Arrhythmias & electrophysiology
Clinical characteristics of electrical storm in patients with early repolarization syndrome
Authors' conclusion
Patients with ERS in the ES group frequently had short QT and QTp intervals, pilsicainide-induced ST elevations, and high Shanghai Score System scores. Therapeutic hypothermia was also associated with acute phase ES.
Study context
- Population
- Patients with early repolarization syndrome (ERS) who experienced ventricular fibrillation (VF)/SCD or arrhythmic syncope
- Participants
- 44 patients
- Exposure
- Electrical storm (ES) vs no ES
- ESn = 13
- Outcome
- Electrical storm and its risk factors
Main finding
As reported in the abstract
Electrical storm
Patients experiencing ES
13
30%
ES during acute phase of initial VF episodes
11
85%
ES during follow-up
2
2%
VF with ES during therapeutic hypothermia
6 of 13
46%
Observational data: associations, not effects.
Further findings
J-wave voltage during therapeutic hypothermia
- Higher in ES than without ES
Isoproterenol use
- Used in 5 patients (38%); decreased J-wave voltage and relieved ES
- 5 (38%)
Pilsicainide-induced ST elevation; spontaneous Brugada ECG pattern
- Pilsicainide induced ST elevation
- 6 of 34 (18%)
- Spontaneous Brugada ECG patterns did not appear associated with VF
Original publication
Clinical characteristics of electrical storm in patients with early repolarization syndrome. Heart Rhythm. Published 17 January 2024. doi:10.
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