Paroxysmal Supraventricular Tachycardia
Conditions
Keywords
paroxysmal supraventricular tachycardia, Left Atrial Function
Brief summary
This study to investigate the effects of RF ablation on left atrial systolic function in patients with atrioventricular nodal reentrant tachycardia (AVNRT) and atrioventricular tachycardia (AVRT).
Detailed description
A total of 100 patients with persistent，in whom successful RF ablation of slow pathway or accessory pathway was performed. Patients with atrial fibrillation, structural heart disease, ventricular arrhythmias, impaired left ventricular systolic function or on antiarrhythmics were excluded. All the patients had echocardiographic study before ablation 、1 day and 1 months after ablation. Left atrial systolic function was assessed using atrial ejection force (AEF) according to Manning's formula (AEF = 0.5 x ρ x MA x A(2), r: blood density = 1.06 g/cm(3), MA: mitral orifice area \[cm(2)\], A: A wave velocity). The following left atrial dimensions were assessed: antero-posterior (LA-AP), infero-superior (LA-IS, long axis), medio-lateral (LA-ML, short axis). The correlations between AEF and electrophysiological parameters were analysed (VA - ventriculo-atrial conduction, VA/CL - tachycardia cycle length).
Interventions
PROCEDUREradiofrequency ablation
Sponsors
Ruiqin xie
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)
Intervention model description
A total of 100 patients with persistent，in whom successful RF ablation of slow pathway or accessory pathway was performed. Patients with atrial fibrillation, structural heart disease, ventricular arrhythmias, impaired left ventricular systolic function or on antiarrhythmics were excluded. All the patients had echocardiographic study before ablation 、1 day and 1 months after ablation.
Eligibility
Sex/Gender
ALL
Age
14 Years to No maximum
Healthy volunteers
No
Inclusion criteria
Patients with paroxysmal supraventricular tachycardia,includes atrioventricular reentrant tachycardia and atrioventricular nodal reentrant tachycardia， Age is \>14 years
Exclusion criteria
Atrial fibrillation, Atrial tachycardia， Structural heart disease, Ventricular arrhythmias, Patients with impaired left ventricular systolic function or on antiarrhythmics
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Left Atrial Function of postoperative radiofrequency ablation. | 1 month |
Countries
China
Outcome results
None listed