AI Article Synopsis
- Comparative sonographic examination of the renal resistance index (RRI) is useful in detecting renal artery stenosis, but the impact of stent graft implantation on RRI is unclear.
- This study aimed to evaluate how stent graft implantation into healthy renal arteries affects the RRI during treatment for pararenal aortic aneurysms.
- In a group of 32 patients, RRI values showed no significant change before and after the stent graft implantation, indicating that RRI is reliable for assessing renal perfusion after such procedures.
Article Abstract
Comparative sonographic examination of the renal resistance index (RRI) can provide evidence of renal artery stenosis. The extent to which the RRI is changed after stent graft implantation is not known. The aim of this study was to investigate the influence of stent graft implantation into non-diseased renal arteries during endovascular treatment of pararenal aortic aneurysms on the RRI. Sonographic examinations of the kidneys were conducted using a GE ultrasound system. The evaluation was performed according to the European Society for Vascular Surgery (ESVS) 2D standard criteria. RRI values were determined in consecutive patients on the day before and after stent graft implantation and compared for each kidney. A total of 32 consecutive patients (73.9 ± 8.2 years, 5 females, 27 males) were treated with a fenestrated or branched aortic stent graft including bridging stent graft implantations into both renal arteries and received pre- and postinterventional examinations. Sonomorphologically, the examined kidneys were inconspicuous. The arborisation of the renal perfusion was preserved pre- and post-implantation. The RRI did not differ (0.66 ± 0.06 versus 0.67 ± 0.07; = ns). Successful stent graft implantation into non-stenosed renal arteries did not lead to a relevant change in RRI. Therefore, the RRI is a suitable tool for assessing renal perfusion after fenestrated or branched endovascular aortic therapy.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11394166 | PMC |
| http://dx.doi.org/10.3390/diagnostics14171860 | DOI Listing |
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