillation (AF) and with a high risk of stroke who are not eligible for long-term anticoagulation therapy. The aim of this study was to asses the safety, feasibility, and long-term ...
Tsai Wen-Chin - - 2009
CFAEs and the Voltage. Introduction: Catheter ablation of atrial fibrillation (AF) can be guided by the identification of complex fractionated atrial electrograms (CFAEs). We aimed to study the prediction of the CFAEs defined by an automatic algorithm in different atrial substrates (high voltage areas vs low voltage areas). Methods and ...
Bazan Victor - - 2010
BACKGROUND: Complete conduction block of the cavotricuspid isthmus (CTI) reduces atrial flutter recurrences after ablation. Incremental rapid pacing may distinguish slow conduction from complete CTI conduction block. METHODS AND RESULTS: Fifty-two patients (67 +/- 9 years) undergoing 55 CTI ablation procedures were included. With ablation, double potentials (DPs) separated by ...
Heidt M C - - 2009
BACKGROUND: Atrial fibrillation (AF) is a common complication after coronary artery bypass grafting operation (CABG). Experimental data have shown antiarrhythmic effects of n-3 polyunsaturated fatty acids (PUFA) on myocardial cells. Orally administered PUFA could significantly reduce the rate of postoperative AF. We assessed the efficacy of PUFA for the prevention ...
Abecasis Jo??o - - 2009
AIMS: Catheter ablation (CA) of atrial fibrillation (AF) might be a definitive curative therapy for selected groups of patients (pts). However, current ablation protocols are not standardized and predictors of CA success and sinus rhythm maintenance are not clearly defined. To evaluate whether left atrium (LA) volume quantification provided by ...
Peyser Amos - - 2009
BACKGROUND: Radiofrequency ablation (RFA) has a success rate of 70% to 90% in the treatment of osteoid osteoma (OO). Failures are due to malpositioning of probes or incomplete ablation, possibly related to conventional probes' small heating diameter (range, .5-.8 cm). Cooled-tip probes have a larger heating distance, ablating up to ...
Tan Hong-wei - - 2010
Catheter ablation is effective in treating patients with atrial fibrillation (AF). The aim of the study was to evaluate the safety, efficacy and outcome of catheter ablation for AF in octogenarians. 377 consecutive patients were divided into three groups based on age: ≥80 years (group 1; n=49), 70-79 years (group ...
Yamada Takumi - - 2009
BACKGROUND: Vagal denervation during pulmonary vein isolation (PVI) may reduce paroxysmal atrial fibrillation (PAF) recurrences. Valid predictors of late PAF recurrence after PVI were examined. METHODS AND RESULTS: Successful segmental (S-PVI) or circumferential PVI (C-PVI) was achieved in 120 consecutive PAF patients. The 24-h Holter recordings were obtained before and ...
Ricci Renato P - - 2009
INTRODUCTION: Patients with pacemakers and implantable defibrillators (ICD) may experience asymptomatic atrial fibrillation (AF), detected with a delay depending on the in-person follow-up schedule. Home monitoring (HM) remote control with automatic alerts for AF may drive early anticoagulation, potentially reducing stroke risk. METHODS AND RESULTS: A sample of 136 pacemaker ...
Lo Li-Wei - - 2009
BACKGROUND: The left atrial (LA) size is an important predictor of atrial fibrillation (AF) procedural termination and the long-term outcome. We sought to evaluate the long-term outcome in regard to the LA size and procedural termination. METHODS: Eighty-seven consecutive chronic AF patients (72 males, 53 +/- 10 years) underwent 3D ...
Reyes Guillermo - - 2009
To assess the electrical sinus rhythm (SR) recovery and the mechanical effectiveness of the atrial contraction by echocardiography is essential in patients undergoing atrial fibrillation (AF) surgery. Between September 2006 and May 2008, patients with chronic AF (n=33; permanent=23 or paroxysmal=10) underwent mitral surgery and surgical cryoablation for AF. Exclusion ...
Choi Yong Seon - - 2009
OBJECTIVES: Considering the role of inflammatory reaction on the pathogenesis of atrial fibrillation (AF), the aim of this study is to investigate perioperative risk factors of AF, as well as to validate the predictive value of high-sensitive C-reactive protein (hsCRP), and transfusion requirement following off-pump coronary bypass surgery (OPCAB) in ...
Terasawa Teruhiko - - 2009
BACKGROUND: Atrial fibrillation is the most common sustained arrhythmia. Medical treatment often fails to control symptoms. PURPOSE: To compare the benefits and harms of radiofrequency catheter ablation and medical therapy in adults with atrial fibrillation. DATA SOURCES: MEDLINE and the Cochrane Central Register of Controlled Trials (2000 to December 2008) ...
Bastani Hamid - - 2009
AIMS: The purpose of this study was to evaluate the safety and efficacy of cryoablation in a large series of patients with typical (slow-fast) atrioventricular nodal reentrant tachycardia (AVNRT). METHODS AND RESULTS: Between 2003 and 2007, 312 patients with typical AVNRT--median age of 53 years (range 10-92), 200 women (64%)--underwent ...
Roy Soham - - 2010
The aim of this study was to evaluate the fire risk for an electrosurgical device (Bovie) as compared with a bipolar radiofrequency ablation wand (Coblator) in a mechanical model of oropharyngeal surgery. An endotracheal tube was inserted into the cranial end of a degutted, whole raw chicken through which 100% ...
Hingorani Anil P - - 2009
To evaluate potential predictive factors associated with success or failure of incompetent perforating veins (IPVs) treated with radio-frequency stylet (RFS). Over the last 12 months in this observational study, 38 consecutive patients with various degrees of venous insufficiency and IPVs underwent 48 office-based radio-frequency ablation procedures (1 - C 3; ...
Suzuki Shinya - - 2009
Many large-scale randomized control trials (RCTs) have been performed regarding treatment strategy in atrial fibrillation (AF) in Western countries and also in Japan. However, limited data are available concerning real-world relationships between the treatment strategy and prognosis of AF patients. Out of a prospective cohort of The Shinken Database 2004 ...
Edgerton James R - - 2009
BACKGROUND: A minimally invasive surgery for treatment of atrial fibrillation was developed with bilateral pulmonary vein isolation, mapping, and ablation of the ganglionic plexi and excision of the left atrial appendage. A prospective multicenter registry was created to evaluate the outcomes. METHODS: The procedure was performed through bilateral minithoracotomies with ...
Fleischmann Kirsten E - - 2009
BACKGROUND: In the Mode Selection Trial (MOST) of 2,010 patients with sinus node dysfunction, dual-chamber-paced patients had less atrial fibrillation (AF) and heart failure and had slightly improved health-related quality of life (QOL) compared with rate modulated right ventricular-paced patients. Our objective was to assess the impact of AF on ...
Deguchi Yoshiaki - - 2009
BACKGROUND: This study aimed to compare the circadian distribution of the onset, maintenance and termination of paroxysmal atrial fibrillation (PAF) between structural and non-structural heart diseases (SHD and NSHD, respectively) in the untreated state. SUBJECTS AND METHODS: We included 217 patients with 338 PAF (79 SHD patients with 131 episodes; ...
Hamman Baron L - - 2009
Twenty-eight patients from a single surgeon and center underwent atrial fibrillation surgery using a diode-pumped laser. A left-sided modified (pulmonary vein encircling with connecting lesions) or a complete modified Cox-Maze III operation was employed. Of the 28 patients, 23 were available for retrospective evaluation and Holter monitoring, and 21 patients ...
Takatsuki Seiji - - 2009
AIMS: Creation of complete linear lesions in the lateral mitral isthmus (LMI) by catheter ablation for treating atrial fibrillation remains technically challenging. We aimed to clarify whether a high take-off left inferior pulmonary vein (LIPV) can hamper the creation of a complete block at the LMI. METHODS AND RESULTS: We ...
Ad Niv - - 2009
BACKGROUND: The detection of atrial arrhythmia recurrence is more accurate when using long-term (5 days to 3 weeks) continuous monitoring devices. In this study, we focus on the comparison of the recurrence of atrial arrhythmias in patients after the Cox-Maze III procedure obtained by three modalities: electrocardiography (ECG), 24-hour Holter ...
Dogan A - - 2009
BACKGROUND: Renin-angiotensin-aldosterone system (RAS) may be activated during atrial fibrillation (AF). It is unclear whether RAS inhibition may facilitate cardioversion from AF and may prevent acute recurrence of AF (ARAF). We thus investigated the effect of pretreatment with RAS blockers on cardioversion success and ARAF in patients with AF scheduled ...
Wang X X - - 2009
This study characterized CXC chemokine receptor 4 (CXCR4) expression in patients with mitral valve disease and chronic atrial fibrillation (AF). Forty-eight patients with chronic AF formed two groups based on whether they were treated with or without renin-angiotensin system (RAS) blockers (AF + RAS group; n = 25, or AF ...
Hindricks Gerhard - - 2009
AIMS: Radiofrequency catheter ablation of typical atrial flutter is one of the most frequent indications for catheter ablation in electrophysiology laboratories today. Clinical utility of electroanatomic mapping systems on treatment results and resource utilization compared with conventional ablation has not been systematically investigated in a prospective multicenter study. METHODS AND ...
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