Related Experiment Video
Updated: Feb 12, 2026

Retzius-Sparing Robot-Assisted Radical Prostatectomy
Published on: May 19, 2022
Transvesical robot-assisted simple prostatectomy with 360° circumferential reconstruction: step-by-step technique
Giovanni Cacciamani1,2, Luis Medina1, Akbar Ashrafi1
1USC Institute of Urology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
Objective:
To present the step-by-step technique of a 360° mucosal reconstruction after transvesical robot-assisted simple prostatectomy (RASP).
Patient And Methods:
We analysed the first 23 consecutive patients who underwent RASP using our 360° reconstruction between December 2015 and October 2017. After transperitoneal intravesical adenoma enucleation, a circumferential 360° reconstruction is performed. The first suture is placed at the 9 o'clock position and the edge of the urethra and bladder mucosa is approximated using 2-0 barbed suture. The reconstruction is continued counter-clockwise and the bladder mucosa is approximated to the urethra circumferentially.
Results:
The mean (sd) operating time was 160.6 (28.1) min and the estimated blood loss was 98.6 (99.8) mL. No patients required conversion to open surgery. No intra-operative or postoperative transfusions were needed. No intra-operative complications occurred. The mean (sd) length of hospital stay was 2.1 (0.6) days. One postoperative complication was reported (respiratory distress in a patient with chronic obstructive pulmonary disease, requiring intensive care unit admission).
Conclusion:
Our 360° reconstruction during RASP is feasible and safe. The aim of the technique is to minimize use of electrocautery and decrease the raw surface area on the prostate capsule. This technical modification could potentially lessen postoperative bleeding after RASP and therefore the need for continuous bladder irrigation. In addition, it could potentially lead to mitigation of burning and irritative postoperative symptoms. Longer follow-up and comparative studies of different RASP techniques are still needed.
Related Concept Videos
Rate-Determining Steps
In a multistep reaction mechanism, one of the elementary steps progresses significantly slower than the others. This slowest step is called the rate-limiting step (or rate-determining step). A reaction cannot proceed faster than its slowest step, and hence, the rate-determining step limits the overall reaction rate.
The concept of rate-determining step can be understood from the analogy of a 4-lane freeway with a short-stretch of traffic-bottleneck caused due to...
Steps in Outbreak Investigation
Steps in the Modeling Process
Attention is the first necessary component for observational learning. It involves focusing on what the model is doing and saying. For example, if you decide to take a drawing class to enhance your skills, you need to pay close attention to the instructor's words and hand movements. The characteristics of the model significantly...
Steps for Free-Body Diagram
To find the acceleration of the system, it is first necessary to calculate the net force on the system. In order to accomplish this, a free-body diagram can be created to...
Multi-Step Reactions
Energy-releasing Steps of Glycolysis
The first energy-releasing step—the 6th step of glycolysis...

