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Screening for, and management of, possible arrhythmogenic syndromes (channelopathies/ion channel diseases)
Jesper Hastrup Svendsen1, Peter Geelen,
1Department of Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen and The Danish National Research Foundation Centre for Cardiac Arrhythmia, Denmark. hastrup@rh.dk
Insights
European centers manage arrhythmogenic syndromes like long QT syndrome (LQTS) and Brugada syndrome (BS) using primarily non-invasive tests and genetic testing. Management focuses on first-degree relatives of affected individuals.
Area of Science:
- Cardiology
- Genetics
- Electrophysiology
Background:
- Arrhythmogenic syndromes, including LQTS, BS, CPVT, and SQTS, pose significant risks.
- Effective management strategies are crucial for patients and their families.
Purpose of the Study:
- To survey current management strategies for arrhythmogenic syndromes in European centers.
- To identify trends in diagnostic and genetic testing approaches.
Main Methods:
- Survey distributed to 44 large European centers.
- Data collected on patient demographics, diagnostic work-up, and genetic testing.
- Focus on management of index patients and family members.
Main Results:
- Low incidence of new arrhythmogenic syndrome cases.
- Predominance of non-invasive diagnostic tests.
- High utilization of genetic testing, particularly for LQTS and CPVT.
- Common use of EP testing in asymptomatic BS patients and relatives.
- Focus on first-degree relatives for family screening.
Conclusions:
- Current management of arrhythmogenic syndromes in Europe is characterized by non-invasive diagnostics and significant genetic testing.
- Electrophysiology testing plays a role in specific Brugada syndrome scenarios.
- Family screening primarily targets first-degree relatives.
Abstract:
This survey assesses the current management strategies for individuals with electrocardiographic features, suggesting an arrhythmogenic syndrome [including long QT syndrome (LQTS), Brugada syndrome (BS), catecholaminergic polymorphic ventricular tachycardia (CPVT) or short QT syndrome] or family members of patients with a known arrhythmogenic syndrome, in 44 large European centres. The principal findings of this survey were: (i) the number of new patients with arrhythmogenic syndromes (symptomatic and asymptomatic) is relatively small; (ii) the clinical work-up of these patients consists mainly of non-invasive tests; (iii) a relatively high use of genetic testing is noted, especially in LQTS and CPVT; (iv) EP testing is commonly performed in asymptomatic BS patients and in family members of symptomatic BS patients; and (v) the majority of European electrophysiologists focus on first-degree relatives when dealing with family members of an index patient.
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