Key result
3D CT confirms appropriate S-ICD positioning to safely omit DFT despite ambiguous X-rays.
Why the study?
Although the PRAETORIAN score predicts S-ICD defibrillation efficacy and allows omitting defibrillation testing, certain anatomical variations may limit its applicability.
Case Report (n=1)
In patients with anatomical anomalies such as phrenic nerve palsy, 3D CT evaluation can clarify the relationship between an S-ICD and the heart, supporting the safe omission of defibrillation testing when standard X-rays are ambiguous.
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Sanna et al. (2026) conducted a case report in S-ICD implantation with anatomic anomalies (n=1). 3D CT evaluation was evaluated. In a 76-year-old male with an optimal PRAETORIAN score (30 points) but ambiguous standing X-rays, 3D CT confirmed appropriate S-ICD positioning, allowing safe omission of defibrillation testing.
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