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Results 401 - 450 of 741
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Levine J H - - 1996
Twenty-seven patients with asymptomatic, nonsustained ventricular tachycardia whose evaluation suggested they were at high risk for sustained ventricular arrhythmias were treated with implantable cardioverter defibrillators. The option of conventional therapy (including the option of no therapy) was presented to each patient and rejected in favor of defibrillator implantation on an ...
Yilmaz A T - - 1996
AIM OF STUDY: To evaluate the necessity and efficacy of quinidine fumarate, verapimil, or amiodarone prophylaxis for sinus rhythm maintenance in patients who experienced atrial fibrillation after coronary artery bypass surgery. METHODS: Between 1992 and 1995, this prospective, randomized, placebo-controlled study examined 120 patients in whom atrial fibrillation occurred and ...
Chambers D J - - 1996
BACKGROUND: Experimentally, creatine phosphate (CP) improves postischemic recovery of function and reduces postischemic arrhythmias. METHODS: We studied 50 patients undergoing valve replacement. They were randomized into either a control group, who received St. Thomas' Hospital cardioplegic solution No. 1, or a CP-treated group, receiving the same cardioplegic solution plus CP ...
Verza M - - 1996
Theophylline increases the heart rate in patients with normal sinus rhythm and in patients with sick sinus syndrome. This effect is probably connected to the blockade of adenosine receptors by theophylline. This study evaluated the efficacy of theophylline in 34 elderly patients with symptomatic sinus bradycardia (age 68 +/- 11 ...
Chimienti M - - 1995
In order to compare the long-term safety of flecainide and propafenone, an open label, randomized, parallel group study was performed in 335 patients with paroxysmal atrial fibrillation (n = 200) or paroxysmal supraventricular tachycardia (n = 135), and no history of heart disease. Patients were treated with an initial daily ...
Palmieri G M - - 1995
OBJECTIVE: To test the hypothesis that the calcium antagonist diltiazem is effective in the treatment of calcinosis. METHODS: Diltiazem, 240-480 mg/day, was given to 4 patients with idiopathic or CREST-related (calcinosis, Raynaud's phenomenon, esophageal dysmotility, sclerodactyly, telangiectasias) calcinosis for 1-12 years. Serial radiographs of the affected areas, using identical technique, ...
Bouboulis N - - 1995
Fifty-two consecutive patients with nonischemic ventricular tachycardia (VT) were seen between 1985 and 1991. Twenty-two patients underwent surgery, while in the remaining 30, the VT was well controlled on medication. In the surgical group, arrhythmogenic right ventricular dysplasia (ARVD) was the cause of VT in 12 patients, cardiomyopathy (CM) in ...
Cohen M B - - 1995
The purpose of this study was to evaluate the efficacy, safety, and tolerance of pindolol as initial therapy for vasovagal syncope. Head-up tilt table testing (HUT) was performed on 192 patients for syncope or near-syncope of unknown cause. Forty-four (23%) patients had a positive HUT for vasovagal syncope, and 28 ...
Garguichevich J J - - 1995
The efficiency of prophylactic antiarrhythmic treatment with amiodarone in reducing 1-year mortality in patients with reduced left ventricular ejection fraction ( < 35%) and asymptomatic ventricular arrhythmias (Lown classes 2 and 4) was investigated in a prospective, multicenter, randomized, controlled study. Among 127 patients who entered the study, 61 were ...
Kottkamp H - - 1995
BACKGROUND: The feasibility of radiofrequency (RF) catheter ablation for the treatment of sustained ventricular tachycardia (VT) in patients with coronary artery disease and remote myocardial infarction has recently been demonstrated. At present, therapeutic options for VT in patients with idiopathic dilated cardiomyopathy (DCM) include antiarrhythmic drugs and implantable cardioverter/defibrillators (ICD). ...
Amar D - - 1995
BACKGROUND: Supraventricular tachydysrhythmias (SVTs) following thoracic surgery occur with significant frequency and may be associated with increased morbidity. Prospective data on the etiology and importance of these dysrhythmias are sparse. METHODS: In 100 patients undergoing pulmonary resection without history of atrial dysrhythmias or previous thoracic surgery, we examined the effects ...
Chun S H - - 1995
The purpose of this study was to examine the efficacy and safety of amiodarone to maintain sinus rhythm in patients with refractory atrial fibrillation or flutter. One hundred ten patients with atrial fibrillation or flutter, refractory to > or = 1 class I antiarrhythmic agents (mean +/- SD 2.5 +/- ...
Gillis A M - - 1995
BACKGROUND: Noninvasive electrophysiological studies (EPSs) can be performed in current implantable antitachycardia pacemaker/cardioverter/defibrillators (ICDs). Thus, these devices may be used as tools to study changes in the electrophysiological substrate and ventricular tachycardia characteristics over time. METHODS AND RESULTS: Fifty-five patients receiving an ICD for treatment of sustained ventricular tachyarrhythmias underwent ...
Babuty D - - 1995
In a randomized, double-blind, parallel clinical trial, the authors tested and compared flecainide and cibenzoline, a new antiarrhythmic drug, on atrial arrhythmias. Sixty-eight patients (36 men, 32 women, mean age 62.5 +/- 1.6 years) with documented symptomatic paroxysmal atrial arrhythmias (fibrillation in 56, flutter in 12) were recruited and received ...
Goldner B - - 1995
BACKGROUND: Initial management of patients with supraventricular tachycardias has traditionally been with medications. More recently, radiofrequency catheter ablation offers curative therapy thus obviating the need for medications with potential side effects. The purpose of this study was to evaluate radiofrequency catheter ablation as an initial strategy to cure supraventricular tachycardias. ...
Choudhri S H - - 1995
A 66-year-old Indian male who had been treated for recurrent erythema nodosum leprosum with 300 mg of clofazimine per day for 11 months presented to hospital with a 4 week history of severe gastrointestinal upset. Soon after admission he developed several short runs of ventricular tachycardia with a morphology suggestive ...
O'Connor P J - - 1995
The three objectives of this study were: 1) to determine whether an initial exposure to systemic hypoxia could affect the ventricular ectopy caused by a second period of hypoxia, 2) to see whether the duration of the intervening period of reoxygenation was important, and 3) to determine whether propranolol could ...
Chang Y C - - 1995
Supraventricular tachycardia (SVT) is the most common cardiac arrhythmia in children. Atrioventricular (AV) reciprocating tachycardia utilizing an accessory pathway and AV nodal reentrant tachycardia (AVNRT) constitute a majority of SVTs. Radiofrequency energy ablation has recently become the treatment of choice in adults. Initial experience in pediatric patients in this Institute ...
Shechter M - - 1995
Thrombolytic therapy reduces in-hospital mortality. However, 70% to 80% of patients do not receive thrombolysis and their in-hospital mortality is high. During the last decade some clinical trials demonstrated that magnesium sulfate reduced in-hospital mortality. The aim of this study was to evaluate the effects of magnesium sulfate in patients ...
Misaki T - - 1995
BACKGROUND: This study examined the long-term clinical outcome of patients with focal atrial tachycardia who were treated surgically. Focal atrial tachycardia is a relatively rare arrhythmia that is often difficult to control with conventional medical therapy. Therapeutic modalities are not well defined because of the scarcity of long-term data of ...
Dhala A - - 1995
The prognosis of patients manifesting prolonged asystole during head-up tilt testing is unclear. In 209 consecutive patients with a history of syncope and positive head-up tilt tests, 19 had asystole lasting > 5 seconds (mean duration 15 +/- 10) (group 1a). When compared with patients without asystole (group 1b), group ...
Benditt D G - - 1995
PURPOSE: To review the status of cardiac pacing for the treatment of patients with recurrent vasovagal syncope. DATA SOURCES: A MEDLINE search for English- and French-language articles published between 1980 and 1994 about cardiac pacing for prevention or treatment of vasovagal syncope. The term cardiac pacing was used in conjunction ...
Brembilla-Perrot B - - 1995
Rapid ventricular pacing (VP) reproduces neurohumoral variations associated with ventricular tachycardia. This study was set up to analyse the mechanisms that cause changes in sinus heart rate after rapid VP and to find the clinical factors that adapt sinus heart rate to VP, and the clinical value of the method. ...
Janousek J - - 1995
This study evaluates the role of late potentials in identifying patients with sustained ventricular tachycardia (VT) after surgery for congenital heart defects using right ventriculotomy. Nine patients with early (1 to 12 months) or late VT (spontaneous in 7 [induced during electrophysiologic study in 6 of the 7] and induced ...
Heisel A - - 1995
The purpose of this study was to investigate the efficacy and safety of antitachycardia pacing (ATP) in third-generation implantable cardioverter defibrillators (ICDs) for terminating spontaneously occurring ventricular tachycardias (VTs) in patients with severely depressed left ventricular (LV) function. Ninety-one patients with active ATP were followed for 16 +/- 13 months. ...
Merrick A F - - 1995
To compare the efficacy of propafenone to atenolol in the prevention of supraventricular tachyarrhythmias (SVT) following cardiac surgery, 207 consecutive patients were randomly allocated to receive either propafenone 300 mg twice daily (105 patients) or atenolol 50 mg once daily (102 patients) orally for 7 days after operation. Double blinding ...
el Allaf D - - 1995
Hundred and twenty-three outpatients were treated with oral cibenzoline for 3 months in order to test the efficacy and safety of the compound in the prevention of the recurrence of supraventricular arrhythmias. The dose was 260-390 mg/day for those under 70 and 130-260 mg/day for those over 70 years. All ...
Aydin M - - 1995
Supraventricular tachycardia (SVT) is a life-threatening dysrhythmia in childhood. Initial treatment includes classic vagal maneuvers, some pharmacological agents, cardioversion and application of ice water to the face. In this paper we report our results of ice water application to the face in SVT. The study included ten patients between the ...
Janousek J - - 1994
359 patients after the Mustard (275) or Senning (84) operations for transposition of the great arteries were followed-up for a mean of 103.7 (range 0.4 to 204) months. 259 patients had postoperative 24-h Holter recordings. In 129 Mustard children serial (mean 4.4) postoperative Holter recordings were available for evaluation. Criteria ...
Trappe H J - - 1994
It has been shown that conventional antiarrhythmic drug treatment is debatable, and there is growing interest in nonpharmacological techniques. We studied the outcome of 554 patients with ventricular tachycardia (VT) or ventricular fibrillation (VF) who underwent nonpharmacological techniques from March 1980 to June 1994 at our institution. Catheter ablation was ...
Botto G L - - 1994
The incidence of fast atrial tachycardias with regular ventricular rhythm was assessed in a population of 243 patients with recent onset (< 72 hours) atrial fibrillation (AF), without heart failure, randomly treated with single loading oral dose of propafenone (600 mg), flecainide (300 mg), digoxin (1 mg), or placebo for ...
Dhala A - - 1994
The safety and efficacy of radiofrequency catheter modification of the atrioventricular node for atrioventricular nodal reentrant tachycardia in the pediatric population is described. Twenty-one patients with a mean age of 14.9 +/- 3.6 years underwent slow-pathway atrioventricular nodal modification with a stepwise anatomic approach. The average cumulative fluoroscopy exposure time ...
Hohnloser S H - - 1994
PURPOSE: To assess the incidence of amiodarone-mediated aggravation of ventricular tachyarrhythmias or the development of new arrhythmias, such as torsade de pointes, in patients with cardiac disease. DATA SOURCES AND STUDY SELECTION: A MEDLINE literature search was done to identify articles published during the last 20 years that presented data ...
Hainsworth R - - 1994
Orthostatic tolerance in 79 patients complaining of attacks of unexplained syncope, was assessed as the time to imminent syncope in a test involving: head-up tilt by 60 degrees for 20 min, followed by tilt and lower body suction at -20 and -40 mmHg for 10 min at each. Blood pressure ...
Sager P T - - 1994
BACKGROUND: The autonomic nervous system appears to play an important role in the development of clinical ventricular arrhythmias, and beta-adrenergic sympathetic stimulation may be important in modulating the electrophysiologic effects of class III antiarrhythmic agents. This study prospectively determined the effects of isoproterenol on the frequency-dependent actions of sematilide (a ...
Larsen G C - - 1994
OBJECTIVE: To determine when survivors of ventricular tachycardia (VT) or ventricular fibrillation (VF) might most safely return to driving. DESIGN: Consecutive case series of 501 VT and VF survivors discharged alive between August 1978 and October 1989 and followed from 0 to 117 months (mean, 26 months). SETTING: Cardiac arrhythmia ...
Nath S - - 1994
INTRODUCTION: In prior studies, 20% to 40% of patients undergoing subendocardial resection (SER) for ventricular tachycardia (VT) could not be mapped intraoperatively because the VT was either noninducible or nonmappable following the ventriculotomy. The optimal surgical approach to such patients is not known. METHODS AND RESULTS: In this study, we ...
Disch D L - - 1994
OBJECTIVE: To compare the relative risks and benefits of several clinical strategies for managing patients with chronic atrial fibrillation. DESIGN: Five recent randomized controlled trials of warfarin in atrial fibrillation, 6 randomized controlled trials of quinidine, and 13 longitudinal studies of low-dose amiodarone were used. A MEDLINE search was also ...
Glick D B - - 1994
The field of arrhythmia surgery has changed markedly over the past several years. The increased effectiveness of catheter ablation for the treatment of supraventricular tachycardias, the increasingly common use of surgical techniques for treating atrial fibrillation, and the continued refinement of implantable cardioverter-defibrillator technology have all altered decision-making regarding the ...
Barranco F - - 1994
OBJECTIVE: Evaluation of efficacy of intravenous flecainide to revert supraventricular arrhythmias to sinus rhythm in patients with respiratory insufficiency. DESIGN: Comparative randomized prospective trial. SETTING: ICU in a University Hospital. PATIENTS: 30 patients with acute respiratory insufficiency or acute exacerbation of chronic respiratory insufficiency and supraventricular arrhythmias. Intravenous flecainide was ...
Turitto G - - 1994
The value of time-domain and frequency-domain (spectral turbulence) analyses of the signal-averaged electrocardiogram was investigated to predict induced sustained monomorphic ventricular tachycardia (VT). Two groups of patients with spontaneous nonsustained VT and left ventricular ejection fraction less than 50% were enrolled: 70 patients with idiopathic dilated cardiomyopathy (group 1) and ...
Cochrane A D - - 1994
Despite the widespread use of amiodarone in non-surgical patients, its role in the management of supraventricular tachyarrhythmias after cardiac surgery is not clear. We set out to compare the relative efficacy of amiodarone and digoxin in the management of atrial fibrillation and flutter in the early postoperative period. This prospective ...
Wu M H - - 1994
Supraventricular tachycardia (SVT) in pediatric patients is usually associated with a better prognosis than that in adults. However, late recurrence of SVT has been recently described. A total of 90 patients who had their initial SVT episode before 15 years of age were retrospectively studied (2-228 follow-up months; median, 215 ...
Cornacchia D - - 1993
The aim of this study was to evaluate chronic ventricular pacing threshold increase after oral propafenone therapy. Eighty-three patients affected by advanced atrioventricular block and sick sinus syndrome were studied at least 3 months after pacemaker implantation, before and after oral propafenone therapy (450-900 mg/day based on body weight). The ...
Navarro-López F - - 1993
A randomized trial was conducted to assess the efficacy of amiodarone versus metoprolol or no antiarrhythmic treatment to suppress asymptomatic ectopic activity and improve survival in patients who have had myocardial infarction with a left ventricular ejection fraction of 20 to 45% and > or = 3 ventricular premature complexes ...
Connolly S J - - 1993
The Canadian Implantable Defibrillator Study (CIDS) is an on-going randomized multicenter clinical trial that compares implantable cardioverter-defibrillator (ICD) therapy against amiodarone in patients with prior cardiac arrest or hemodynamically unstable ventricular tachycardia. Eligible patients are equally randomized to receive or not receive an ICD as initial management. Those not receiving ...
Alboni P - - 1993
In 17 patients (aged 78 +/- 9 years) with symptomatic atrial fibrillation and a slow ventricular response not related to drugs, a resting electrocardiogram and 24-hour Holter recording were obtained before and 5 to 6 days after administration of slow-release theophylline (700 mg/day), and successively every 3 months during the ...
Brachmann J - - 1993
To evaluate the clinical efficacy of d-sotalol, 84 patients with a history of sustained ventricular tachycardia (VT) or ventricular fibrillation (VF), who had inducible sustained VT/VT at baseline electrophysiologic study (EPS), were investigated after intravenous (IV) d-sotalol (1.5-2.5 mg.kg-1). A total of 29 additional patients received only oral d-sotalol, (400-600 ...
Tobé T J - - 1993
Although a number of studies have shown that the incidence of late potentials is lower after thrombolytic therapy, it is not known whether this is paralleled by fewer arrhythmic events during long-term follow-up. In patients with first acute myocardial infarction, filtered QRS duration was significantly shorter when treated with streptokinase ...
Lesh M D - - 1993
The field of clinical electrophysiology has broadened significantly in the last several years, spawning a new discipline known as Interventional or Therapeutic Electrophysiology. In the United States, Electrophysiology has its own training path and accreditation requirements. One of the reasons for the growth of interest in electrophysiology is the exciting ...
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