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Intravascular ultrasound provides additional insights in the hypertensive patients with focal renal artery fibromuscular dysplasia

Hypertension Research volume 46, pages 1407–1416 (2023)Cite this article

Abstract

To date, few study has defined the exact role or utility of intravascular ultrasound (IVUS) in the diagnosis and treatment of renal artery fibromuscular dysplasia (FMD). We investigated whether using an IVUS would provide additional insights in the hypertensive patients with focal renal artery FMD. A prospective, observational study, including all patients with focal renal artery FMD admitted to the Ruijin hospital during 6 consecutive years (2015–2021). Based on IVUS imaging, focal FMD patients were classified as two subtypes: intima-media thickening (IMT) and negative remodeling (NR) of the whole vessel. A total of 36 consecutive patients (24 ± 7, 13–39 years) with focal renal artery FMD were enrolled. Angiographic unifocal type was present in 22 (61.1%) patients and tubular type was present in 14 (38.9%) patients. Among 22 patients with unifocal, IVUS showed that 18 (81.8%) had IMT and 4 (18.2%) had NR. 14 patients with tubular, IVUS showed 3 (21.4%) had IMT and 11 (78.6%) had NR. No difference in age of onset, gender, BMI, initial BP levels were found between IMT and NR subtypes. However, hypertension cure rates of short-term (48 h after angioplasty) (76.2% vs. 26.7%, p = 0.004) and long-term (1–6years) (90.5% vs. 20.0%, p < 0.001) were higher in patients with IMT than in those with NR subtype. In present study, we described a new classification of focal renal artery FMD into IMT or NR subtype based on IVUS. Renal FMD Patients with IMT subtype were more likely to achieve cure of hypertension.

We investigated whether using an IVUS would provide additional insights in the hypertensive patients with focal renal artery FMD. A new classification of focal renal artery FMD into IMT or NR subtype based on IVUS was described. Renal FMD Patients with IMT subtype were more likely to achieve cure of hypertension.

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Funding

Funding

This study was supported by National Natural Science Foundation of China [81800339, 81900440, 81901496]; Natural Science Foundation of Shanghai Science and Technology Committee [18ZR1431800, 21ZR1454100]; Fund of Shanghai Municipal Commission of Health and Family Planning [201940413, 20194Y0171, 20204Y0007].

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  1. These authors contributed equally: Yuanyuan Kang, Qihong Wu

Authors and Affiliations

  1. Department of Hypertension, Shanghai Institute of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China

    Yuanyuan Kang, Qihong Wu, Jianzhong Xu, Mona Hong, Yu Ma, Xiaofeng Tang, Limin Zhu, Pingjin Gao & Jiguang Wang

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Correspondence to Jianzhong Xu.

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Kang, Y., Wu, Q., Xu, J. et al. Intravascular ultrasound provides additional insights in the hypertensive patients with focal renal artery fibromuscular dysplasia. Hypertens Res 46, 1407–1416 (2023). https://doi.org/10.1038/s41440-023-01216-y

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