Search Results
Results 801 - 850 of 1024
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Figueredo E - - 1999
The post-operative anti-emetic efficacy of 4 and 8 mg of ondansetron in adult patients with and without a previous history of motion sickness (PHMS) was assessed by meta-analysis. MEDLINE and EMBASE databases were searched for randomized placebo-controlled trials evaluating the anti-emetic effectiveness of ondansetron in a 24-h period. In the ...
Lévy S - - 1999
BACKGROUND: The clinical presentation and causes of atrial fibrillation (AF) in the 1990s may differ from AF seen 2 to 3 decades ago. It was the objective of this prospective study to characterize various clinical presentations and underlying conditions of patients with AF observed in general practice in France. METHODS ...
Bhattacharyya A - - 1999
Atrial fibrillation (AF) is an important risk factor for ischaemic stroke, and anticoagulation is now indicated in many patients, particularly those with congestive cardiac failure, hypertension, a history of transient ischaemic attacks or embolic stroke. In a retrospective study (and audit), we examined 280 cases of AF (acute, paroxysmal non-sustained ...
Takahashi A - - 1999
OBJECTIVES: The purpose of this study was to prospectively evaluate preexisting partial isthmus block in the context of an electrophysiologically directed linear ablation strategy for typical atrial flutter (AF). BACKGROUND: Double potentials (DPs) separated by an isoelectric interval have been recognized as markers of local block. However, the presence and ...
D'Alessandro G - - 1999
With the aim of quantifying the use of oral anticoagulant (OA) therapy in clinical practice, we surveyed 150 consecutive patients admitted with a diagnosis of atrial fibrillation (AF). Each patient was administered a questionnaire relating to the classic vascular risk factors and to the antithrombotic treatment received at home. The ...
Aller R - - 1999
The aim of this study was to study the prevalence of hepatopulmonary syndrome (HPS) in cirrhotic patients, comparing the results obtained using contrast transthoracic echocardiography (CTTE) and contrast transesophageal echocardiography (CTEE) in the demonstration and grading of pulmonary vasodilatation (PV). We also analyzed the correlation between gas-exchange abnormalities and PV ...
Tuinenburg A E - - 1999
INTRODUCTION: Circulating cardiac natriuretic peptides play an important role in maintaining volume homeostasis, especially during conditions affecting hemodynamics. During atrial fibrillation (AF), levels of plasma atrial natriuretic peptide (ANP) becomes elevated. The aim of this study was to gather information about gene expression of the natriuretic peptide system on the ...
Hwang C - - 1999
INTRODUCTION: The origin of double potentials inside the left superior pulmonary vein and their relation to the mechanisms of idiopathic paroxysmal focal atrial fibrillation (AF) are unclear. METHODS AND RESULTS: A total of 40 patients were studied. Group I included 15 patients who underwent radiofrequency catheter ablation of accessory pathway. ...
Marshall H J - - 1999
AIMS: To assess the feasibility of placing permanent atrial pacing leads during atrial fibrillation (AF) and whether such leads function satisfactorily. METHODS AND RESULTS: Prospective study of 17 consecutive patients in whom permanent atrial leads were positioned during an episode of paroxysmal AF. Fluoroscopic position ('figure of 8' or side-to-side ...
Schumacher B - - 1999
In selected patients, atrial fibrillation (AF) converts to atrial flutter (AFI) due to treatment with class IC antiarrhythmic drugs. In this study, we prospectively investigated the effects of AFI ablation and continuation of drug therapy in patients with AF who developed AFI due to long-term administration of class IC antiarrhythmic ...
Cantley P - - 1999
All patients identified from records in two practices in West Lothian (n = 103) as having atrial fibrillation (AF) were offered a clinical examination, electrocardiogram (ECG), and echocardiography. Sixty-five patients attended the examinations. Of these, 26 (40%) were found to be in sinus rhythm. Many of those in AF were ...
Carbucicchio C - - 1999
Modulation of the AV node reduces the ventricular rate during AF, without affecting AV conduction during sinus rhythm. Acute and long-term results of AV node modulation in 75 patients with AF and severe related symptoms of heart failure are presented in this study. The procedure involved, in all cases, the ...
Kishikawa T - - 1999
We investigated the efficacy and safety of oral repetitive loading of disopyramide, for the termination of acute-onset (i.e., therapy started within 2 days after the onset of palpitations) atrial fibrillation (AF) in 96 consecutive patients, with concurrent monitoring of the serum concentration of this agent in fifteen of the patients. ...
McComb J M - - 1999
AIMS: This study examined the factors associated with the development of chronic (or permanent) atrial fibrillation (AF) in patients who had undergone atrioventricular (AV) node ablation with permanent pacing because of paroxysmal AF. METHODS: A retrospective review of case notes of all 65 consecutive patients identified as having had paroxysmal ...
Santini M - - 1998
The aims of the study were to verify the efficacy and safety of low energy internal cardioversion (LEIC) in patients with persistent atrial fibrillation (AF) and to identify the factors affecting the atrial defibrillation threshold (ADT). Forty-nine patients with persistent (lasting > or = 10 days) AF underwent LEIC. In ...
Hobday T J - - 1998
Ninety-two consecutive patients with atrial fibrillation (AF) who underwent dobutamine stress echocardiography were compared with a control group of patients in sinus rhythm matched for age, sex, and resting heart rate. Patients with AF had an increased chronotropic response to dobutamine, but there were no adverse effects and no evidence ...
Barretto A C - - 1998
We studied the incidence of AF in patients with endomyocardial fibrosis (EMF) and its influence on prognosis and associated clinical events. One hundred and sixty consecutive patients with EMF were followed for a mean period of 4 years. Their mean age was 39.7 years. There were 114 women. During follow-up ...
Myers M G - - 1998
Atrial fibrillation (AF) is a common complication of coronary artery bypass surgery (CABS). Because conventional antiarrhythmic therapy may cause proarrhythmia, a rate control approach to AF was evaluated in 59 patients post-CABS. The use of digoxin with or without verapamil for AF was associated with spontaneous conversion to normal sinus ...
Shulman O - - 1998
The motivational factors were divided into three categories: (1) independent decision, (2) observation of previous patients, and (3) external influences. The results of the percentage breakdown of the patients in our present study are compared with previous results are presented in 1983 in this journal. Once again, the independent decision ...
Lubinski A - - 1998
The present study was performed to assess the effect of induced atrial fibrillation (AF) on atrial monophasic action potentials (MAPs) and atrial refractory period (ERP) in patients with structural heart disease. An electrode MAP catheter was placed in the right atrium to continuously measure atrial potential duration (APD90) in 13 ...
Kerr C R - - 1998
The Canadian Registry of Atrial Fibrillation (CARAF) is a nondirected, follow-up study of 1,086 patients who are enrolled at 6 centers across Canada at the time of initial electrocardiographically documented diagnosis of atrial fibrillation (AF). Enrollment commenced in 1991 with an intended 10-year follow-up. Comprehensive baseline data, including clinical history, ...
Buys E M - - 1998
His-bundle ablation followed by pacemaker implantation is today a widely accepted therapeutic choice when drug refractoriness of symptomatic AF is evident. The selection of pacing mode in patients suffering from paroxysmal AF is still controversial. Preservation of AV synchrony is an attractive option in patients with paroxysmal AF who undergo ...
Zimmermann M - - 1998
Little is known about the electrophysiological properties of the atrium predisposing to paroxysmal atrial fibrillation (AF), especially in patients without structural heart disease. This study was conducted to analyze intraatrial conduction, atrial refractoriness, and arrhythmia inducibility in patients with lone paroxysmal AF. An electrophysiological study was performed in 24 patients ...
Pitschner H F - - 1998
In 9 patients with a history of paroxysmal atrial fibrillation (AF), basket catheters with 64 electrodes were used to determine electrophysiologic aspects of onset and early minutes of AF in the right atrium. Mapping was performed using 32 bipolar recordings after induction of AF by programmed atrial stimulation. In 7 ...
Rostagno C - - 1998
Echocardiography is frequently required in patients with atrial fibrillation (AF) to exclude underlying heart disease. In the present investigation the authors evaluated 56 patients with paroxysmal AF (PAF) (27 men, 29 women, mean age 54+/-11.3 years) in whom lone AF was suspected on clinical grounds. M-mode, B-mode, and Doppler examination ...
Hebestreit H - - 1998
OBJECTIVE: To assess aerobic fitness (AF) and physical activity (PA) in patients with HLA-B27 positive juvenile spondyloarthropathy (JSpA) in remission at the time of testing. METHODS: Twenty-one previous patients (12 male, 9 female), age 6-26 years (median age 17.8), and 21 healthy controls matched for age, sex, height, and weight ...
Sueda T - - 1998
A simple left atrial procedure for atrial fibrillation (AF) was performed in 16 elderly patients (age over 70 years old) with chronic AF associated with mitral and/or aortic valvular diseases. Chronic AF was eliminated upon discharge in 13 out of the 16 patients (81%). Twelve of the 13 patients (92%) ...
Panagiotopoulos K - - 1998
Thrombogenesis in the left atrial appendage (LAA) has been related to the special morphology of this cavity and to its size and degree of dysfunction. However, no study has focused on LAA function in conjunction with left atrial (LA) function in both sinus rhythm (SR) and nonrheumatic idiopathic atrial fibrillation ...
Nardone D A - - 1998
We evaluated the effect of a randomized trial of gowning on length of visit and number of physical examinations performed in an outpatient clinic. Nineteen senior internal medicine trainees saw 110 patients without gowns and 113 patients with gowns. Patients without gowns were with the trainees 25.2 +/- 11.9 (mean ...
Stockhorst U - - 1998
The infusion of cytotoxic drugs in cancer patients is often accompanied by posttreatment nausea (PN). In addition, patients complain about nausea prior to an infusion [i.e., anticipatory nausea (AN)]. AN is mainly explained by classical conditioning, with the infusion as the unconditioned stimulus (US) and with the stimuli signaling the ...
Bollmann A - - 1998
This study assesses a technique for quantifying the frequency spectrum of atrial fibrillation (AF) using the surface electrocardiogram. Electrocardiograhic recordings were obtained in 61 patients during AF. After bandpass filtering, the QRST complexes were subtracted using a template-matching algorithm. The resulting fibrillatory baseline signal was subjected to Fourier transformation and ...
Gaita F - - 1998
BACKGROUND: Knowledge of the electrophysiological substrates and the cure of atrial fibrillation (AF) is still unsatisfactory. The goal of this study was to evaluate the electrophysiological features of idiopathic AF and their relationship to the results of radiofrequency (RF) catheter ablation of AF and the safety and effectiveness of this ...
Sra J - - 1998
Spontaneous reinitiation of atrial fibrillation (AF) has not been systematically looked at in patients undergoing transvenous AF. This study involved 11 patients, the mean age 60 +/- 8 years, 3 male and 8 female, in whom transvenous atrial defibrillation successfully converted AF to sinus rhythm. Eight patients had paroxysmal AF ...
Crown W H - - 1998
The purpose of this study was to evaluate whether 1-year total healthcare expenditures differed between patients who initiated therapy on a tricyclic antidepressant (TCA) or a selective serotonin reuptake inhibitor (SSRI) after controlling for initial antidepressant selection and antidepressant use pattern. A retrospective claims database covering a privately insured population ...
Stringham P - - 1998
A series of brief office counseling interventions for the prevention and treatment of violence is reviewed in this article. Primary prevention strategies throughout the pediatric age span cover topics from gun storage to nonviolent handling of a potential street fight. Secondary prevention strategies deal with patients who have been injured ...
Muraoka Y - - 1998
The pathogenesis of paroxysmal atrial fibrillation in patients with Wolff-Parkinson-White syndrome and the effects of elimination of accessory pathways on the appearance of atrial fibrillation are still controversial. Fifty-four patients with Wolff-Parkinson-White syndrome were classified into three groups: a No AF group (n = 24), patients without paroxysmal atrial fibrillation; ...
Soncini M - - 1997
BACKGROUND: We have studied 64 patients with congestive heart failure, half of them also with chronic nonvalvular atrial fibrillation (AF). Patients were also stratified according to a history of prior stroke. METHODS: The generation of thrombin was investigated by means of the molecular markers prothrombin fragment 1 + 2 (F1 ...
Kowey P R - - 1997
Atrial fibrillation (AF) is a common arrhythmia in patients with hypertensive heart disease. In addition, the presence of hypertension in patients with AF constitutes an important risk factor for the development of thromboembolic events and probably also selects out those individuals who may be resistant to drug therapy. AF in ...
Tsai L M - - 1997
A prospective study was designed to investigate potential changes of left atrial (LA) spontaneous echo contrast with time and the effects of antithrombotic therapy on its presence in 77 patients with chronic nonrheumatic atrial fibrillation (AF), using serial transesophageal echocardiography (TEE). During a mean follow-up period of 20 +/- 15 ...
Rosenheck S - - 1997
The theoretical and experimental rational of atrial signal-averaged ECG in patients with AF is delay in the intra-atrial and interatrial conduction. Similar to the ventricular signal-averaged ECG, the atrial signal-averaged ECG is an averaging of a high number of consecutive P waves that match the template created earlier P wave ...
Neri R - - 1997
Transvenous internal cardioversion of chronic AF using a right atrium (RA) coronary sinus (CS) vector requires more energy than cardioversion of paroxysmal AF. Chronic AF is not terminated in 25% of patients using biphasic shocks up to 10 J. We therefore evaluated efficacy, safety, and tolerability of internal cardioversion using ...
- - 1997
Clinical trials have consistently shown warfarin's high degree of efficacy for stroke prevention in patients with nonvalvular atrial fibrillation (AF). However, aspirin therapy may be sufficient for large subgroups of low-risk AF patients. In addition, many elderly AF patients cannot receive or sustain adjusted-dose warfarin because of bleeding (minor and ...
Hendey G W - - 1997
STUDY OBJECTIVE: To determine the sensitivity of the urine ketone dip test (UKDT) for the detection of ketonemia in patients with diabetic ketoacidosis (DKA) and diabetic ketosis (DK) in the ED. METHODS: We conducted a retrospective chart review in the ED of an urban, university-affiliated county teaching hospital. The study ...
Delise P - - 1997
Some patients with atrioventricular (AV) node reentrant tachycardia (AVN RT) also presented with atrial fibrillation (AF). In this study we demonstrate that slow pathway ablation is able to suppress both AVN RT and AF in subjects without structural heart abnormalities, whereas in patients with structural heart abnormalities after ablation AF ...
Takahashi N - - 1997
Non-anemic macrocytosis is occasionally observed in patients with a history of alcoholism or chronic liver disease. Recently we reported that patients with atrial fibrillation (AF) had larger erythrocytes than normal subjects. In the present study, we examined the temporal changes in hematologic measurements during the development of AF in 88 ...
Riccardi R - - 1997
Clinical electrophysiology has not yet clearly defined atrial features that can predict spontaneous occurrence of atrial fibrillation (AF). The aim of this work was to identify atrial electrophysiological features that can distinguish Wolff-Parkinson-White patients with spontaneous AF from those without this arrhythmia. Sixty-nine patients with Wolff-Parkinson-White were divided into three ...
Cucchiara S - - 1997
BACKGROUND: The macrolide antibiotic erythromycin (EM) affects gastrointestinal motor activity by acting as agonist of motilin receptors located on the smooth muscle cells of the gastroduodenal tract. We studied the effect of intravenous EM on fasting antroduodenal motility in controls and children with gastrointestinal dysmotility. METHODS: EM lactobionate (rate, 3.0 ...
Stafford P J - - 1997
Patients with paroxysmal atrial fibrillation (AF) have greater overall P wave magnitude than control subjects, but the temporal localization of the increased energy is unknown. P wave spectral turbulence has not been investigated in such patients, and the optimum methodology for studying P wave signals has not been defined. This ...
Ramadan H H - - 1997
Allergic fungal sinusitis (AFS) is a distinct clinical pathologic entity that has been recognized for over a decade. The hallmark of this process is eosinophilic allergic mucin with fungal hyphae on histopathology. We have identified a subset of patients who present with a clinical picture similar to that of AFS ...
Yamashita T - - 1997
BACKGROUND: Atrial fibrillation/flutter (Af) has been considered to occur coincidentally with atrioventricular (AV) block. However, a case with complete AV block was reported to histologically show fibrotic changes solely in the atrial muscles but neither in the AV node nor in the His bundle, indicating a possible relation between AV ...
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