EFFECTS OF CENTRAL VENOUS STENOSIS ON FLOW VOLUME (FV) AND RESISTIVE INDEX (RI) OF A FUNCTIONING VASCULAR ACCESS, RETROSPECTIVE STUDY

E-Poster

https://storage.unitedwebnetwork.com/files/1099/6191cc04fbeb2f1d33ced86f98e3ea31.pdf

Abstract Title

First Name *

Hassan

Last Name *

Foula

Co-author 1

Masayuki Itakura itakura-gazo@outlook.jp Kaikoukai Central Clinic Vascular Access Treatment Center Nagoya

Co-author 2

Naofumi Miwa n-miwa@kaikou.or.jp Kaikoukai Central Clinic Vascular Access Treatment Center Nagoya

Co-author 3

Keisuke Momohara cen-gazo@kaikou.or.jp Kaikoukai Central Clinic Vascular Access Treatment Center Nagoya

Co-author 4

Hiroshi Sakurai hrsakurai@kaikou.or.jp Kaikoukai Central Clinic Vascular Access Treatment Center Nagoya

Co-author 5

Mohamed Essam m_elrgal@hotmail.com Kidney and Urology Center Nephrology Department Alexandria

Co-author 6

Mennah Magdy drmennahmagdy@hotmail.com Kidney and Urology Center Nephrology Department Alexandria

Co-author 7

Mohamed Foula msfoula@iau.edu.sa Imam Abdulrahman Bin Faisal University Surgery Dammam

Co-author 8

Kentarou Okubo o9boken@gmail.com Kaikoukai Central Clinic Vascular Access Treatment Center Nagoya

Co-author 9

Takeshi Onogi t-onogi@kaikou.or.jp Kaikoukai Central Clinic Vascular Access Treatment Center Nagoya

Co-author 10

Masato Tsuboi m-tsuboi@kaikou.or.jp Kaikoukai Central Clinic Vascular Access Treatment Center Nagoya

Co-author 11

Takashi Sato t-sato@kaikou.or.jp Kaikoukai Central Clinic Vascular Access Treatment Center Nagoya

Co-author 12

Co-author 13

Co-author 14

Co-author 15

Introduction

Central venous stenosis (CVS) is a common overlooked complication of VA as its diagnosis is challenging. Moreover, its effect on the flow volume (FV) and the peripheral resistive index (RI) was not well discussed before. Despite the availability of doppler ultrasound (DUS) in most centers, direct visualization of central veins using DUS is quite difficult. Aim: To evaluate the effects of CVS on FV and RI of the feeding artery of VA by DUS in Hpatients who are indicated for interventional therapy.

Methods

Retrospective cohort study, data of 485 percutaneous transluminal angiography procedures (PTA), performed in 95 patients during the period from January 2014 to September 2022, were collected. DUS measurements of FV and RI before and after PTA in the patients with isolated CVS were compared to those with mixed CVS and peripheral stenosis (MVS).

Results

FV and RI were significantly affected in the patients with mixed stenosis than patients with isolated CVS. After PTA, both FV and RI were significantly improved. The improvement rate of FV and RI after PTA were significantly higher in patients with mixed stenosis than patients with isolated CVS.

Conclusions

CVS can affect FV and RI of the VA feeding artery, however no cut-off value could be identified. FV and RI are less improved in patients with CVS compared to patients with MVS. Clinical assessment as well as serial measurement of FV and RI could be used to detect the improvement of CVS after successful PTA and for follow up surveillance as well.

The content of this abstract was introduced at the African Nephrology and Transplantation Summit. Resubmitting is permitted.

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