Efficacy and Safety of Tadalafil 5 mg Once Daily for the Treatment of Erectile Dysfunction After Robot-Assisted Laparoscopic Radical Prostatectomy: A 2-Year Follow-Up

Background: Although nerve-sparing robot-assisted radical prostatectomy (NS-RALP) is performed, a large number of patients still experience erectile dysfunction (ED) after surgery. Aim: To evaluate the efficacy and safety of tadalafil 5 mg once daily (OaD) in ED treatment over 2 years and investigate the cause of vascular ED after NS-RARP. Methods: We retrospectively evaluated 95 men who underwent NS-RARP and had a penile rehabilitation treatment with tadalafil 5 mg OaD. They were classified into 3 groups: tadalafil 5 mg OaD for 2 years (group I), tadalafil 5 mg OaD for 1 year (group II), and no tadalafil (group III). All patients in group I underwent penile color duplex ultrasound to evaluate the cause of vascular ED. Outcomes: Patients were surveyed using the abridged 5-item International Index of Erectile Function (IIEF-5). Results: Statistically significant improvements were observed in group I for all IIEF-5 domain scores (P = .000). There was no statistically significant difference in recovery of erectile function (EF) the 2-year follow-up between groups I and II. Sub-analysis based on NS status showed no difference in recovery of EF. However, group I showed better trends in EF improvement. Those with venogenic ED had poor responses compared with those with arteriogenic ED or unremarkable findings with tadalafil 5-mg OaD treatment (14.2% vs 55.0% vs 53.3%). The overall side effects included hot flushing in 9.5%, headache in 7.1%, and dizziness in 2.3% of patients. Clinical Implications: Long-term usage of tadalafil 5 mg OaD after RARP can be an effective option for penile rehabilitation. Strengths and Limitations: The present study is a retrospective study with a relatively small sample. Conclusions: Although the responses of patients with venogenic ED were limited compared with those with arteriogenic ED, tadalafil 5-mg OaD treatment was well tolerated and significantly improved EF up to 2 years after NS-RARP.Kim S, Sung GT. Efficacy and Safety of Tadalafil 5 mg Once Daily for the Treatment of Erectile Dysfunction After Robot-Assisted Laparoscopic Radical Prostatectomy: A 2-Year Follow-Up. Sex Med 2018;6:108–114. Key Words: Erectile Dysfunction, Penile Rehabilitation, Phosphodiesterase Type 5 Inhibitor, Robot-Assisted Radical Prostatectom

Laparoendoscopic single-site surgery with the second-generation single port instrument delivery extended reach surgical system in a porcine model.

PurposeTo describe our initial experience with the second-generation Single Port Instrument Delivery Extended Reach (SPIDER) laparoendoscopic single-site surgical system in a porcine model.Materials and methodsIn four swine weighing approximately 32 to 35 kg, five nephrectomies, four adrenalectomies, three pyeloplasties, and three partial cystectomies and closures were performed by a single surgeon. The swine were placed in the lateral flank position under general anesthesia. The SPIDER surgical system was introduced through a single incision and the various urological procures were performed by use of flexible instrumentation.ResultsAll five nephrectomies, four adrenalectomies, three pyeloplasties, and three partial cystectomies and closures were performed successfully without additional skin incisions. The mean time to set up the SPIDER platform was 3.5 minutes. The mean operative time for the right and left nephrectomies was 45.4 minutes and 47.8 minutes, respectively. The mean operative time for the right and left adrenalectomies was 37.6 minutes and 35.4 minutes, respectively. The mean operative time for the pyeloplasties for one right and two left ureters was 45.6 minutes and 47.3 minutes, respectively. The mean operative time for the partial cystectomies and closures was 18.6 minutes. There were no noticeable intraoperative complications except for minimal urine leakage in the first pyeloplasty.ConclusionsIn this initial pilot evaluation, the second-generation SPIDER surgical system offered intuitive instrument maneuverability and restored triangulation. However, retraction was challenging because of the lack of strength and the limited ability for precise manipulation of the tip. Future refinements of the technology and prospective studies are needed to optimize the application of this technology in urology

Laparoendoscopic single-site surgery with the second-generation single port instrument delivery extended reach surgical system in a porcine model.

PurposeTo describe our initial experience with the second-generation Single Port Instrument Delivery Extended Reach (SPIDER) laparoendoscopic single-site surgical system in a porcine model.Materials and methodsIn four swine weighing approximately 32 to 35 kg, five nephrectomies, four adrenalectomies, three pyeloplasties, and three partial cystectomies and closures were performed by a single surgeon. The swine were placed in the lateral flank position under general anesthesia. The SPIDER surgical system was introduced through a single incision and the various urological procures were performed by use of flexible instrumentation.ResultsAll five nephrectomies, four adrenalectomies, three pyeloplasties, and three partial cystectomies and closures were performed successfully without additional skin incisions. The mean time to set up the SPIDER platform was 3.5 minutes. The mean operative time for the right and left nephrectomies was 45.4 minutes and 47.8 minutes, respectively. The mean operative time for the right and left adrenalectomies was 37.6 minutes and 35.4 minutes, respectively. The mean operative time for the pyeloplasties for one right and two left ureters was 45.6 minutes and 47.3 minutes, respectively. The mean operative time for the partial cystectomies and closures was 18.6 minutes. There were no noticeable intraoperative complications except for minimal urine leakage in the first pyeloplasty.ConclusionsIn this initial pilot evaluation, the second-generation SPIDER surgical system offered intuitive instrument maneuverability and restored triangulation. However, retraction was challenging because of the lack of strength and the limited ability for precise manipulation of the tip. Future refinements of the technology and prospective studies are needed to optimize the application of this technology in urology