BACKGROUND The vagal maneuvers used for termination of paroxysmal supraventricular reentrant tachycardia (PSVT) appear to involve more complex mechanisms than we have known, and further study should be done to explore the possible mechanisms. METHODS AND RESULTS In this study, 133 patients with PSVT and 30 age- and sex-matched control subjects were included. We assessed the effects of differe...

The aim of this study was to assess memory functioning among children and adolescents with atrial-ventricular nodal re-entry tachycardia (AVNRT) and atrial-ventricular re-entry tachycardia (AVRT). A total of 113 pediatric cardiology clinic patients (62 F, 51 M), aged 9–18 years, who were scheduled for radiofrequency ablation due to AVRT or AVNRT underwent neuropsychological examination. Patient...

A 19-year-old female underwent repair of complex congenital heart disease (atrial and ventricular septal defect with a supero-inferior ventricular relationship) in infancy. Because of recurrent palpitations she underwent an electrophysiology study. Atypical atrioventricular nodal reentrant tachycardia was diagnosed. Catheter ablation was performed successfully using cryothermal energy. The diag...

There is a narrow complex tachycardia with a rate of approximately 160 beats/min. The electrical axis is intermediate (almost vertical). In every supraventricular tachycardia the position of the P wave is critical for the diagnosis. Here the P wave seems to be present 120 ms before the QRS complex (i.e. long RP, short PR interval). The P-wave configuration is negative in leads II and III and po...

AIM To assess the efficacy of propafenone in prevention of atrioventricular nodal reentrant tachycardia (AVNRT) and orthodromic atrioventricular tachycardia (AVRT) based on the clinical results of arrhythmia recurrence and find the electrophysiological predictor of propafenone effectiveness. METHODS This retrospective study included 44 participants in a 12-month period, who were divided in tw...

Aims: To characterize the plasma levels of the atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP) in patients with atrioventricular nodal reentry tachycardia (AVNRT), we measured the plasma levels of these peptides before and during tachycardia. Methods: We included 10 consecutive patients scheduled for ablation of typical AVNRT without structural heart disease. Catheters were...

Modification of atrioventricular node is a usual and necessary operation to cure atrioventricular nodal reentrant tachycardia (AVNRT). In this operation, atrioventricular block is the most severe complication and its prevention is of our great concern. This complication always occurs under some special circumstances with potential risk. So, it is very important to realize such conditions, as in...

A healthy 15-year-old male patient presented with a 6-month history of recurrent attacks of palpitations. On multiple emergency room visits, a sustained wide QRS complex tachycardia with a right bundle branch block and northwest axis deviation was documented. The tachycardia was not terminated by intravenous adenosine, but was suppressed with intravenous verapamil. There was no evidence of stru...

Background: Paroxysmal supraventricular tachycardia (NNKPTT) is the most common clinical occurrence, affecting hemodynamics and causing symptoms of palpitations dyspnea in patients. Of mechanisms that cause paroxysmal tachycardia, atrioventricular nodal re-entry (AVNRT), re-entrant (AVRT), atrial (AT) are difficult to distinguish each other. The electrocardiogram can be used confirm diagnose me...