Nephrectomy
Conditions
Brief summary
The purpose of the study is to evaluate patient-specific surgical simulation by permitting pre-operative rehearsals, in the form of the surgeon completing a dry run of the procedure on a model constructed from the patient's radiological studies that replicates every aspect of their organs. The investigators' aim is to evaluate the effectiveness of this form of practice in optimizing intraoperative and postoperative outcomes . The investigators hope eventually to use these rehearsals as a standard study tool for surgical training.
Interventions
OTHERPhysical reality simulation
Using 3-D printing and polymer technology, the investigators will construct patient specific simulated hydrogel models designed from patients' imaging, incorporating the necessary anatomy, physiology and pathology specific to each patient. These models are constructed at the Laboratory for Simulation-based Translational Research at the Department of Urology. Group 1 urologists will rehearse the minimally-invasive partial nephrectomy (MIPN) surgery using these patient-specific models.
The DaVinci surgical skills simulator system uses a virtual reality surgical simulation platform that encompasses a variety of basic exercises specifically designed to give users the opportunity to improve their proficiency with the da Vinci surgeon console controls and basic robotic surgical skills. All urologists have already completed a basic robotic skills curriculum. Group 2 urologists will complete a refresher module on the virtual reality simulator.
Sponsors
University of Rochester
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* All patients scheduled to undergo MIPN surgery at the University of Rochester Medical Center * Ability to give informed consent * Willing to participate in the study * Any racial or ethnic origin
Exclusion criteria
* Inability to give informed consent
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Operative time measured during minimal invasive partial nephrectomy surgery | At the end of each surgical procedure, approximately 24 hours after surgery | Operative time is reported on completion of minimal invasive partial |
| Estimated blood loss measured during minimal invasive partial nephrectomy surgery | At the end of each surgical procedure, approximately 24 hours after surgery | Estimated blood loss is reported on completion of minimal invasive partial nephrectomy surgery, it is estimated by the volume of fluid in the suction irrigation at the end of surgery and measured in ml as a continuous variable. |
| Change in postoperative renal functions | Zero at date of randomization and serial measurements at 12 hours , 1 day and 30 days after surgery | The difference between preoperative (within a week prior to surgery) and postoperative (12 hours , 1 day and 30 days after surgery) using estimated GFR measured through serum creatinine blood test. |
| Surgical complications | From date of surgery up to 30 days postoperative, every complication encountered during that time will be recorded | Intraoperative and postoperative complications will be measured and reported using the modified Clavien-Dindo classification of surgical complications (Grade 1 to 5). |
| Objective evaluation of surgical performance | At the end of each surgical procedure, approximately 24 hours after surgery | All surgical cases will be recorded and reviewed by a third party online tool that specializes in evaluation of surgical performance using the GEARS (Global Evaluative Assessment of Robotic Skills) tool |
| Warm ischemia time measured during minimal invasive partial nephrectomy surgery | At the end of each surgical procedure, approximately 24 hours after surgery | Warm ischemia time is reported on completion of minimal invasive partial nephrectomy surgery, the metric will be measured in minutes as a continuous variable. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in the volume of ratio of red blood cells to total blood volume (HCT) | Zero at date of randomization and serial measurements at 12 and 24 hours after surgery | The difference between preoperative (within a week prior to surgery) and postoperative (12 and 24 hours after surgery) using the blood test HCT. |
| Hospital stay | From date of admission up to 30 days after surgery | The length of hospital stay will be measured from time of admission to day of discharge and will be reported in days |
| Hospital readmission | From date of surgery up to 30 days postoperative, every hospital readmission encountered during that time will be recorded | The readmission rates of patients enrolled in the study will be measured and reported in number of patients |
| Positive margins of the tumor specimen | From date of randomization up to 10 days after surgery | On pathological examination the presence or absence (+/-) and length in millimeters (mm) will be measured |
Countries
United States
Outcome results
None listed