Ultrasound-Guided Puncture Performed by Nursing Staff As a Strategy for the Temporary Preservation of a Brachio-Basilic Arteriovenous Fistula With Circumferential Mural Thrombosis in a Patient Undergoing High-Volume Online Hemodiafiltration: A Case Report. REV SEN 2026, 14 (3S), 71-72. https://doi.org/10.56867/.