OBJECTIVES The purposes of this study were to evaluate the atrial electrophysiology and autonomic nervous system in patients who had paroxysmal supraventricular tachycardia (PSVT) associated with paroxysmal atrial fibrillation (PAF). BACKGROUND PAF frequently appeared in patients with PSVT. However, the critical determinants for the occurrence of PAF were not clear. METHODS This study popul...

OBJECTIVES The aim of this study was to evaluate tecadenoson safety and efficacy during conversion of paroxysmal supraventricular tachycardia (PSVT) to sinus rhythm. BACKGROUND Tecadenoson (CVT-510), a novel adenosine receptor (Ado R) agonist, selectively activates the A1 Ado R and prolongs atrioventricular (AV) nodal conduction at doses lower than those required to cause A2 Ado R-mediated co...

propafenone hci (p), is a relatively new class ic antiarrhythmic agent. it has been reported to be superior to conventional antiarrhythmics in the control of supraventricular, ventricular and wpw associated tachyarrhythmias. it has been also shown to be well tolerated. in our study protocol, which extends over 2~ years period , we used (p) in 87 patients for management of various types of cardi...

BACKGROUND AND PURPOSE It is unknown whether supraventricular arrhythmias other than atrial fibrillation or flutter are associated with stroke. METHODS To examine the association between paroxysmal supraventricular tachycardia (PSVT) and stroke, we performed a retrospective cohort study using administrative claims data from all emergency department encounters and hospitalizations at Californi...

OBJECTIVES We sought to investigate the long-term efficacy of slow-pathway catheter ablation in patients with spontaneous, documented paroxysmal supraventricular tachycardia (PSVT) and dual atrioventricular (AV) node pathways but without inducible tachycardia. BACKGROUND The lack of reproduction of clinical PSVT by programmed electrical stimulation, which is not uncommon in AV node reentrant ...

OBJECTIVES The purpose of this prospective study was to quantitate the diagnostic value of several tachycardia features and pacing maneuvers in patients with paroxysmal supraventricular tachycardia (PSVT) in the electrophysiology laboratory. BACKGROUND No study has prospectively compared the value of multiple diagnostic tools in a large group of patients with PSVT. METHODS One hundred ninet...

The efficacy of a single oral dose combination of 120 mg diltiazem and 160 mg propranolol in terminating paroxysmal supraventricular tachycardia (PSVT) was evaluated in 15 patients. All 15 patients underwent electrical induction of PSVT that lasted longer than 15 min, and all underwent randomized crossover placebo and diltiazem and propranolol studies on 2 consecutive days. On each day PSVT was...

Normal and anomalous pathway properties were evaluated in 50 patients with preexcitation to discover determinants of paroxysmal supraventricular tachycardia (PSVT). Twenty-eight patients had inducible PSVT and 22 had no inducible PSVT. Patients with inducible PSVT had: 1) ability for retrograde anomalous pathway conduction demonstrated with ventricular pacing at short paced cycle lengths (< 429...

Electrophysiologic studies were performed in a patient with type B preexcitation and recurrent paroxysmal supraventricular tachycardia (PSVT). Atrial pacing at rates of 80/min and faster produced QRS normalization suggesting failure of the anomalous pathway. At a paced rate of 120/min, Wenckebach periods proximal to the His bundle as well as episodes of PSVT were noted. These episodes all occur...

Oral flecainide acetate was administered to 34 patients with documented symptomatic paroxysmal supraventricular tachycardia (PSVT) with a double-blind, placebo-controlled, 8-week crossover trial design. PSVT was defined as a regular tachycardia of at least 120 beats/min without evidence of atrioventricular dissociation. The study required considerable patient cooperation. Patients first entered...