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Artery to vein configuration of arteriovenous fistula improves hemodynamics to increase maturation and patency.
Science Translational Medicine ( IF 17.1 ) Pub Date : 2020-08-19 , DOI: 10.1126/scitranslmed.aax7613
Hualong Bai 1, 2, 3 , Nirvana Sadaghianloo 4, 5 , Jolanta Gorecka 1, 2 , Shirley Liu 1, 2 , Shun Ono 1 , Abhay B Ramachandra 6 , Sophie Bonnet 5 , Nathalie M Mazure 4 , Serge Declemy 5 , Jay D Humphrey 1, 6 , Alan Dardik 1, 2, 7, 8
Affiliation  

Arteriovenous fistulae (AVF) are the preferred mode of hemodialysis access, but 60% of conventional [vein-to-artery (V-A)] AVF fail to mature, and only 50% remain patent at 1 year. We previously showed improved maturation and patency in a pilot study of the radial artery deviation and reimplantation (RADAR) technique that uses an artery-to-vein (A-V) configuration. Here, we show that RADAR exhibits higher rates of maturation, as well as increased primary and secondary long-term patencies. RADAR is also protective in female patients, where it is associated with decreased reintervention rates and improved secondary patency. RADAR and conventional geometries were compared further in a rat bilateral carotid artery-internal jugular vein fistula model. There was decreased cell proliferation and neointimal hyperplasia in the A-V configuration in male and female animals, but no difference in hypoxia between the A-V and V-A configurations. Similar trends were seen in uremic male rats. The A-V configuration also associated with increased peak systolic velocity and expression of Kruppel-like factor 2 and phosphorylated endothelial nitric oxide synthase, consistent with improved hemodynamics. Computed tomography and ultrasound-informed computational modeling showed different hemodynamics in the A-V and V-A configurations, and improving the hemodynamics in the V-A configuration was protective against neointimal hyperplasia. These findings collectively demonstrate that RADAR is a durable surgical option for patients requiring radial-cephalic AVF for hemodialysis access.



中文翻译:

动静脉瘘的动脉到静脉构造改善了血流动力学,从而增加了成熟度和通畅性。

动静脉瘘(AVF)是血液透析通路的首选方式,但是60%的常规[静脉-动脉(VA)] AVF无法成熟,只有50%的患者在1年时仍获得专利。我们先前在uses动脉偏移和再植入(RADAR)技术的前期研究中显示了成熟度和通畅性的提高,该技术使用了动脉到静脉(AV)的配置。在这里,我们显示RADAR表现出更高的成熟率,以及增加的一级和二级长期通畅性。RADAR在女性患者中也具有保护作用,这与降低再干预率和改善二次通畅有关。在大鼠双侧颈动脉-颈内静脉瘘模型中进一步比较了RADAR和常规几何形状。在雄性和雌性动物的AV构型中,细胞增殖和新内膜增生减少,但是在AV构型和VA构型之间的缺氧没有差异。在尿毒症雄性大鼠中也观察到了类似的趋势。房室配置还与增加的峰值收缩速度和Kruppel样因子2和磷酸化内皮型一氧化氮合酶的表达有关,与改善的血液动力学一致。计算机断层扫描和超声告知的计算模型显示,AV和VA构型具有不同的血液动力学,改善VA构型的血液动力学可防止新内膜增生。这些发现共同表明,RADAR是需要radial骨头型AVF进行血液透析的患者的持久手术选择。但AV和VA配置之间的缺氧没有差异。在尿毒症雄性大鼠中也观察到了类似的趋势。房室配置还与增加的峰值收缩速度和Kruppel样因子2和磷酸化内皮型一氧化氮合酶的表达有关,与改善的血液动力学一致。计算机断层扫描和超声告知的计算模型显示,AV和VA构型具有不同的血液动力学,改善VA构型的血液动力学可防止新内膜增生。这些发现共同表明,RADAR是需要radial骨头型AVF进行血液透析的患者的持久手术选择。但AV和VA配置之间的缺氧没有差异。在尿毒症雄性大鼠中也观察到了类似的趋势。房室配置还与增加的峰值收缩速度和Kruppel样因子2和磷酸化内皮型一氧化氮合酶的表达有关,与改善的血液动力学一致。计算机断层扫描和超声告知的计算模型显示,AV和VA构型具有不同的血液动力学,改善VA构型的血液动力学可防止新内膜增生。这些发现共同表明,RADAR是需要radial骨头型AVF进行血液透析的患者的持久手术选择。房室配置还与增加的峰值收缩速度和Kruppel样因子2和磷酸化内皮型一氧化氮合酶的表达有关,与改善的血液动力学一致。计算机断层扫描和超声告知的计算模型显示,AV和VA构型具有不同的血液动力学,改善VA构型的血液动力学可防止新内膜增生。这些发现共同表明,RADAR是需要radial骨头型AVF进行血液透析的患者的持久手术选择。房室配置还与增加的峰值收缩速度和Kruppel样因子2和磷酸化内皮型一氧化氮合酶的表达有关,与改善的血液动力学一致。计算机断层扫描和超声告知的计算模型显示,AV和VA构型具有不同的血液动力学,改善VA构型的血液动力学可防止新内膜增生。这些发现共同表明,RADAR是需要radial骨头型AVF进行血液透析的患者的持久手术选择。计算机断层扫描和超声告知的计算模型显示,AV和VA构型具有不同的血液动力学,改善VA构型的血液动力学可防止新内膜增生。这些发现共同表明,RADAR是需要radial骨头型AVF进行血液透析的患者的持久手术选择。计算机断层扫描和超声告知的计算模型显示,AV和VA构型具有不同的血液动力学,改善VA构型的血液动力学可防止新内膜增生。这些发现共同表明,RADAR是需要radial骨头型AVF进行血液透析的患者的持久手术选择。

更新日期:2020-08-20
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