SIR and the pick-up rate for asymptomatic SIR at three years was 98.3% and 98.7% (pϭ0.456), 82% and 83.5%(pϭ0.876) and 48% (nϭ33/68) and 45%(nϭ25/ 56)(pϭ0.34) respectively in protocol I and II. The two protocols initiated asymptomatic SIR in 7.5% of patients (mean 197; 35-1543 days). Symptomatic SIRs are more likely to occur within 30-day (mean 22; 1-1132 days) from the deployment.Conclusions: Our study showed that the type of surveillance imaging modality did not appear to influence the SIR rate while symptoms still trigger a significant rate of SIR following EVAR.
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