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- W4377223602 abstract "Venodilation following anesthesia for arteriovenous fistula (AVF) creation may alter a preoperative surgical plan based upon elective vein mapping. This study evaluates the effect of changed plans on AVF maturation and functional patency. All outpatient AVFs constructed in 2016 to 2019 were retrospectively reviewed. All patients had ultrasound by surgeon intraoperatively. Patients were excluded if there was no preoperative vein mapping or documented preoperative surgical plan. Patients were divided into two groups: AVF conducted as planned or the preoperative plan was altered after the intraoperative mapping, resulting in a more preferred AV access. Primary outcomes were maturation and functional patency. We included 245 patients, with 176 patients (72%) experiencing no change and 69 patients (28%) with a positive change. Median follow-up time was 39 months. Demographics and comorbidities did not differ between the two groups. There was positive change in 44%/53%/6% of the general/regional/local anesthesia groups (n = 69). In those with positive change, 42 (61%) received an AVF instead of a graft, 15 (22%) received cephalic AVF instead of basilic AVF, and 12 (17%) received forearm instead of upper arm cephalic AVF. Maturation rate was 89% (157/176) in those with no change and 70% (49/69) following positive change (P < .001). Mean maturation time was shorter in the no change group (61 vs 79 days; P = .051). Functional patency for matured AVFs did not differ between the no change and positive change groups (P = .408) (Fig 1). In those with positive change, mean preoperative vein size was 2.0 mm, and did not differ between those which matured and failed (P = .860). Factors associated with lower maturation rate in patients with a positive change were use of regional anesthesia (P = .021) and creation of a brachiocephalic (P = .026) or radiocephalic AVF (P = .006) (Fig 2), while general anesthesia (P = .601) and brachiobasilic AVF creation (P = .239) were not associated with lower maturation. Intraoperative vein mapping results in a high rate of change in surgical plan not supported by preoperative vein mapping. Accesses created as a result of these changes have acceptable maturation and excellent patency. These data demonstrate that preoperative vein mapping misses significant opportunity for AVF creation that is apparent only with intraoperative ultrasound. Effort for intraoperative surgeon-performed vein mapping with ultrasound should be added to RVU assignment for AV access creation codes.Fig 2Maturation rate by change in operative plan, anesthesia modality, and fistula type. Br, basilic, brachiobasilic; Br-Br, brachiobrachial; Br-Ceph, brachiocephalic; Rad-Ceph, radiocephalic.View Large Image Figure ViewerDownload Hi-res image Download (PPT)" @default.
- W4377223602 created "2023-05-23" @default.
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- W4377223602 date "2023-06-01" @default.
- W4377223602 modified "2023-10-16" @default.
- W4377223602 title "Intraoperative Ultrasound Results in High Rate of Change in Surgical Plan, Yielding More Favorable Access Creation Not Predicted by Preoperative Vein Mapping" @default.
- W4377223602 doi "https://doi.org/10.1016/j.jvs.2023.03.435" @default.
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