1Department of Clinical Laboratory, Kindai University Hospital, 2Department of Clinical Engineering, Kindai University Hospital, 3Department of Nephrology, Kindai University Hospital, 4Department of Endocrinology and Metabolism·Diabetes Medicine, Kindai University Hospital, 5Department of Clinical Laboratory, Kindai University Nara Hospital
The possibility of estimating the culprit lesion on the basis of the radial artery resistance index (RI) was investigated in 38 subjects who underwent ultrasound-guided vascular access during the period from January 2014 to April 2017, and who had a brachial artery RI of >=0.60. Ten out of 11 patients with radial artery RI of >=0.60 exhibited occlusion due to stricture with a lumen of less than 1.5 mm near the arteriovenous fistula (AVF) anastomosis. Fourteen out of 27 patients with a radial artery RI of <0.60 exhibited occlusion due to stricture with a lumen of <=1.5 mm away from the anastomosis site, and in nine cases there was no stricture with a lumen of <=1.5 mm. Based on the present study, we believe that it is possible to estimate and examine abnormal findings (location) by verifying RI in both the brachial and radial arteries by ultrasound-guided vascular access.