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Study on Left Atrial Function of Paroxysmal Supraventricular Tachycardia After Radiofrequency Ablation

Paroxysmal Supraventricular Tachycardia Clinical Trial

Official title:
Study on Left Atrial Function of Paroxysmal Supraventricular Tachycardia After Radiofrequency Ablation

Clinical Trial 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).

Clinical Trial 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). ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT03348436
Study type Interventional
Source The Second Hospital of Hebei Medical University
Contact
Status Completed
Phase N/A
Start date January 1, 2017
Completion date March 1, 2020
View Details
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