October 23, 2012Circulation Arrhythmia and Electrophysiology
Prevalence and Presentation of Externalized Conductors and Electrical Abnormalities in Riata Defibrillator Leads After Fluoroscopic Screening
Key result
Externalized conductors were found in 14.3% of Riata ICD leads via fluoroscopy, occurring more frequently in 8-F Riata than 7-F Riata ST leads (21.4% vs 8.0%; P<0.001).
Why the study?
What is the prevalence of externalized conductors and electrical abnormalities in Riata ICD leads assessed by fluoroscopic screening?
Population
1029 active Riata implantable cardioverter-defibrillator leads in patients identified by the Netherlands…
Design
Cross-sectional
Follow-up
Median time from implantation to detection 65.3 months
Authors
Discussion
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Member takes
Implication
May warrant fluoroscopic screening for Riata leads; leaves open optimal surveillance and outcome impact.
Study Design
Type
Cross-Sectional (n=1,029)
Multicenter
Yes
Structured PICO
What is the prevalence of externalized conductors and electrical abnormalities in Riata ICD leads assessed by fluoroscopic screening?
P
Population
1,029 patients with an active Riata ICD lead who underwent fluoroscopic screening and standard ICD interrogation.
E
Exposure
Fluoroscopic screening and standard ICD interrogation
O
Outcome
Prevalence of externalized conductors and electrical abnormalitiessafety
Main Result
Absolute Event Rate: 21.4% vs 8%
p-value: p=<0.001
Fluoroscopic screening reveals a high prevalence (14.3%) of externalized conductors in Riata ICD leads, the majority of which are not detectable by standard electrical interrogation.
Cite This Study
Theuns et al. (2012) conducted a cross-sectional in Active Riata ICD lead (n=1,029). 8-F Riata ICD lead vs. 7-F Riata ST ICD lead was evaluated on Externalized conductors (p=<0.001). Externalized conductors were found in 14.3% of Riata ICD leads via fluoroscopy, occurring more frequently in 8-F Riata than 7-F Riata ST leads (21.4% vs 8.0%; P<0.001).