Arrhythmias & electrophysiology
The risk of failure of subcutaneous implantable cardioverter defibrillator therapy: from PRAETORIAN score to clinical practice
Authors' conclusion
In contemporary practice, the PRAETORIAN score can be simplified.
Study context
- Population
- Patients who underwent subcutaneous implantable cardioverter defibrillator (S-ICD) implantation with intermuscular generator positioning
- Participants
- 1,253 patients · 33 centres
- Outcome
- Correlation of PRAETORIAN score with clinical characteristics and implantation variables
Methodological detailsmulticentre, 33 centres
- Multicentre
- 33 centres
Main finding
As reported in the abstract
PRAETORIAN score
PRAETORIAN score <90 (low risk of conversion failure)
95.7%
Optimal posterior device placement with intermuscular technique
all patients
Significant sub-generator fat
3%
Shock impedance >88 Ohm detecting score ≥90: NPV
98%
95% CI 97–99%
Observational data: associations, not effects.
Original publication
The risk of failure of subcutaneous implantable cardioverter defibrillator therapy: from PRAETORIAN score to clinical practice. Europace. Published 21 January 2025. doi:10.
Summarised from the published abstract; every number is checked against it