NCT03348436

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

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 100 (actual)
• Sponsor: Ruiqin xie · Academic / Other
• Sex: All
• Age: 14 Years
• Healthy volunteers: Not accepted

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).

Conditions

• Paroxysmal Supraventricular Tachycardia

Interventions

Type	Name	Description
PROCEDURE	radiofrequency ablation

Timeline

• Start date: 2017-01-01
• Primary completion: 2020-03-01
• Completion: 2020-03-01
• First posted: 2017-11-20
• Last updated: 2020-03-18

Locations

1 site across 1 country: China