Search Results
Results 451 - 500 of 1858
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Coleman Craig I - - 2009
AIMS: A previous study found that the adjunctive use of intravenous magnesium sulfate with ibutilide could increase the odds of a patient chemically cardioverting from atrial fibrillation (AF) or flutter (AFL) to normal sinus rhythm (NSR) by 78%. Whether or not intravenous magnesium has the same effect on dofetilide's ability ...
Rostagno Carlo - - 2009
Atrial fibrillation is a frequent complication after CABG. It occurs in 20-50% of patients, most often between the 2nd and 3rd postoperative day. About 40 % of patients experience more than 1 episode. Postoperative AF (POAF) is associated with an increase in adverse events and hospital stay and, therefore, costs ...
Helms Adam S - - 2009
The effect of left atrial (LA) structural remodeling and dilatation on the outcome of ablation of atrial fibrillation (AF) remains unknown. We correlated potential prognostic markers of AF ablation, including LA volume from computed tomography, with AF recurrence after ablation. We studied 73 consecutive patients (52 with paroxysmal AF, 21 ...
Dagres Nikolaos - - 2009
OBJECTIVES: There are inconsistent findings regarding the impact of ablation for atrial fibrillation (AF) on left atrial (LA) contractile function. We investigated the ablation effect on LA function in patients with paroxysmal AF. METHODS: Two hundred eighty-nine patients (mean age 56 +/- 9 years) underwent catheter ablation for paroxysmal AF. ...
Hirooka Masashi - - 2009
AIM: Hepatocellular carcinoma (HCC) nodules close to the liver surface exhibit high recurrence compared to those in distal parts of the liver. Moreover, when nodules remain adjacent to the gastrointestinal tract or gallbladder, severe complications such as perforation of those organs may occur due to invasive therapy. Percutaneous radiofrequency ablation ...
Arenal Angel - - 2009
AIMS: The aim of this study was to determine the mechanisms of atrial fibrillation (AF) in patients with left ventricular systolic dysfunction (LVSD). METHODS AND RESULTS: Dominant frequency (DF) spatiotemporal stability was studied in 15 patients with persistent AF (PEAF) and LVSD (Group I), 15 with PEAF without LVSD (Group ...
Subwongcharoen Somboon - - 2009
AIM: This study aims to investigate the application of the microwave generator to treat the patients with varicose veins. MATERIALS AND METHODS: Phase 1: Explanted saphenous veins in subcutaneous layer of the pork meat were ablated at 0, 40, 50, 60, and 70 W. Phase 2: The forelimb veins and ...
Henry Linda L - - 2009
Atrial fibrillation (AF) is the most common of all clinically sustained heart arrhythmias with associated morbidities (shortness of breath, fatigue, and stroke). The maze cardiac surgical procedure is a new treatment option available for patients who have medical refractory AF. The purpose of this study was to determine whether a ...
Bakhsh Muhammad M Department of Anaesthesia, Armed Forces Institute of Cardiology, Rawalpindi, Pakistan. - - 2009
To assess the role of 3 days of magnesium infusion after coronary artery bypass graft (CABG) surgery in preventing postoperative atrial fibrillation (AF). Armed Forces Institute of Cardiology (AFIC) & National Institute of Heart Diseases (NIHD), Rawalpindi, from July 2006 to June 2007. Prospective, randomized, non-blinded. All patients undergoing isolated, ...
Rybak Leon D - - 2009
PURPOSE: To demonstrate that radiofrequency (RF) ablation can be used safely and effectively to treat selected cases of chondroblastoma. MATERIALS AND METHODS: Approval was obtained from institutional review boards, research was in compliance with HIPAA protocol. The need to obtain informed consent was waived for retrospective review of patient records. ...
Friberg L L Karolinska Institute at South Hospital, Stockholm, Sweden. - - 2009
Clinical trials have indicated that an active rhythm control strategy aiming at restoration of sinus rhythm in patients with atrial fibrillation (AF) is no better than a rate-control strategy in terms of mortality and morbidity. To what extent restoration and maintenance of sinus rhythm per se affect long-term prognosis in ...
Chilukuri Karuna - - 2009
AIMS: Obstructive sleep apnoea (OSA) is a risk factor for atrial fibrillation (AF) recurrence after catheter ablation. The purpose of this study is to determine whether OSA assessed by the simple tool, the Berlin Questionnaire (BQ), is useful in predicting the efficacy of catheter ablation of AF. METHODS AND RESULTS: ...
Jiang Hong - - 2009
BACKGROUND: The safety and efficacy of the transradial approach for radiofrequency catheter ablation (RFCA) of left-sided atrioventricular accessory pathways (APs) was evaluated in the present study. METHODS AND RESULTS: Included were 40 consecutive patients with type A Wolff-Parkinson-White (WPW) syndrome who underwent RFCA via the radial artery route, and 30 ...
Shelton R J - - 2009
BACKGROUND: Atrial fibrillation (AF) and heart failure (HF) often coexist. The aim was to investigate whether restoring sinus rhythm (SR) could improve cardiac function, symptoms, exercise capacity and quality of life (QoL) in patients with chronic heart failure. METHODS: Patients with HF and persistent AF receiving guideline-recommended treatments, including anticoagulants, ...
Koyama Takashi - - 2009
Atrial fibrillation (AF) recurrences after catheter ablation are common within the first month after AF ablation, and inflammatory processes may be related to AF genesis. This study aimed to clarify the relation between inflammatory processes and recurrence of AF after ablation and to characterize AF recurring within 3 days after ...
O'Neill Mark D - - 2009
AIMS: Catheter ablation of long-lasting persistent atrial fibrillation (AF) has been performed with varying results using a combination of different techniques. Whether arrhythmia termination during ablation is associated with an improved clinical outcome is controversial. METHODS AND RESULTS: In this prospective study, 153 consecutive patients (56 +/- 10 years) underwent ...
Meissner Axel - - 2009
OBJECTIVE: As opposed to fundamental investigations into the nature of atrial fibrillation (AF) current clinical studies of AF ablation techniques sometimes only contain sparse information about the underlying electrophysiological properties. The purpose of this prospective, pilot study was to evaluate acute therapeutic success and clinical outcome after 6 month of ...
Pontoppidan J - - 2009
OBJECTIVES: This randomised trial evaluated if patients with atrial fibrillation (AF) and no history of atrial flutter (AFL) had any benefit of prophylactic cavotricuspid isthmus block (CTIB) in addition to circumferential pulmonary vein ablation (CPVA). METHODS: 149 patients with AF (54% paroxysmal) were randomised to CPVA and CTIB (group CTIB+, ...
Yilmaz Asli Sahin - - 2009
OBJECTIVES: The objective of this study is to determine if acoustic rhinometry (AR) can predict the outcome of radiofrequency ablation (RFA) of the inferior turbinates. PATIENTS AND METHODS: Preoperative AR measurements of 19 subjects undergoing inferior turbinate RFA were analyzed before and after decongestant. The average total percentage change in ...
Naji Franjo - - 2009
Recent data have shown that statins can help prevent atrial fibrillation (AF). We hypothesized that statins vary in their ability to prevent AF after successful electrical cardioversion (EC).Sixty-five patients (29 receiving atorvastatin and 36 receiving simvastatin) who had undergone successful EC for persistent AF were included in the study. They ...
Okcun B - - 2009
Recent trials have favoured ventricular rate control in atrial fibrillation (AF) management, however the present study investigated whether the restoration and maintenance of sinus rhythm with long-term anticoagulation therapy was superior in terms of embolic events and death in 534 patients with an AF duration > 48 h. Patients were ...
Peters Dana C - - 2009
We sought to evaluate radiofrequency (RF) ablation lesions in atrial fibrillation (AF) patients using cardiac magnetic resonance (CMR), and to correlate the ablation patterns with treatment success. RF ablation procedures for treatment of AF result in localized scar that is detected by late gadolinium enhancement (LGE) CMR. We hypothesized that ...
von Oppell Ulrich O - - 2009
OBJECTIVE: Prospective randomised study comparing patients with atrial fibrillation (AF) of more than 6 months duration after mitral valve surgery plus biatrial modified radiofrequency Maze procedure using Medtronic Cardioblate System (Cardioblate group, n=24) vs mitral valve surgery plus intensive rhythm control strategy (control group, n=25). METHODS: Patients were blinded to ...
Yoshida Naoki - - 2009
BACKGROUND: The relationship between vagal modification and paroxysmal atrial fibrillation (PAF) recurrence after segmental pulmonary vein (PV) isolation (S-PVI) was investigated. METHODS AND RESULTS: S-PVI was performed in 77 PAF patients using a multielectrode basket or circular catheter to achieve electrical disconnection of all 4 PVs independent of eliminating vagal ...
Di Biase Luigi - - 2009
BACKGROUND: Whether different ablation strategies affect paroxysmal atrial fibrillation (AF) long-term freedom from AF/atrial tachyarrhythmia is unclear. We sought to compare the effect of 3 different ablation approaches on the long-term success in patients with paroxysmal AF. METHODS AND RESULTS: One hundred three consecutive patients with paroxysmal AF scheduled for ...
Lin Yenn-Jiang - - 2009
BACKGROUND: The regional distribution of the low-voltage zones (LVZs) may relate to the maintenance of atrial arrhythmias in the right atrium (RA). OBJECTIVES: The purpose of this study was to investigate the RA substrate characteristics in different types of atrial arrhythmias originating from RA and left atrium (LA). METHODS: Forty-five ...
Schmidt Boris - - 2009
BACKGROUND: Radiofrequency current ablation of atrial fibrillation (AF) requires high technical skills to achieve optimal catheter stability and is associated with an individually high x-ray exposure to both the patient and the operator. To facilitate catheter navigation and to reduce the operator's x-ray burden, remote navigation (RN) systems have been ...
Di Biase Luigi - - 2009
BACKGROUND: Left atrioesophageal fistula is a rare but devastating complication that may occur after catheter ablation of atrial fibrillation. We used capsule endoscopy to assess esophageal injury after catheter ablation for atrial fibrillation in a population randomized to undergo general anesthesia or conscious sedation. METHODS AND RESULTS: Fifty patients undergoing ...
Li Yue - - 2009
AIMS: Oxidative stress has recently been implicated in atrial fibrillation (AF); however, the mechanisms remain unclear. Herein, we hypothesize that probucol can attenuate atrial structure remodeling. METHODS: Twenty dogs were randomly divided into sham-operated, control, and probucol-treated groups. We identified apoptosis and histopathological changes in the atria. Oxidative stress was ...
Chu Kevin - - 2009
OBJECTIVES: The objective was to investigate the efficacy of magnesium sulfate (MgSO4) in decreasing the ventricular rate in emergency department (ED) patients presenting with new-onset, rapid atrial fibrillation (AF). METHODS: A double-blinded, placebo-controlled randomized clinical trial was conducted in an adult university hospital. Patients aged > or =18 years with ...
Huang Tsung-Jen - - 2010
BACKGROUND: Minimally invasive total knee or hip replacement has been increasingly adopted in recent years. However, literature indicates that minimally invasive joint arthroplasty may not always reduce pain or tissue trauma. We hypothesized that the tissue damage would be reduced in minimal access surgery (MAS) than the conventional open surgery ...
Almroth Henrik - - 2009
AIMS: To evaluate the effect of atorvastatin in achieving stable sinus rhythm (SR) 30 days after electrical cardioversion (CV) in patients with persistent atrial fibrillation (AF). METHODS AND RESULTS: The study included 234 patients. The patients were randomized to treatment with atorvastatin 80 mg daily (n = 118) or placebo ...
Martinek M M Department of Cardiology, Elisabethinen University Teaching Hospital Linz, Austria. - - 2009
Atrioesophageal fistula is an uncommon but often lethal complication of atrial fibrillation (AF) ablation. The purpose of our study was to prospectively investigate the incidence of esophageal ulcerations (ESUL) as well as the impact of energy settings, radiofrequency lesion sets, and direct visualization of the esophagus on esophageal wall injury. ...
Louagie Yves - - 2009
BACKGROUND: The benefit of the Cox Maze procedure combined with heart surgery was evaluated at long-term follow-up. METHODS: The outcome for 37 patients who underwent a Cox Maze III procedure combined with heart surgery (Maze group) was compared with that of 66 patients who had heart surgery alone (control group). ...
Buz Semih - - 2009
BACKGROUND: Several methods for surgical repair of partial anomalous pulmonary venous connection have been described. Sinus node dysfunction is known as a cause of morbidity after surgical repair. In this retrospective study, we attempted to determine the incidence of arrhythmias after use of two different techniques for repair of partial ...
Verhaert David - - 2009
Postoperative atrial fibrillation (AF) is a common complication after cardiothoracic surgery, not only associated with an increased length of hospital stay but also predisposing patients to thromboembolic complications and stroke. Current guidelines advocate a therapeutic approach for postoperative AF that is fairly similar to the recommendations given for nonsurgical patients ...
Mauger Alexis R - - 2009
PURPOSE: To determine the importance of distance knowledge, distance feedback, and prior experience on the setting of a pacing strategy. METHODS: Eighteen well-trained male cyclists were randomly assigned to a control (CON) group or an experimental (EXP) group and performed four consecutive 4-km time trials (TT), separated by a 17-min ...
Jankharia Bhavin - - 2009
To describe our technique for performing radiofrequency ablation (RFA) in osteoid osteoma and to evaluate the results of treatment. We evaluated 40 patients in whom RFA was performed for osteoid osteomas between October 2005 and February 2008. The lesions were located in the femur (n = 22), tibia (n = ...
Sharma Virender K - - 2009
OBJECTIVES: Dysplasia in a Barrett's esophagus (BE) is associated with an increased risk for developing esophageal adenocarcinoma. Ablation using the HALO system has shown promise for the treatment of BE with dysplasia. The objective of this study was to assess the safety and efficacy of a stepwise regimen of circumferential ...
Bastani Hamid - - 2009
AIMS: The purpose of this study was to evaluate the safety and efficacy of cryoablation as an alternative to radio frequency (RF) ablation in high-risk-located atrial tachycardia (AT). METHODS AND RESULTS: Between 2004 and 2007, 164 patients underwent catheter ablation due to AT at our institution. Twenty-six of these patients ...
Kusumoto Fred - - 2009
INTRODUCTION: Catheter ablation (CA) of atrial fibrillation (AF) has become a treatment option for younger patients with drug refractory AF. It is not known whether pulmonary veins (PV) have an important mechanistic role in elderly patients with AF or whether CA is an effective treatment for the elderly. METHODS: We ...
Choi Jong-Il - - 2009
BACKGROUND: The vein of Marshall (VOM), which exists along the left lateral isthmus (LLI), constitutes a muscular connection between the coronary sinus (CS) and the left atrium (LA). We hypothesized that anatomical variation of the VOM affects the bidirectional block of LLI and the clinical outcome in patients with nonparoxysmal ...
Takahashi Yoshihide - - 2009
BACKGROUND: Mapping of recurrent atrial tachycardia (AT) after extensive ablation for long-lasting persistent atrial fibrillation (AF) is complex. We sought to describe the electrophysiological characteristics of localized reentry occurring after ablation of long-lasting persistent AF. METHODS: Out of 70 patients undergoing catheter ablation of long-lasting persistent AF, 9 patients (13%, ...
Kato Kimihiko - - 2009
AIMS: The aim of this study was to evaluate the role of matrix metalloproteinases (MMPs) for the prediction of long-term maintenance of sinus rhythm (SR) after cardioversion in atrial fibrillation (AF). METHODS AND RESULTS: The study comprised 102 patients with AF. Pharmacological cardioversion was attempted for a 4-week period with ...
Hoffmann Ralf-Thorsten - - 2010
PURPOSE: This study aimed to determine the success and complication rates of radiofrequency ablation (RFA) in treatment of osteoid osteoma (OO) and duration of pain relief. Furthermore value of bone biopsy prior to the RFA was evaluated. MATERIALS AND METHODS: Within 61 months 39 patients (23 male, 16 female, 7-53 ...
T De Potter
Background: To identify and characterise pre-procedural and procedural parameters which predict maintenance of sinus rhythm after a first circumferential pulmonary vein isolation (CPVI) for recurrent atrial fibrillation (AF). Methods: 100 patients (54�10 yrs) undergoing CARTO-guided CPVI for symptomatic drug refractory, paroxysmal or shortstanding persistent AF were studied. The endpoint was ...
Kosior Dariusz A - - 2009
BACKGROUND: A prospective, randomized study was conducted to evaluate the efficacy and tolerability of oral propafenone and quinidine for the conversion of paroxysmal atrial fibrillation (AF). METHODS: Eighty one consecutive patients (female/male 46/35; mean age 64.0 +/- 11.6), admitted to hospital with AF lasting no longer than 48 hours, were ...
Kuppahally Suman S - - 2009
Initial success of electrical cardioversion (ECV) of atrial fibrillation (AF) has been reported in several studies as 50%-90%, of which only 50% patients remain in sinus rhythm (SR) at the end of one year. We conducted this study to see if outcomes of other trials are applicable in managed care ...
Turitto Gioia - - 2009
AIMS: To compare patients with atrial flutter (AFl) and 1:1 atrioventricular conduction (AVC) with patients with AFl and higher AVC. METHODS: The characteristics of 19 patients with AFl and 1:1 AVC (group A) were compared with those of 116 consecutive patients with AFl and 2:1 AVC or higher degree AV ...
Sileikiene Rima - - 2009
Radiofrequency ablation of the slow pathway is an effective method of treatment in children with atrioventricular nodal reentrant tachycardia. The aim of our study was to evaluate anterograde conduction properties in children before and after radiofrequency ablation of the slow pathway and to determine the efficacy and safety of this ...
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