The impact of arteriovenous anastomosis length on fistula flow rate and potential cardiovascular issues is not well established. However, it is widely recognized that proximal fistulas create a significant hemodynamic load, increasing the risk of high-output cardiac failure. Literature indicates that the anastomosis size varies from 3 to 15 mm. Nonetheless, common practice favors 6–10 mm for distal anastomoses, while the length reduces to 4–6 mm when the brachial artery is involved in the elbow or upper arm fistulas. It is advisable to avoid larger arteriotomies to prevent or lessen cardiovascular complications, especially when patients are monitored with access flow assessments and echocardiography for early detection of issues. Considering the high prevalence of elderly patients with cardiovascular risk among incident hemodialysis patients, a more careful approach to managing flow in arteriovenous access is crucial. The anastomotic length should be customized based on the patient’s specific anatomical and physiological conditions, rather than applying a uniform standard.
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CARLO LOMONTE
Thierry Pourchez
Mario Meola
The Journal of Vascular Access
Scuola Superiore Sant'Anna
Clinique Ambroise Paré
Ospedale Generale Regionale Francesco Miulli
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LOMONTE et al. (Thu,) studied this question.
www.synapsesocial.com/papers/696c776ceb60fb80d1395a7d — DOI: https://doi.org/10.1177/11297298251403729