Search Results
Results 301 - 350 of 1170
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Stevenson Irene H - - 2005
BACKGROUND: Few descriptions of right atrial macroreentrant atrial tachycardia involving regions of spontaneous "scar" have been reported. OBJECTIVES: We describe the electrocardiographic, electrophysiologic, and electroanatomic characteristics of an unusual RA macroreentrant atrial tachycardia in eight patients with spontaneous RA scarring. METHODS: Eight of 286 patients with macroreentrant atrial tachycardia treated ...
del Arco Carmen - - 2005
STUDY OBJECTIVE: Limited information relative to the management of atrial fibrillation in the emergency department (ED) daily practice is available. This study evaluates current management of atrial fibrillation in this setting to identify areas for practice improvement. METHODS: This was a prospective multicenter observational study carried out in 12 EDs. ...
Mattioli Anna Vittoria - - 2005
AIMS: The present study was designed to establish the relationship between personality factors, socio-economic factors and acute life stress with development, spontaneous cardioversion and recurrences of acute lone atrial fibrillation. METHODS: The study group consisted of 116 patients with lone atrial fibrillation cardioverted within 48h of the onset of arrhythmia; ...
Coleman Hedley - - 2005
INTRODUCTION: Information on histopathological changes within sinus mucosa is lacking, both in the general population, and in subjects with specific facial morphology and chronic respiratory obstruction. AIMS AND OBJECTIVES: To provide baseline data of the frequency and nature of pathological changes in the maxillary sinus in a specified group of ...
Budeus Marco - - 2005
Detailed analysis of the QRS-complex and autonomic dysfunction can identify patients at risk to suffer from ventricular arrhythmias. To determine whether patients at risk for paroxysmal atrial fibrillation (PAF) could be identified while in sinus rhythm, a P wave triggered signal averaged ECG and an analysis of the autonomic function ...
Berger Felix - - 2005
Atrial arrhythmias complicate the clinical course of adult patients with an atrial septal defect. Atrial flutter is more prevalent in younger patients, and frequently regresses after surgical defect closure. Atrial fibrillation however, which results from a chronic underlying disease, rarely reverts to sinus rhythm after surgical repair. While younger patients ...
Celebi Murat - - 2005
Management of atrial fibrillation is largely driven by the clinical status of the affected patient. Advances in understanding the mechanism of the arrhythmia have led to more aggressive catheter-based approaches to the management of atrial fibrillation. Because atrial fibrillation is a complex disease with multiple possible mechanisms, one approach for ...
Halperin Jonathan L - - 2005
Atrial fibrillation is a risk factor for stroke, particularly among elderly patients. Multiple trials have established that antithrombotic therapy decreases stroke risk. Aspirin is associated with a relative risk reduction of about 21% and adjusted-dose warfarin (international normalized ratio 2.0-3.0) is associated with a relative risk reduction of about 68%. ...
Schuchert Andreas - - 2005
INTRODUCTION: Atrial tachyarrhythmias are a common co-morbidity in patients with an ICD indication. Recently introduced ICD's are equipped to independently detect and treat atrial and ventricular tachyarrhythmias. The purpose of this prospective study was to evaluate the incidence and termination of spontaneous atrial and ventricular tachyarrythmias in patients with a ...
Komai Hiroyoshi - - 2005
BACKGROUND: In spite of the progress in operative techniques and pre- and postoperative management for congenital heart disease, lung injury induced by the extracorporeal circulation is still a serious insult in pediatric open-heart operations. To prevent this injury, we used a leukocyte-endothelial cell adhesion molecule blocking agent, dextran sulfate, in ...
Muench Andreas - - 2005
We describe three patients with initial failure of transcatheter patent foramen ovale closure. Two patients had residual defects successfully closed during the initial session, and one patient had a persistent shunt, which was corrected at a later time. Anatomical and technical considerations and the role of intracardiac ultrasound are discussed.
Kirchhof Paulus - - 2005
AIMS: External electrical cardioversion is the method of choice to terminate persistent atrial fibrillation. Whether the type of shock electrode affects cardioversion success is not known. We tested whether hand-held steel electrodes improve cardioversion outcome with monophasic or biphasic shocks when compared with adhesive patch electrodes. METHODS AND RESULTS: Two ...
Sueda Taijiro - - 2005
BACKGROUND: This study aims to clarify midterm results of chronic atrial fibrillation elimination after pulmonary vein isolation and provides an evaluation of factors influencing results. METHODS: Forty-nine patients were enrolled in this study. We performed a simple pulmonary vein isolation with the aid of cryoablation or radiofrequency ablation directed towards ...
Lin Yenn-Jiang - - 2005
Right atrial substrate of supraventricular tachyarrhythmias. BACKGROUND: Voltage mapping has been used to detect diseased myocardium. However, accurate determination of the local atrial voltage at the same site, and simultaneous recordings from multiple mapping sites were limited. The purpose of this study was to investigate the right atrial (RA) substrate ...
Kotre C J - - 2005
In cardiology and interventional radiology, areas that contribute large components to medical radiation exposure, a major source of variation in patient dose is the variation in complexity between cases for nominally identical procedures. In patient dose surveys, this variation tends to mask that due to patient size. The effect of ...
N Jayaprasad - - 2005
Atrial fibrillation occurs in 10 - 15% of patients with hyperthyroidism. Low serum thyrotropin concentration is an independent risk factor for atrial fibrillation. Thyroid hormone contributes to arrythmogenic activity by altering the electrophysiological characteristics of atrial myocytes by shortening the action potential duration, enhancing automaticity and triggered activity in the ...
van Deelen Bob A J - - 2005
BACKGROUND AND OBJECTIVE: Atrial fibrillation is an indication for oral anticoagulation treatment. Maintaining the International Normalized Ratio (INR) within the therapeutic range minimises thromboembolic and bleeding complications. We have investigated whether cognitive capacity affects control of anticoagulation in elderly patients with atrial fibrillation. PATIENTS AND METHODS: A retrospective study was ...
Xi Qin - - 2004
OBJECTIVES: The purpose of this study was to assess whether surface ECG fibrillatory (f)-wave characteristics reflect clinical variables, especially pattern of occurrence. BACKGROUND: In clinically stable patients, f waves have fairly constant quantitative characteristics. Both electrophysiologic and structural remodeling might modify f waves. METHODS: We analyzed f waves from 238 ...
Mahé Isabelle - - 2004
Oral anticoagulant (OA) therapy is widely used in elderly patients because of the increase of indications with age (venous thromboembolism and atrial fibrillation). A particularity of France is to administer three different OAs (warfarin and more often fluindione or acenocoumarol). In an attempt to assess the particularities of managing all ...
Maury Philippe - - 2004
INTRODUCTION: Class I antiarrhythmic drugs increase duration of the excitable gap (EG) during typical atrial flutter whereas intravenous class III drugs decrease the EG. The effect of chronic oral amiodarone therapy on the EG is unknown. METHODS AND RESULTS: EG was prospectively determined by introducing a premature stimulus and analyzing ...
Zimetbaum Peter - - 2004
Recent studies have indicated that outcomes in patients with atrial fibrillation who are managed with rate control and anticoagulation are similar to those in patients who have maintenance of sinus rhythm. These studies did not include important groups of patients with atrial fibrillation in whom antiarrhythmic therapy may be appropriate. ...
Sakurai Kenji - - 2004
BACKGROUND: It remains controversial whether prophylactic anticoagulation for embolism is required in patients with atrial flutter (AFL) prior to and following cardioversion as in patients with atrial fibrillation. To evaluate the potential prothrombotic state following cardioversion of AFL, concentrations of hemostatic markers were determined before and after conversion to sinus ...
Drouin P - - 2004
AIM: To evaluate the efficacy and safety of gliclazide modified release (MR), alone or combined with other oral antidiabetic drug(s) over 2 years in type 2 diabetic patients. METHODS: Two consecutive periods: (i) a 10-month, double-blind comparative study, where 800 type 2 diabetic patients were randomized either to gliclazide MR ...
Prokselj Katja - - 2004
The aim of the study was to analyze echocardiographic characteristics of isolated secundum-type atrial septal defects (ASD II) in adult patients and their implications for percutanous closure using Amplatzer septal occluders. The study population consisted of 64 consecutive adult patients with isolated ASD II (mean age 43.6 +/- 15.9 years). ...
Hallioglu Olgu - - 2004
BACKGROUND: The aim of the present study was to determine the potential role of P wave duration and P wave dispersion for risk assessment of atrial tachyarrhythmias in patients with corrected tetralogy of Fallot (ToF). METHODS: The maximum P wave duration, minimum P wave duration, and the P wave dispersion ...
Hsieh Ming-Hsiung - - 2004
BACKGROUND: Double atrial potentials recorded in the coronary sinus are not an unusual phenomenon in patients with supraventricular tachyarrhythmias. They have been demonstrated to potentiate the occurrence of atrial tachyarrhythmias. METHODS: Two hundred and forty-eight patients were included for investigating the presence of double atrial potentials on the coronary sinus ...
Hui Wei - - 2004
We aimed to assess the right atrial performance in patients after surgical correction of tetralogy of Fallot, and to clarify the relationship between the pump function of the right atrium and right ventricular systolic function. We included in the study 50 asymptomatic patients following corrective surgery of tetralogy of Fallot, ...
Al-Khatib Sana M - - 2004
In 1,009 patients with atrial fibrillation and congestive heart failure, the 2-year mortality rate was 31% in patients treated with rate control (n = 505) versus 29% in patients treated with rhythm control (n = 504). After adjusting for differences in baseline characteristics and medications, no significant difference in mortality ...
Brembilla-Perrot Béatrice - - 2004
BACKGROUND: Noninvasive studies are often negative in patients with syncope, normal surface ECG and without heart disease. The purpose of the study was to determine the diagnostic impact of an esophageal electrophysiological study performed during a consultation. METHODS: A total of 154 patients aged from 16 to 87 years were ...
Schreieck Juergen - - 2004
BACKGROUND: A polymorphism consisting of a C825T substitution in the G-protein beta(3) subunit gene (GNB3) has been associated with enhanced human atrial inward rectifier potassium currents regarding the TT genotype. Therefore, we investigated a possible impact of the GNB3 C825T polymorphism on atrial fibrillation in an association study. METHODS: Two ...
Jayaraman Chandra - - 2004
BACKGROUND: Ischaemic stroke is reduced by anticoagulant therapy in high-risk patients with atrial fibrillation. Evidence however, suggests patients are under treated. AIM: To assess anticoagulant use in patients with ischaemic stroke and atrial fibrillation in Waikato Hospital. METHODS: A retrospective review of all patients admitted with stroke over a one-year ...
Nakao Kojiro - - 2004
Although electrophysiological abnormalities of atrial muscle have been evaluated in patients with paroxysmal atrial fibrillation (PAF), no prior study has determined the contribution of the patient's history of PAF to electrophysiological abnormalities. The study population consisted of 108 patients (71 men; mean age, 57 +/- 14 years) with symptomatic and ...
Hagens Vincent E - - 2004
Aims To evaluate costs between a rate and rhythm control strategy in persistent atrial fibrillation. Methods and results In a prospective substudy of RACE (Rate control versus electrical cardioversion for persistent atrial fibrillation) in 428 of the total 522 patients (206 rate control and 222 rhythm control), a cost-minimisation and ...
Miura Fumiharu - - 2004
It has been reported that abnormalities of atrial conduction are present in patients with atrial flutter (AFL). We analyzed the P wave signal-averaged ECG (PSE) in patients after cardioversion of chronic AFL by radiofrequency catheter ablation (RFCA) to determine whether abnormalities of atrial conduction exist in patients with AFL and ...
Bhankharia Dimple A - - 2004
BACKGROUND: Desonide, a non-halogenated, low-potency topical steroid, is indicated in the treatment of steroid-responsive dermatoses. AIMS: A post-marketing surveillance study was conducted to evaluate the efficacy and safety of Desowen (Desonide 0.05%) cream and lotion in Indian patients for the treatment of steroid-responsive dermatoses of mild to moderate severity. METHODS: ...
Kammeraad Janneke A E - - 2004
OBJECTIVES: The goal of this research was to identify predictors for sudden death (SD) in patients with transposition of the great arteries (TGA) who have undergone atrial inflow repair. BACKGROUND: Sudden death is the most common cause of late death after atrial inflow repair of TGA. Little is known about ...
Thomas S P - - 2004
BACKGROUND: Transvenous catheter ablation for the treatment of atrial fibrillation is an evolving technique. AIM: The purpose of this study was to identify subgroups of patients most likely to benefit from pulmonary vein electrical isolation. METHODS: Patients with symptomatic atrial fibrillation resistant to pharmacological therapy were studied. Mapping-guided segmental application ...
Ooyanagi Reiki - - 2004
BACKGROUND: Pulse wave velocity (PWV) and ankle brachial index (ABI) are a useful method to estimate atherosclerosis in adults, while a history of Kawasaki disease (KD) may be a risk factor for later atherosclerosis of systemic arteries. PWV and ABI in patients with a history of KD have not been ...
Acosta S - - 2004
BACKGROUND: There is no accurate non-invasive method available for the diagnosis of acute thromboembolic occlusion of the superior mesenteric artery (SMA). The aim of this study was to assess the diagnostic properties of the fibrinolytic marker D-dimer. METHODS: From September 2000 to April 2003 consecutive patients aged over 50 years ...
Knight Bradley P - - 2004
OBJECTIVES: The purpose of this study was to determine the frequency and causes of intermittent and permanent loss of cardiac resynchronization therapy (CRT) in patients who have undergone the successful implantation of a transvenous defibrillator that delivers CRT (CRT-D). BACKGROUND: The causes of loss of CRT have not been described. ...
Chen Mien-Cheng - - 2004
BACKGROUND: Previous studies have demonstrated that platelet activation occurs in peripheral blood of patients with rheumatic mitral stenosis (MS). However, in patients with MS, the plasma level of soluble P-selectin (a marker of platelet activation) remains unsettled. METHODS AND RESULTS: A total of 20 patients with symptomatic MS undergoing percutaneous ...
Hosgor Munevver - - 2004
BACKGROUND/PURPOSE: Delayed presentation of congenital diaphragmatic hernia (CDH) has been considered rare, and clinical manifestations differ from the more common newborn entity. Associated malformations in late-appearing CDH have been reported in a few patients. The authors reviewed their clinical experience to catalogue the frequency and clinical importance of associated malformations ...
Tani Tomoko - - 2004
Paroxysmal atrial fibrillation (PAF) is a common complication of patients with hypertrophic cardiomyopathy, often leading to acute or progressive heart failure and cerebral infarction. We assessed the echocardiographic data of 141 consecutive patients with hypertrophic cardiomyopathy, with and without PAF. In all, 31 patients (22%) had a history of PAF ...
Fujiki Akira - - 2004
INTRODUCTION: The aim of this study was to determine using entrainment mapping whether the reentrant circuit of common type atrial flutter (AFL) is single loop or dual loop. METHODS AND RESULTS: In 12 consecutive patients with counterclockwise (CCW) AFL, entrainment mapping was performed with evaluation of atrial electrograms from the ...
Marrouche Nassir F - - 2004
BACKGROUND: We describe the clinical and electrophysiological characteristics of a novel macroreentrant form of left atrial flutter circuit. METHODS AND RESULTS: A total of 11 patients were included in the study. The mean tachycardia cycle length was 278+/-41 ms. Nine of the 11 patients were treated with antiarrhythmic drugs at ...
Sato Hiroshi - - 2004
BACKGROUND: Abnormal findings, including silent cerebral infarction, are frequently observed by magnetic resonance imaging (MRI) in patients with nonvalvular atrial fibrillation (NVAF); however, the prevalence and prevention strategy for these lesions have not been extensively studied. In the present study the preventive effects of aspirin on silent ischemic lesions was ...
Miyamoto Koji - - 2004
Although pacing therapy for sick sinus syndrome (SSS) is established, the risk of developing chronic atrial fibrillation (CAF) makes pacing therapy infeasible in some patients. We evaluated whether electrophysiological characteristics of atrial muscle can serve as predictors of the transition to CAF after pacemaker implantation in patients with SSS. Eighty-nine ...
Ağaoğlu N - - 2004
It is well established that a condition of hypercoagulation due to deficiencies of antithrombin III, protein C and protein S may result in thrombo-embolism. To evaluate the possibility of hypercoagulation in acute mesenteric ischemia (AMI); clinical features, ECG changes, drug history, the length of intestine remaining after the resection and ...
Sturmberg Joachim P - - 2004
BACKGROUND: Poly-morbidity is the hallmark of the frail elderly. The traditional model of treating each disease on its own merit does not work for this patient group. OBJECTIVE: This article outlines the assessment, investigations and management of falls and atrial fibrillation in the elderly. DISCUSSION: The challenge for the general ...
Erdogan Dogan - - 2004
A 75-year-old man was admitted to our clinic with the complaints of palpitation, fever, severe dyspnea, dizziness and bloody sputum associated with coughing. Chest radiographs revealed that the lungs were bilaterally infiltrated. A high resolution computed tomographic study of the thorax disclosed diffuse alveolar hemorrhage, of which presence was proved ...
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