CTICasesRiata Pacemaker Lead Externalization
Imaging findings
Radiograph and lateral view of a pacemaker system, when closely magnified, reveal structural failure with externalization of the inner conductor cables from the main lead body.
Key takeaways
Riata pacemaker leads are prone to a specific failure mechanism known as externalization, where the inner conductors wear through the outer silicone insulation. High-resolution magnification on radiographs is often required to detect this defect, which necessitates lead replacement due to the risk of electrical failure or inappropriate shocks.
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