Papers
8
Total Citations
51
H-Index
5
About
Dr. Yudai Ishiyama is a leading urologic surgeon and researcher whose work centers on optimizing surgical outcomes in robot-assisted kidney and bladder cancer surgery. His major contributions focus on understanding and mitigating renal injury during partial and radical nephrectomy. He has critically re-evaluated the traditional “warm ischemic time” threshold, demonstrating in a multi-institutional study of over 1,100 patients that extended ischemia may have a limited impact on renal function in the robotic era—a finding that challenges long-held surgical dogma. Dr. Ishiyama also pioneered a new longitudinal component to the RENAL nephrometry score to better predict operative complexity in transperitoneal robot-assisted partial nephrectomy. His research further shows that tumor enucleation techniques offer greater renal function benefits for complex tumors, and he has investigated the association between ureteral clamping time and acute kidney injury during radical cystectomy. With multiple papers accumulating 7–11 citations each, his work is shaping best practices in nephron-sparing surgery. Notably, he has also reported on the feasibility of these advanced robotic procedures in octogenarians and kidney transplant recipients, expanding the boundaries of minimally invasive urologic oncology.
Research Focus
Key Achievements
Top Papers
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