Intravascular ultrasound assisted endovascular therapy for renal artery stenosis
10.13929/j.issn.1672-8475.2024.11.002
- VernacularTitle:血管内超声辅助腔内治疗肾动脉狭窄
- Author:
Guifang TAN
1
;
Zepeng SHI
;
Zhigang LIU
;
Shen LI
;
Chunyu YU
;
Meng ZHANG
;
Yi ZHANG
;
Rong XING
;
Chunmei ZHANG
;
Yong QIAN
Author Information
1. 大连理工大学附属中心医院(大连市中心医院)周围介入科,辽宁 大连 116000
- Keywords:
renal artery;
stenosis;
stents;
ultrasonography
- From:
Chinese Journal of Interventional Imaging and Therapy
2024;21(11):654-658
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the value of intravascular ultrasound(IVUS)for assisting endovascular therapy for renal artery stenosis(RAS).Methods Thirty patients with RAS who underwent endovascular therapy were retrospectively analyzed.Parameters of renal artery and plaques in RAS segment measured with CT angiography(CTA)and IVUS before treatment were compared.Bland-Altman diagram was performed to evaluate the consistency of lumen cross-sectional stenosis rate and plaque eccentricity index between CTA and IVUS.The stent parameters measured with IVUS were recorded immediately after implantation of balloon-expandable covered stents.Results Before treatment,the minimum lumen diameter,lumen cross-sectional stenosis rate and stenotic segment length of IVUS were all larger,while maximum lumen diameter and lumen eccentricity index of IVUS were both smaller than those of CTA(all P＜0.05).No significant difference of plaque eccentricity index,plaque type nor stenosis distal remodeling was found between CTA and IVUS(all P＞0.05).The average difference between IVUS and CTA for evaluating lumen cross-sectional stenosis rate and plaque eccentricity index was-0.020(-0.096,0.050)and-0.020(-0.130,0.091),respectively.The consistency of IVUS and CTA for evaluating plaque eccentricity index was better than that of lumen cross-sectional stenosis rate.The stent symmetry,stent eccentricity index,stent expansion coefficient and stenosis coverage rate immediately after implantation measured with IVUS was(82.69±14.61)%,(1.54±9.16)%,(99.81±10.70)%and 100%,respectively.Among 30 cases,2 cases(2/30,6.67%)underwent postdilation since poor stent apposition.Conclusion IVUS could assist evaluating lumen and plaque parameters of stenotic renal arteries,guiding stent release and real-timely monitoring the effect of endovascular therapy.
