Non-invasive Differentiation of Supraventricular Tachyarrhythmia — NIDSA  

Atrial Fibrillation Clinical Trial

Official title: Non-invasive Differentiation of Supraventricular Tachyarrhythmias by Questionnaire and High-resolution ECG in the Context of Ablation Treatment

Status Recruiting

Clinical Trial Summary

1. Questionnaire for supraventricular tachycardia: About history and targeted diagnosis of supraventricular tachycardia

2. Extended Signal-averaged ECG for detailed P-Wave analysis and to calculate a virtual atrial electrocardiogram (ECG)

Clinical Trial Description

1. Questionnaire Patient questionnaires on supraventricular tachycardia including atrial fibrillation often refer to the symptoms of the cardiac arrhythmia and the resulting limitations in everyday life. The evaluation of these questionnaires only allows a rough differentiation between the various cardiac arrhythmias. Nevertheless, it is known that supraventricular tachycardias are influenced by the sympathetic and parasympathetic nervous system. For example, tachyarrhythmias can begin or be terminated with a reentry circuit through the atrioventricular (AV) node by Valsalva manoeuvres or some other change in tone of the nervus vagus. For atrioventricular reentrytachycardia (AVNRT) in particular, an increased probability of occurrence in poststress phases has been described, as well as an association with certain behaviours such as positional changes, but also alcohol and drug consumption. To date, there is no systematic questionnaire on the specific triggering and terminating components. All patients referred for ablation of a supraventricular arrhythmia and potentially included in this project will receive a detailed history of the triggering and terminating factors using a structured questionnaire, as well as two validated supraventricular tachycardia questionnaires (5Q-3L and ASTA) to classify the results of our questionnaire.

2. Extended ECG A high-resolution and signal-averaged ECG is recorded with a significantly higher resolution than a 12-lead ECG over a period of several minutes. Additional electrode positions are also used in the vicinity of the examined structure, e.g. the left atrium. The signal from several recorded heartbeats is then averaged. This preserves repetitive smallest atrial excitation patterns and changes. In this way, it is possible to find indications of cardiac arrhythmias like atrial fibrillation in the signal-averaged ECG, which were not detectable in a 12-lead ECG. ;

Related Conditions & MeSH terms

• Arrhythmias, Cardiac
• Atrial Fibrillation
• Supraventricular Arrhythmia
• Tachycardia

• NCT number: NCT06061120
• Study type: Observational
• Source: RWTH Aachen University
• Contact: Matthias D Zink, MD
• Phone: 00492418035113
• Email: mzink@ukaachen.de
• Status: Recruiting
• Start date: September 1, 2021
• Completion date: September 30, 2026