Arrhythmias & electrophysiologyCohort study
An unmet need: arrhythmia detection by implantable loop recorder in the systemic right ventricle
- Prospective cohort study
Authors' conclusion
Continuous monitoring with an ILR in patients with systemic right ventricle following atrial switch detects clinically relevant arrhythmias that impact decision-making. In this cohort, clinically relevant arrhythmias did not correlate with sudden cardiac death risk.
Study context
- Population
- Patients with systemic RV after atrial switch repair for transposition of the great arteries36 eligible
- Participants
- 24 patients
- Outcome
- Early detection of clinically important arrhythmias by continuous rhythm monitoring with an implantable loop recorder (ILR)
Main finding
As reported in the abstract
Clinically significant ILR recordings · 39.5 months (1.6-72.5)
- Patients making recordings
- 18/24 (75%)
- Recordings made (52% automated)
- 52
- Clinically significant recordings
- 32/52 (62%)
- Patients with clinically significant recordings
- 15/24 (63%)
- Sinus node disease
- 2 patients
- AV block
- 2 patients
- IART
- 7 patients
- IART with sinus node disease or AV block
- 4 patients
Observational data: associations, not effects.
Further findings
Management change prompted by implantable loop recorder (ILR) recordings
- Medication change
- 11 patients
- Beta-blockers
- 9
- Anti-coagulation
- 5
- Stopping anti-coagulation
- 1
- Device therapy recommended
- 7 patients
- Pacemakers (3 for AV block)
- 5
- Defibrillators
- 2
- Declined intervention
- 2 patients
Arrhythmia vs SCD risk
- IART and clinically relevant conduction disease detected irrespective of SCD risk
Arrhythmic death among patients declining intervention
- Arrhythmic death
- 1
Safety
ILR implantation complications
- Complications
- 0
Original publication
An unmet need: arrhythmia detection by implantable loop recorder in the systemic right ventricle. Europace. Published 10 October 2023. doi:10.1093/europace/euad304
Summarised from the published abstract; every number is checked against it