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  • Title: Factors associated with a tunneled dialysis catheter in place at initial arteriovenous access creation.
    Author: Ryan TJ, Farber A, Cheng TW, Raulli SJ, Sather K, Dicken QG, Levin SR, Zhang Y, Siracuse JJ.
    Journal: J Vasc Surg; 2021 May; 73(5):1771-1777. PubMed ID: 33068763.
    Abstract:
    OBJECTIVE: Arteriovenous (AV) access is the preferred hemodialysis modality to avoid the complications associated with tunneled dialysis catheters (TDCs). Despite efforts to create timely AV access, many patients still initiate hemodialysis through TDCs. Our goal was to determine the patient factors associated with having a TDC present at initial AV access creation and how this affects survival. METHODS: We performed a single-center, retrospective review of all patients who had undergone initial AV fistula creation from 2014 to 2019. Patients with previous peritoneal or AV access were excluded. Univariable and multivariable analyses were used to identify associations with a TDC present at initial AV access creation and patient survival. RESULTS: Of 509 patients who had undergone initial AV access creation, a TDC was present in 280 (55%). The mean patient age was 59.7 ± 14.1 years. The access types were brachiocephalic (47.2%), brachiobasilic (22.4%), radiocephalic (15.5%), and prosthetic (12.6%). The patients with a TDC compared with those without a TDC were less likely to be obese (68.9% vs 54.2%), more likely to be homeless (10.4% vs 4.8%), and more likely to be an inpatient (44.6% vs 18.8%). They were less likely to have seen a primary care physician within 1 year preoperatively (54.3% vs 88.6%) and a nephrologist within 3 months preoperatively (39.3% vs 93%; P < .05 for all). On multivariable analysis, the presence of a TDC at initial AV access creation was associated with no nephrology visit within 3 months preoperatively (odds ratio [OR], 25; 95% confidence interval [CI], 12.5-50; P < .001), homeless status (OR, 2.6; 95% CI, 1.1-6.2; P = .03), and the absence of obesity (OR, 1.8; 95% CI, 1.1-2.9; P = .02). The 1-year survival was similar for patients with (95%) and without (94.8%) a TDC (P = .36) as confirmed by multivariable analysis (hazard ratio, 1.2; 95% CI, 0.65-2.1; P = .63). CONCLUSIONS: The absence of a preoperative nephrology visit, homeless status, and the absence of obesity were associated with a TDC present at initial AV access creation. However, the presence of a TDC did not appear to confer changes in short-term survival. Targeted improvements in high-risk populations such as increasing the frequency of preoperative subspecialty evaluation might be warranted to reduce TDC placement before AV access creation at urban safety-net hospitals.
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