{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T15:15:54Z","timestamp":1782918954964,"version":"3.54.5"},"reference-count":36,"publisher":"S. Karger AG","issue":"2","license":[{"start":{"date-parts":[[2018,1,1]],"date-time":"2018-01-01T00:00:00Z","timestamp":1514764800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"},{"start":{"date-parts":[[2018,1,1]],"date-time":"2018-01-01T00:00:00Z","timestamp":1514764800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Blood Purif"],"published-print":{"date-parts":[[2018]]},"abstract":"<jats:p>&lt;b&gt;&lt;i&gt;Background:&lt;\/i&gt;&lt;\/b&gt; The definition of significant stenosis (SS) remains controversial. &lt;b&gt;&lt;i&gt;Methods:&lt;\/i&gt;&lt;\/b&gt; We retrospectively reviewed 1,040 consultations. SS was defined in the presence of clinical and echo-Doppler (DDU) criteria: Qa &amp;#x3c;500 mL\/min or Qa decrease &amp;#x3e;25%; RI &amp;#x3e;0.7 in the feeding artery or absolute minimal luminal stenosis diameter &amp;#x3c;2.0 mm. Stenosis without any additional criteria were considered borderline stenosis (BS). &lt;b&gt;&lt;i&gt;Results:&lt;\/i&gt;&lt;\/b&gt; Two hundred twenty-one arteriovenous fistulas (AVFs) were included: 58.8% had SS, 18.6% had BS, and 22.6% had no dysfunctional access (ND). SS had a significantly higher thrombotic events than BS and ND (13.1 vs. 4.4%, &lt;i&gt;p\u00a0&lt;\/i&gt;= 0.018). The annual thrombosis rate was 0.007, 0.037, and 0.004 in the ND, SS, and BS, respectively. AVF cumulative survival at 5 years was significantly lower in SS (89.5%) compared to BS (100%) and ND (97.4%; &lt;i&gt;p&lt;\/i&gt; = 0.03). BS had an HR for AVF failure of 1.1, &lt;i&gt;p&lt;\/i&gt; = 0.955, while the SS presented an HR of 5.9, &lt;i&gt;p&lt;\/i&gt; = 0.09. &lt;b&gt;&lt;i&gt;Conclusion:&lt;\/i&gt;&lt;\/b&gt; AVF clinical monitoring with additional DDU criteria appear to be appropriate for therapeutic referral.<\/jats:p>","DOI":"10.1159\/000488442","type":"journal-article","created":{"date-parts":[[2018,4,19]],"date-time":"2018-04-19T21:01:53Z","timestamp":1524171713000},"page":"94-102","source":"Crossref","is-referenced-by-count":7,"title":["The Role of Doppler Ultrassonography in Significant and Borderline Stenosis 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