Nephrectomy / Methods

The goal of this observational study is to learn whether warming patients before surgery, called "prewarming," affects blood lactate levels (a marker of how well tissues are getting oxygen) and recovery in adults having planned (elective) kidney removal surgery (nephrectomy). The main questions this study aims to answer are: * Does prewarming lower the rise in blood lactate seen during and after surgery? * Does prewarming affect time spent in the intensive care unit (ICU), the need for a blood transfusion, or the rate of complications after surgery? Researchers will compare two groups of adults having this surgery. One group receives brief active warming before anesthesia (the "prewarming" group). The other group does not receive this warming (the "control" group). The anesthesia team decides whether to use prewarming and for how long, as part of routine care; the study does not change this decision. Researchers will compare the two groups to see whether prewarming is linked to lower lactate levels and better recovery. Participants will: * Receive their usual, routine surgery and anesthesia care * Have blood pressure, heart rate, body temperature, and blood tests, including lactate, checked before and after surgery, as already done in routine care * Have their ICU stay, need for blood transfusion, and any complications recorded This study does not add any extra tests, procedures, or blood draws beyond routine clinical care.

The purpose of the study is to evaluate the efficacy of R.E.C.K (ropivacaine epinephrine clonidine ketorolac) vs Exparel during robotic partial and radical nephrectomy in a single institution, prospective, randomized trial. The study will evaluate post operative Numerical Rating Score (NRS) pain scores, post operative pain medication intake (opioids and over-the-counter pain medicines) and length of stay across the two patient cohorts. The findings will help to inform whether the increased cost of Exparel when compared to R.E.C.K is justified.

It is a prospective, randomized, controlled and superiority clinical trial, with the objective of comparing the effectiveness of multimodal anesthesia versus conventional anesthesia in patients undergoing oncological robotic nephrectomy within a short-stay surgery program (SSA). The effect of no specific drug will be evaluated, but rather the anesthetic approach ologies of surgical patients. The clinical trial will be carried out in a third-level university hospital, between the first half of 2026 and the second half of 2027 and, after approval by the corresponding Clinical Research Ethics Committee.

The goal of this clinical trial is to learn the evidence-based medical value of 3D visualization techniques to improve tumor control, preservation of renal function, and perioperative safety in robot-assisted nephron sparing surgery for complex renal tumors. The main question it aims to answer is: Is 3D visualization techniques more effective in improving robot-assisted nephron sparing surgery for complex renal tumors in terms of tumor control, renal function preservation, and perioperative safety. The researchers will randomize participants into a 3D trial group and a conventional group for comparison. Participants will: Complete Blood routine, liver and kidney function tests on the first and third day after operation. Have Renography at 3 and 12 months after the operation. Cooperate with follow-up visits.