Evaluation of Hemostatic Agents in Partial Nephrectomy

Partial nephrectomy (PN) is the standard surgical treatment for localized renal tumors, providing oncologic efficacy comparable to radical nephrectomy while preserving renal function. Despite technological advances, hemorrhage and urinary leakage remain major perioperative challenges. Various hemostatic agents have been introduced to improve intraoperative hemostasis and collecting system closure, including gelatin-thrombin matrices (FloSeal®) and oxidized regenerated cellulose (Surgicel®). However, the true clinical value of these agents remains controversial due to limited high-quality evidence. This prospective, randomized, single-center trial was conducted at Ankara University Faculty of Medicine, Department of Urology. The study enrolled 150 patients with localized renal masses (clinical stage T1a-T1b) scheduled for partial nephrectomy between January 2023 and December 2024. Patients were randomized equally into three groups: Group A (suturing only), Group B (suturing with FloSeal®), and Group C (suturing with Surgicel®). All surgeries were performed by a single experienced urologic surgeon using open, laparoscopic, or robotic approaches according to tumor complexity and patient preference. The primary endpoints were the incidence of clinically significant postoperative hemorrhage requiring transfusion, urinary leakage/fistula, and oncologic safety assessed by positive surgical margins. Secondary outcomes included operative and ischemia times, estimated blood loss, postoperative renal function, and length of hospital stay. Statistical analyses included ANOVA, chi-square, logistic regression, and ROC curve analyses to identify predictors of perioperative complications and surgical margin positivity. This study provides prospective evidence that adjunctive hemostatic agents do not significantly reduce postoperative hemorrhage or urinary leakage rates and do not influence oncologic safety. Perioperative outcomes are mainly determined by tumor and surgical factors rather than the use of hemostatic materials.