Implants, mechanical devices, and vascular surgery for erectile dysfunction

Salvage procedures for infected penile implants: A comprehensive review and analysis of functional outcomes

BACKGROUND

The salvage procedure for infected penile implants (IPs) has been a subject of interest since its inception in the late 1980s, yet its widespread adoption remains limited. The aim of this study was to realize a systematic literature review to provide a comprehensive analysis of salvage techniques for IPs and assess their efficacy, specifically focusing on functional success.

METHODS

A systematic literature review was conducted using PubMed, employing Mesh terms related to penile prosthesis, penile implant, infection, and salvage procedures. Articles in French or English were considered for the final analysis, with exclusion of literature reviews.

RESULTS

Fifteen articles detailing various salvage techniques for IPs were identified. Mulcahy's initial technique was described in 1996, and consisted of complete removal of infected components, extensive lavage, and subsequent replacement with a similar implant. Success rates ranged from 80% to 100%, with emerging trends favoring the use of malleable implants during salvage. Unfortunately, functional data remained limited. When salvage penile prosthesis placement involved a malleable prosthesis, between 20% and 33% of patients underwent conversion to hydraulic prosthesis.

CONCLUSION

The salvage procedure for infected penile implants is a reliable method, with success rates surpassing 80%. The need for comparative studies assessing the type of implant used during salvage is required to tailor conservative management strategies for optimal patient outcomes. Finally, few data have been published regarding subsequent conversions from malleable penile implants to hydraulic penile implants after salvage.

Preoperative counseling for penile implant surgery: standardized approach in a high-volume center of excellence

Shared-decision making is crucial in today's society. Although penile prosthesis surgery has had significant improvements regarding technique and materials over the last few decades - with the highest satisfaction rate in erectile dysfunction treatment at present time -, dissatisfaction can occur because of bad preoperative counseling with the creation of unrealistic expectations. This paper includes a small narrative review regarding the most important preoperative variables to be discussed in the preoperative setting. Literature search was conducted in December 2023 using PubMed. Additionally, our own standardized flowchart for preoperative counseling was added. The most important aspects of preoperative counseling include a description of the pathophysiology of erectile dysfunction as well as alternative treatments. Information should be given about which implant categories exist. Additionally, some information about the procedure itself as well as the financial aspect should be communicated. The most frequent and most important complications should be illustrated. Last but not least, the patient's expectations should be evaluated. Our added standardized flowchart with figure acts as a practical guideline for professionals as well as for patients. Our standardized approach for preoperative counseling emphasizes reasonable postoperative expectations aiming for a well-informed patient with high postoperative satisfaction. Our general strategy is to underpromise and overdeliver.

Penoscrotal approach for inflatable penile prosthesis implant: why it should be preferred

INTRODUCTION

Inflatable penile prosthesis are the definitive treatment for erectile dysfunction. The two most used surgical approaches to position the implants are the penoscrotal and the infrapubic. Current trends showed that the penoscrotal approach is extensively preferred however, there is not conclusive evidence demonstrating the superiority of one technique over the other. The aim of this review is to summarize the scientific evidence available and to underline strengths and weaknesses of the two techniques.

EVIDENCE ACQUISITION

We conducted a comprehensive search of MEDLINE, Cochrane Library, and National Center for Biotechnology Information PubMed to identify relevant published articles. The included studies had to explicitly examine the use of three-piece inflatable penile prosthesis with a focus on the surgical access method and complications.

EVIDENCE SYNTHESIS

Twenty-six articles were included in the review: seven narrative reviews, five retrospective observational studies, five prospective observational studies, and nine mixed methodology studies. The most frequent approach was the penoscrotal, which was also found more comfortable (RG1) by the operators in one study. The infrapubic approach lasts less and one study demonstrated higher satisfaction by the patients.

CONCLUSIONS

There is no evidence of significant differences in complications among the penoscrotal and infrapubic approaches. While the infrapubic approach is faster and patients were more satisfied, the penoscrotal approach is the most used by far. This is likely related to the more straightforward procedure through this access and the excellent surgical field exposure. For these reasons, it is also preferred in the most complex cases.

Complications and troubleshooting in primary penile prosthetic surgery-a review

Penile implant surgery is the gold standard to treat erectile dysfunction with success rates of over 90%. The first penile implants were developed in the early 1900s. Since then, several types of implants have been developed including malleable implants, two-piece inflatable implants, and three-piece inflatable implants. The three-piece inflatable penile prosthesis, which was introduced in 1973, is the most widely used type of penile implant in the United States. Penile implant surgery has undergone numerous advancements over the years, improving outcomes and patient satisfaction. However, as with any surgical procedure, there are risks and complications associated with penile implant surgery. It is important for surgeons to understand these potential complications and to have strategies in place to manage and prevent them to achieve the best possible outcomes for their patients.

Penile implants in low flow priapism

Priapism is a persistent or prolonged erection, in the absence of sexual stimulation, that fails to subside. Prolonged ischaemic or low flow priapism is defined as a full or partial erection persisting for more than 4 h and unrelated to sexual interest or stimulation, characterised by little or no cavernous blood flow. Low flow priapism leads to progressive corporal fibrosis, which could, in turn, lead to long-lasting erectile dysfunction if left untreated. Penile prosthesis implantation is recognised as a management option in refractory and delayed low flow priapism for restoring erectile function with high patient satisfaction rates. However, the ensuing corporal fibrotic scarring poses a surgical challenge to clinicians, given the higher complication rates in this patient subset. Postoperative patient satisfaction has been closely linked to preoperative expectations and perceived loss of penile length. Therefore, thorough patient counselling concerning the risk and benefits of penile implants should be a priority for all clinicians. Moreover, there is a lack of consensus on the ideal prosthesis choice and procedural timing in refractory low flow priapism. In this review, we will examine the existing literature on penile implants in patients with priapism and discuss the options for managing complications associated with penile prosthesis surgery.

Comparison of patient-reported outcomes after penile prosthesis placement in men with and without Peyronie's disease

We evaluated outcomes in patients undergoing penile prothesis (PP) implantation for erectile dysfunction (ED) and concurrent Peyronie's Disease (PD). A clinician-developed survey to assess satisfaction was sent to 354 patients who underwent PP placement from 2012-2018 by a single-surgeon. Results were compared based on the presence or absence of concurrent PD. 79 patients completed the survey (response rate 22%), including 38 patients (48%) with concurrent ED and PD (ED/PD). Mean follow-up was 31 months (standard deviation 19). 87% felt their condition was "very much" or "much" improved. There was no significant difference in patient-reported overall satisfaction with their PP or satisfaction with current penile length/girth based on the presence or absence of PD. 87% of patients with PD were satisfied with their degree of penile straightening after PP plus or minus concurrent straightening maneuvers such as modeling, plication, or incision/grafting. Sub-group analyses were performed to evaluate outcomes in those with concurrent PD/ED who required plaque incision/grafting at the time of PP placement for more severe deformity (n = 19). 47% of these patients were dissatisfied with their current penile length, compared with only 16% of those patients with PD/ED who did not require grafting (p = 0.05). In conclusion, the presence of PD alone may not impact PP satisfaction, but patients with more severe baseline deformity who require incision/grafting may be less satisfied with outcomes including penile length.

Advances in physical diagnosis and treatment of male erectile dysfunction

Erectile dysfunction (ED) is the most common male sexual dysfunction by far and the prevalence is increasing year after year. As technology advances, a wide range of physical diagnosis tools and therapeutic approaches have been developed for ED. At present, typical diagnostic devices include erection basic parameter measuring instrument, erection hardness quantitative analysis system, hemodynamic testing equipment, nocturnal erection measuring instrument, nerve conduction testing equipment, etc. At present, the most commonly used treatment for ED is pharmacological therapy represented by phosphodiesterase five inhibitors (PDE5i). As a first-line drug in clinical, PDE5i has outstanding clinical effects, but there are still some problems that deserve the attention of researchers, such as cost issues and some side effects, like visual disturbances, indigestion, myalgia, and back pain, as well as some non-response rates. Some patients have to consider alternative treatments. Moreover, the efficacy in some angiogenic EDs (diabetes and cardiovascular disease) has not met expectations, so there is still a need to continuously develop new methods that can improve hemodynamics. While drug have now been shown to be effective in treating ED, they only control symptoms and do not restore function in most cases. The increasing prevalence of ED also makes us more motivated to find safer, more effective, and simpler treatments. The exploration of relevant mechanisms can also serve as a springboard for the development of more clinically meaningful physiotherapy approaches. Therefore, people are currently devoted to studying the effects of physical therapy and physical therapy combined with drug therapy on ED. We reviewed the diagnosis of ED and related physical therapy methods, and explored the pathogenesis of ED. In our opinion, these treatment methods could help many ED patients recover fully or partially from ED within the next few decades.

An update on the current status and future prospects of erectile dysfunction following radical prostatectomy

BACKGROUND

Radical prostatectomy (RP) and radiation treatment are standard options for localized prostate cancer. Even though nerve-sparing techniques have been increasingly utilized in RP, erectile dysfunction (ED) due to neuropraxia remains a frequent complication. Erectile function recovery rates after RP remain unsatisfactory, and many men still suffer despite the availability of various therapies.

OBJECTIVE

This systematic review aims to summarize the current treatments for post-RP-ED, assess the underlying pathological mechanisms, and emphasize promising therapeutic strategies based on the evidence from basic research.

METHOD

Evaluation and review of articles on the relevant topic published between 2010 and 2021, which are indexed and listed in the PubMed database.

RESULTS

Phosphodiesterase type 5 inhibitors, intracavernosal and intraurethral injections, vacuum erection devices, pelvic muscle training, and surgical procedures are utilized for penile rehabilitation. Clinical trials evaluating the efficacy of erectogenic drugs in this setting are conflicting and far from being conclusive. The use of androgen deprivation therapy in certain scenarios after RP further exacerbates the already problematic situation and emphasizes the need for effective treatment strategies.

CONCLUSION

This article is a detailed overview focusing on the pathophysiology and mechanism of the nerve injury developed during RP and a compilation of various strategies to induce cavernous nerve regeneration to improve erectile function (EF). These strategies include stem cell therapy, gene therapy, growth factors, low-intensity extracorporeal shockwave therapy, immunophilins, and various pharmacological approaches that have induced improvements in EF in experimental models of cavernous nerve injury. Many of the mentioned strategies can improve EF following RP if transformed into clinically applicable safe, and effective techniques with reproducible outcomes.

Under-recognized factors affecting penile implant satisfaction in patients

INTRODUCTION

Surgical management via penile prosthesis is an option for patients who have failed medical management. There is a paucity of literature surrounding factors contributing to patient satisfaction after implant surgery. The objective of this study was to characterize patients' and surgeons' attitudes toward factors affecting satisfaction with this procedure.

METHODS

Two patient cohorts were identified and contacted via email: a medical management of erectile dysfunction (ED) cohort and a penile implant patient cohort. A third cohort, Canadian urologists who perform penile implant surgeries, was also contacted. The surveys consisted of 5-7 questions, including a rating question regarding the importance of various penile implant factors.

RESULTS

Forty-six ED patients, 45 post-implant patients, and 12 urologists completed the survey. The mean overall satisfaction on a 10-point scale was 6.49 (standard deviation [SD] 2.92). Most (67%) urologists selected patient satisfaction as one of their least favorite aspects of penile implant surgery. Compared to postimplant patients, ED patients reported greater importance in the areas of appearance (p=0.035), soft glans (p=0.040), and concealment of implant (p=0.007). Urologists ranked natural feel (p=0.019) and generating a discrete erection (p=0.022) as less important than patients.

CONCLUSIONS

This is the first study that examines which specific variables of penile implant surgery are associated with satisfaction while comparing surgeons' understanding of what patients desire from this surgery. This study identifies several factors deemed important by patients but under-recognized by urologists. This knowledge can aid urologists in optimizing preoperative counselling and improving patient satisfaction.

Aphrodisiac Performance of Bioactive Compounds from Mimosa pudica Linn.: In Silico Molecular Docking and Dynamics Simulation Approach

Plants and their derived molecules have been traditionally used to manage numerous pathological complications, including male erectile dysfunction (ED). Mimosa pudica Linn. commonly referred to as the touch-me-not plant, and its extract are important sources of new lead molecules in drug discovery research. The main goal of this study was to predict highly effective molecules from M. pudica Linn. for reaching and maintaining penile erection before and during sexual intercourse through in silico molecular docking and dynamics simulation tools. A total of 28 bioactive molecules were identified from this target plant through public repositories, and their chemical structures were drawn using Chemsketch software. Graph theoretical network principles were applied to identify the ideal target (phosphodiesterase type 5) and rebuild the network to visualize the responsible signaling genes, proteins, and enzymes. The 28 identified bioactive molecules were docked against the phosphodiesterase type 5 (PDE5) enzyme and compared with the standard PDE5 inhibitor (sildenafil). Pharmacokinetics (ADME), toxicity, and several physicochemical properties of bioactive molecules were assessed to confirm their drug-likeness property. Molecular dynamics (MD) simulation modeling was performed to investigate the stability of PDE5–ligand complexes. Four bioactive molecules (Bufadienolide (−12.30 kcal mol⁻¹), Stigmasterol (−11.40 kcal mol⁻¹), Isovitexin (−11.20 kcal mol⁻¹), and Apigetrin (−11.20 kcal mol⁻¹)) showed the top binding affinities with the PDE5 enzyme, much more powerful than the standard PDE5 inhibitor (−9.80 kcal mol⁻¹). The four top binding bioactive molecules were further validated for a stable binding affinity with the PDE5 enzyme and conformation during the MD simulation period as compared to the apoprotein and standard PDE5 inhibitor complexes. Further, the four top binding bioactive molecules demonstrated significant drug-likeness characteristics with lower toxicity profiles. According to the findings, the four top binding molecules may be used as potent and safe PDE5 inhibitors and could potentially be used in the treatment of ED.

The Augmenta Implant: A Cadaver Model of a Novel Anatomic Subdermal Implant for Cosmetic Penile Enhancement

INTRODUCTION

There are limited options for cosmetic penile enhancement and the correction of structural penile deformities.

AIM

We present the Augmenta, an innovative, technologically advanced subcutaneous elastomer-silicone cosmetic penile implant (CPI), as evaluated by objective structural changes in a cadaveric model.

METHODS

Five fresh male cadaver pelves were utilized in this preclinical setting. Placement of a subcutaneous elastomer-silicone CPI was performed via a penoscrotal approach. Penile circumference was measured at the base and distal shaft before and after implant placement. Penile length was measured from the pubic bone to the tip of the glans penis before and after implantation of Augmenta.

MAIN OUTCOME MEASURE

Objective outcomes included changes in penile circumference and shaft length in both the flaccid and erect state, both before and after CPI placement.

RESULTS

In 5 cadaver models, implantation of the Augmenta CPI increased flaccid penile shaft base circumference from an average of 8.7 cm to 12.0 cm after implantation (39.1% increase, P < .001). Flaccid distal circumference increased from 7.3 cm to 10.3 cm (41.8% increase, P = .020). During the erect state, penile base circumference increased from an average of 12.5 cm to 13.7 cm (6.3% increase, P = .273), while distal erect circumference changed from an average of 11.3 cm to 12.4 cm (9.7% increase, P = .298). Nonstretched flaccid shaft length increased from an average of 12.1 cm to 14 cm (15.2% increase, P = .073).

CLINICAL IMPLICATIONS

The Augmenta CPI could serve as alternative option for men seeking cosmetic penile enhancement.

STRENGTHS AND LIMITATIONS

Limitations include a small number of cadavers which do not completely reproduce living physiologic function and the use of a single technical approach. However, a consistent and standardized surgical approach reduces operator-dependent outcomes. Another strength is the use of fresh human cadavers that most closely represent live models.

CONCLUSION

In a cadaveric model, the Augmenta CPI demonstrates enhancements in penile girth in both the flaccid and erect state. The unique honeycomb technology, the embedded polyester mesh, and the antimicrobial hydrophilic coating of the Augmenta CPI may provide an advantage to currently available CPIs. Clinical trials will be needed to demonstrate both the safety and feasibility. Clavell-Hernández J, Tatem AJ, Lipshultz LI, et al. The Augmenta Implant: A Cadaver Model of a Novel Anatomic Subdermal Implant for Cosmetic Penile Enhancement. Sex Med 2021;XX:XXXXXX.

[The "right" patient for implant surgery in urology : Why patient selection, informed consent, and communication are so important for patient satisfaction]

In implant surgery for erectile dysfunction and urinary incontinence, adequate patient selection is essential for postoperative therapy success. Several scientific studies report patient satisfaction rates for penile implants and artificial urinary sphincter implantation of over 90%. Nevertheless, studies also report, that between 5 and 30% of the patients are not satisfied with the result of their operation. Sufficient patient information and consent prior surgical procedure in urological prosthetics are a key determinant for later patient satisfaction and therapy success. Diligent assessment of realistic expectations, possible complications, and risks must be made. Unrealistic and exaggerated expectations need to be met and discussed with the patient. Therefore adequate physician-patient communication is essential. Especially in the case of surgical revision or for patients with risk factors, the probability of complications is higher and may significantly increase later dissatisfaction. Also, the involvement of the partner plays a major role in later patient satisfaction in urological implant surgery. Finally, there is a group of patients for which the risk of later dissatisfaction is particularly high. These are patients with compulsive/obsessive behavior, unrealistic expectations, patients after revision surgery, self-entitled patients, as well as those patients who deny the extent of their illness, visit multiple surgeons (surgeon hopping) or have psychiatric illnesses. These patients are referred to with the acronym "CURSED" patients.

Erectile dysfunction and penile rehabilitation after pelvic fracture: a systematic review and meta-analysis

OBJECTIVE

To investigate the rate of erectile dysfunction (ED) after pelvic ring fracture (PRF).

DESIGN

Systematic review and meta-analysis.

METHODS

A systematic literature search of the Cochrane, EMBASE, MEDLINE, Scopus and Web of Science Library databases was conducted in January 2020. Included were original studies performed on humans assessing ED after PRF according to the 5-item International Index of Erectile Function (IIEF-5) questionnaire and fracture classification following Young and Burgess, Tile or Arbeitsgemeinschaft für Osteosynthesefragen/Orthopedic Trauma Association. Furthermore, interventional cohort studies assessing the effect of penile rehabilitation therapy with phosphodiesterase-5-inhibitors (PDE-5-I) on IIEF-5 scores compared before and after treatment were included. Results were presented as forest plots of proportions of patients with ED after PRF or mean changes on IIEF-5 questionnaires before and after penile rehabilitation. Studies not included in the quantitative analysis were narratively summarised. Risk of bias assessment was conducted using the revised tool for the Quality Assessment on Diagnostic Accuracy Studies.

RESULTS

The systematic literature search retrieved 617 articles. Seven articles were included in the qualitative analysis and the meta-analysis. Pooled proportions revealed 37% of patients with ED after suffering any form of PRF (result on probability scale pr=0.37, 95% CI: 0.26 to 0.50). Patients after 3 months of penile rehabilitation therapy reported a higher IIEF-5 score than before (change score=6.5 points, 95% CI: 2.54 to 10.46, p value=0.0013).

CONCLUSION

Despite some heterogeneity and limited high-quality research, this study concludes that patients suffering from any type of PRF have an increased risk of developing ED. Oral intake of PDE-5-I for the purpose of penile rehabilitation therapy increases IIEF-5 scores and may relevantly influence quality-of-life in these patients.

PROSPERO REGISTRATION NUMBER

CRD42020169699.

"Pumpology": the Realistic Issues Associated with Pump Placement in Prosthetic Surgery

PURPOSE OF REVIEW

The goal of this paper was to discuss the issues and/or overt complications associated with the 3-piece inflatable penile prosthesis (3-IPP) pump. We also addressed how to resolve such issues with or without surgical intervention.

RECENT FINDINGS

Numerous modifications of the 3-IPP pump have been introduced with multiple techniques to place the pump. These are largely dependent on the approach to place the 3-IPP. Pump issues may inevitably occur, and there are numerous special maneuvers that can be performed to resolve pump issues. It is important for urologists to know maneuvers for pump malfunctions to prevent unnecessary surgical procedures and pump revision. Several studies are reviewed regarding pump issues and patient satisfaction; however, a more structured prospective research project is warranted to further evaluate these issues.

Comparison of Satisfaction With Penile Prosthesis Implantation in Patients With Radical Prostatectomy or Radical Cystoprostatectomy to the General Population

Introduction

Penile prosthesis implantation is a widely used treatment option for erectile dysfunction. Data is limited with regard to patient satisfaction with a penile prosthesis following radical prostatectomy/cystoprostatectomy vs patients with erectile dysfunction of other etiologies.

Aim

To examine patient satisfaction with penile prosthesis implantation and determine if a difference in satisfaction exists in post-prostatectomy/cystoprostatectomy patients vs patients with erectile dysfunction of other etiologies. We hypothesize that etiology does not affect satisfaction.

Methods

A total of 164 patients underwent penile prosthesis implantation at our institution between August 2017 and December 2019, with 102 patients completing a validated 14 item questionnaire, Erectile Dysfunction Inventory of Treatment Satisfaction (EDITS), at 6 months postoperation. Demographics, surgical characteristics, and erectile dysfunction etiology were recorded. Patients were assigned to one of 2 groups: postprostatectomy/postcystoprostatectomy erectile dysfunction or other etiologies. The study group was further analyzed between radical prostatectomy or radical cystoprostatectomy.

Main Outcome Measures

Satisfaction based on key EDITS questions with postradical prostatectomy/cystoprostatectomy vs patients with erectile dysfunction of other etiologies.

Results

Responses to 3 questions were analyzed: overall satisfaction, expectations met in the past 4 weeks, and confidence in the ability to participate in sexual activity. Chi-square analysis was performed to determine the difference in responses. No difference was seen in overall satisfaction (P = .96), expectations (P = .78), or confidence (P = .78) between groups. On subgroup analysis, there was no difference in reported overall satisfaction (P = .47) or confidence (P = .080) between postprostatectomy and postcystoprostatectomy patients. Postprostatectomy and postcystoprostatectomy patients differed in whether the penile prosthesis implantation met expectations (P = .033). Postprostatectomy patients reported a mean score of 3.5/4 compared to postcystoprostatectomy patients, who reported a mean of 3.0/4.

Conclusions

Our analysis suggests that key erectile function scores are not significantly different between postprostatectomy/postcystoprostatectomy patients compared to other etiologies. The difference in measures between postprostatectomy and postcystoprostatectomy patients is not significant or of unclear significance.

Registration # of clinical trial: HSC-MS-19-0320

Howell S, Palasi S, Green T, et al. Comparison of Satisfaction With Penile Prosthesis Implantation in Patients With Radical Prostatectomy or Radical Cystoprostatectomy to the General Population. Sex Med 2021;9:100300.

Prevalence of post-prostatectomy erectile dysfunction and a review of the recommended therapeutic modalities

Radical prostatectomy (RP) represents one of the most commonly used first-line treatment modalities in men with localized prostate cancer. One of the most feared post-surgical complications is erectile dysfunction (ED), usually caused by direct damage to the cavernous nerves or due to neuropraxia. Penile rehabilitation is an emerging concept that was proposed to stimulate and accelerate recovery of erectile function after RP. The goal is to improve blood flow to the penis, increasing cavernous oxygenation and avoiding fibrosis. The most common used modalities include oral phosphodiesterase type 5 inhibitors (PDE5-I), vacuum erection devices (VEDs), intracorporeal injection (ICI) therapy, medicated urethral system for erections (MUSE), and a combination of these treatments. For those patients with severe ED, ED refractory to medical therapy and/or seeking long term reliable results, the penile prosthesis implant remains an excellent alternative. We conducted a broad review of post-prostatectomy ED prevalence with different techniques and the success rates of the different therapeutic approaches.

Intraoperative and postoperative complications of penile implant surgery. Diagnosis and treatment

We describe the most frequent complications associated with penile implant surgery, paying special attention to their practical management. We have analyzed preoperative complications and postoperative complications separately. The intraoperative include perforation of the corpora cavernosa during dilation, cylinder cross-over or cross-placement and urethral injury during implantation. The most frequent postoperative complications are mechanical failure, cylinder erosion and prosthesis infection. We emphasize on rescue surgery and reimplantation techniques in cavernous tissue fibrosis.

Prostatic irradiation-induced sexual dysfunction: A review and multidisciplinary guide to management in the radical radiotherapy era (Part II on Urological Management)

Prostate cancer is the most common malignancy in men and the second leading cause of cancer-related death in men. Radiotherapy is a curative option that is administered via external beam radiation, brachytherapy, or in combination. Sexual dysfunction is a common toxicity following radiotherapy, similar to men undergoing radical prostatectomy, but the etiology is different. The pathophysiology of radiation-induced sexual dysfunction is multi-factorial, and the toxicity is a major cause of impaired quality of life among long-term prostate cancer survivors. Management of a patient's sexual function during and after radiotherapy requires multidisciplinary coordination of care between radiation oncology, urology, psychiatry, pharmacy, and dermatology. This review provides a framework for clinicians to better understand prostatic radiotherapy-induced sexual dysfunction diagnosis, evaluation, and a patient-centered approach to toxicity preventive strategies and management.

Novel Emerging Therapies for Erectile Dysfunction

Currently, several treatments exist for the improvement of erectile dysfunction (ED). These include medical therapies such as phosphodiesterase type 5 inhibitors (PDE5-Is), invasive methods such as intracavernosal injection therapy of vaso-active substances, vacuum erection devices, and penile prosthesis implants. However, the percentage of patients that are unresponsive to available treatments and who drop out from treatments remains high. Current evidence reveals that the pathogenesis of ED is related to multiple factors including underlying comorbidities, previous surgery, and psychological factors. Diverse approaches using novel molecular pathways or new technologies have been tested as potential therapeutic options for difficultto-treat ED populations. Melanocortin receptor agonist, a centrally acting agent, showed promising results by initiating erection without sexual stimulation in non-responders to PDE5-Is. Recent clinical and pre-clinical studies using human tissues suggested that new peripherally acting agents including the Max-K channel activator, guanylate cyclase activator, and nitric oxide donor could be potential therapies either as a monotherapy or in combination with PDE5-Is in ED patients. According to several clinical trials, regeneration therapy using stem cells showed favorable data in men with diabetic or post-prostatectomy ED. Low-intensity shock wave therapy also demonstrated promising results in patients with vasculogenic ED. There are growing evidences which suggest the efficacy of these emerging therapies, though most of the therapies still need to be validated by well-designed clinical trials. It is expected that, should their long-term safety and efficacy be proven, the emerging treatments can meet the needs of patients hitherto unresponsive to or unsatisfied by current therapies for ED.

Surgical niche for the treatment of erectile dysfunction

Penile erection implicates arterial inflow, sinusoidal relaxation and corporoveno-occlusive function. By far the most widely recognized vascular etiologies responsible for organic erectile dysfunction can be divided into arterial insufficiency, corporoveno-occlusive dysfunction or mixed type, with corporoveno-occlusive dysfunction representing the most common finding. In arteriogenic erectile dysfunction, corpora cavernosa show lower oxygen tension, leading to a diminished volume of cavernosal smooth muscle and consequential corporoveno-occlusive dysfunction. Current studies support the contention that corporoveno-occlusive dysfunction is an effect rather than the cause of erectile dysfunction. Surgical interventions have consisted primarily of penile revascularization surgery for arterial insufficiency and penile venous surgery for corporoveno-occlusive dysfunction, whatever the mechanism. However, the surgical effectiveness remained debatable and unproven, mostly owing to the lack of consistent hemodynamic assessment, standardized select patient and validated outcome measures, as well as various surgical procedures. Penile vascular surgery has been disclaimed to be the treatment of choice based on the currently available guidelines. However, reports on penile revascularization surgery support its utility in treating arterial insufficiency in otherwise healthy patients aged <55 years with erectile dysfunction of late attributable to arterial occlusive disease. Furthermore, it is noteworthy that penile venous surgery might be beneficial for selected patients with corporoveno-occlusive dysfunction, especially with a better understanding of the innovated venous anatomy of the penis. Penile vascular surgery might remain a viable alternative for the treatment of erectile dysfunction, and could have found its niche in the possibility of obtaining spontaneous, unaided and natural erection.

Infrapubic approach for placement of inflatable penile prosthesis: contemporary review of technique and implications

Inflatable penile prosthesis (IPP) is an effective treatment for erectile dysfunction refractory to nonsurgical management. The infrapubic approach for IPP placement is less frequently employed than the penoscrotal approach, with only about 25% of IPPs placed via this method. Underutilization of the infrapubic method may be due to fear of injuring the penile dorsal neurovascular bundle, perceived difficulties of scrotal pump placement through a distant location, or insufficient distal corporal exposure. However, this approach appears to result in favorable operative times, faster time to device activation, equivalent postoperative satisfaction and quality of life, and similar complication rates. We provide a contemporary review of literature published before May 2019 regarding the infrapubic approach for IPP placement, technical considerations, and postoperative expectations.

Sexual functions of females married to males with semi-rigid penile implant: A cross-sectional study

Erectile dysfunction is a highly prevalent disorder. It is estimated that more than 50% of men who ranged in age from 40 to 70 years old suffer from erectile dysfunction to some degree. We aimed in this pilot cross-sectional study to determine female sexual function and social satisfaction before and 6 months after penile prosthesis implant. This study was carried on 50 consecutive married women whose husbands underwent malleable penile prosthesis implant in our department from July 2015 to July 2016. Our results showed significant increase in desire, lubrication, orgasm, and satisfaction scores after 6 months of penile prosthesis operation compared to scores before penile prosthesis implant (p < 0.001). Moreover, our study demonstrated significant increase in lubrication score in non-female genital mutilation after penile prosthesis implant (p 0.049). In addition, the results showed inverse correlations between age and female genital mutilation and female sexual function index scores after penile prosthesis implant. On the contrary, there were no correlations between number of offsprings and residence and duration of marriage and different domains of female sexual function index scores. Finally, penile prosthesis operation for patients with erectile dysfunction has a great impact on sexual functions of their female partners. We recommend preoperative and postoperative female partner involvement as a part of the treatment strategy for men undergoing penile prosthesis implant.

Postoperative vacuum therapy following AMS™ LGX 700® inflatable penile prosthesis placement: penile dimension outcomes and overall satisfaction

Penile shortening after inflatable penile prosthesis for erectile dysfunction is a common postoperative patient complaint and can reduce overall satisfaction with the procedure. In this prospective study we report our results regarding penile dimensions and patient satisfaction outcomes after 1 year of follow-up from AMS™LGX700® penile prosthesis implant with 6 months of vacuum erectile device therapy. Seventy-four selected patients with medically refractory erectile dysfunction underwent AMS™ LGX 700® IPP placement. Postoperatively, patients were assigned vacuum device therapy for 5 min twice daily. Follow-up continued for 1 year after surgery. Dimensional and functional results were assessed. Baseline median preoperative stretched penile length and girth were 14 cm (range 10-17) and 9 cm (range 7-12), respectively. At the end of the study penile median dimensional outcomes were 17 cm (range 13-23) for length and 11 cm (range 10-13) for girth while a median number of 24 pumps (range 18-29) to fully inflate the device was seen. Baseline median International Index of Erectile Function (IIEF-5) score was 9 (range 5-11), at 6 months 20 (range 18-26) and at 1 year was 25 (range 20-27) (p < 0.0001). Median Erectile Dysfunction Inventory of Treatment Satisfaction (EDITS) score at the end of the follow-up was 74 (range 66-78). Our postoperative rehabilitation program is feasible and should be recommended after prothesis surgery in order to increase overall satisfaction with the procedure. Penile postoperative dimensional outcomes were statistically significant improved and complications were negligible.

Proximal corporal reconstruction: adjunct of penile prosthesis revision surgery

Proximal corporal deformities may account for failed inflatable penile prosthesis (IPP) surgery. No contemporary series has focused solely on describing the natural history and management of isolated proximal corporal deformities in patients after IPP surgery. The aim of the current report is to present the clinical courses and surgical management with outcomes of proximal corporal deformities in the context of prior IPP implantation surgery. We conducted a retrospective analysis of the Johns Hopkins Hospital institutional database of IPP surgeries from May 2006 to March 2017 consisted of 198 patients who had undergone IPP revisions. All cases involving surgical revisions associated with isolated proximal corporal deformities (proximally from the penoscrotal junction) were identified. Data retrieved included clinical characteristics, operative findings, and surgical outcomes. Main outcome measures are the ability to achieve successful sexual intercourse after IPP revision. The findings of proximal corporal deformities were manifest in fifteen patients who had undergone previous IPP surgery. Deformities consisted of corporal dilatation (15 patients) and corporal rupture (8 patients). Associated prosthesis defects were mechanical failure (2 patients), aneurysmal dilatation (5 patients), and device breakage (4 patients). Median IPP treatment duration was 14 years. Mean number of prior IPP surgeries were 4.2 times. All patients underwent reduction corporoplasty with IPP device replacements consisting of controlled expansion devices. Mean age at revision was 59.7 years. All patients reported successful sexual intercourse and satisfaction within 6 months' follow-up after surgical revision. Proximal corporal deformities arising after IPP surgery are associated with dysfunctional device operation and as well as device defects. Proper recognition of this problem allows the opportunity for surgical correction with a definitive reduction corporoplasty. Failure to recognize these abnormalities timely may predispose to unsuccessful revisions and complicate future definitive surgical repair.

Dynamic infusion cavernosometry and cavernosography for classifying venous erectile dysfunction and its significance for individual treatment

Background:

The precise pathophysiology of venous erectile dysfunction (VED) was still unclear. Dynamic infusion cavernosometry and cavernosography (DICC) was the gold standard approach for the diagnoses of VED. However, a standard operative procedure of DICC was needed and it was unclear whether DICC could show promise in accurate assessment and treatment of VED. The aim of this study was to establish an optimized operation process of DICC and evaluate the efficacy of DICC in the diagnoses and therapy of VED.

Methods:

One hundred and forty-seven VED patients identified by the color doppler duplex ultrasonography (CDDU) were included. Then the method of DICC was adopted to assess the severity of VED and all patients were divided into 4 groups, including (1) non-VED; (2) mild VED; (3) moderate VED and (4) severe VED. All patients received the treatment of psychotherapy. Drug therapy, the intervention embolism of corpus cavernosum and the implantation of penile prosthesis were applied if psychotherapy was ineffective for patients. The international index of erectile function (IIEF-5) scores of patients were collected and compared before and after treatment.

Results:

IIEF-5 score of non-VED group after psychotherapy (19.35 ± 3.59) and drug therapy (23.31 ± 0.75) was higher than that before psychotherapy (15.30 ± 2.72, t = −4.31, P < 0.01) and drug therapy (16.62 ± 1.50, t = −19.13, P < 0.01). IIEF-5 scores of mild VED (18.25 ± 2.60) and moderate VED group (14.83 ± 4.17) after treatment was improved significantly by intervention embolism of corpus cavernosum when compared with those before treatment (mild: 15.50 ± 2.14, t = −2.31, P < 0.05; moderate: 11.83 ± 2.86, t = −1.45, P < 0.05). However, drug therapy and intervention embolism (IE) of corpus cavernosum showed poor effects on patients with moderate and severe VED patients (P > 0.05). IIEF-5 score of severe VED group was increased under the treatment of implantation of penile prosthesis (23.25 ± 0.71) compared with that before treatment (8.00 ± 0.39, t = −53.25, P < 0.05).

Conclusion:

DICC was a valid diagnostic tool that could identify patients with VED. And DICC had great effect on the diagnosis and individual therapy for patients with VED in varying degrees. Moreover, the manipulation of DICC needed uniform standards.

Predictors of Satisfaction in Men After Penile Implant Surgery

INTRODUCTION

Despite the high satisfaction with penile implant (PI) surgery reported in the literature, a significant proportion of patients remain dissatisfied.

AIM

To evaluate satisfaction after PI surgery, using a single question and a scoring system. Furthermore, we attempted to define factors that predicted high patient satisfaction.

METHODS

The study population consisted of all patients undergoing PI surgery between 2009 and 2015. Comorbidity, demographic, and implant information were recorded. Complications recorded included: minor (requiring no re-operation) such as penile or scrotal hematoma, superficial wound breakdown; major (requiring hospitalization or re-operation) such as device infection, erosion, and mechanical malfunction. Patient satisfaction was defined using a single question posed to the patient 6 months after surgery using a 5-point Likert scale (5 being the most satisfied). Descriptive statistics were used to define complication rates and multivariable analysis (MVA) was performed to define predictors of high satisfaction (score ≥ 4), including presence and degree of complications, Peyronie's disease (PD), diabetes mellitus (DM), number of vascular comorbidities, body mass index (BMI) > 30, and patient age.

MAIN OUTCOME MEASURE

Patients with a major complication, with or without an additional minor complication, had a higher likelihood of being dissatisfied (25%) compared to patients with no complication or only minor complication 1.9% (no complications) and 3.7% (only minor complications), P < .001.

RESULTS

902 patients were analysed. Mean age was 56.6 ± 10.6 years. Mean BMI was 30 ± 5. Comorbidity profile was diabetes 75%, dyslipidaemia 44%, hypertension 33%, cigarette smoking 32%, and PD 34%. 76% had a malleable implant (MPP) and 24% an inflatable implant (IPP). 31% had a minor complication and 9% a major complication. 93% had high satisfaction (score ≥4). Patients with any complication had a reduced rate of high satisfaction (97.5% vs 87.7%; P < .001) and even more pronounced with a major complication (96.7% vs 64.2%; P < .001). On MVA, only the absence of a major complication was a significant predictor of high satisfaction (OR 20, 95% CI 9-50, P < .001).

CONCLUSION

A high percentage of men are satisfied after penile implant surgery. Only the presence of a major complication is linked to a lower likelihood of achieving high satisfaction. Habous M, Tal R, Tealab A, et al. Predictors of Satisfaction in Men After Penile Implant Surgery. J Sex Med 2018;15:1180-1186.

Complications, functional and quality of life outcomes following primary and secondary implantation of penile prosthesis at a tertiary referral center

The implantation of a penile prosthesis (PP) may be recommended in patients with severe erectile dysfunction (ED) who do not respond to conservative treatments. The aim of this study was to evaluate complications, as well as functional and quality of life outcomes following primary and secondary implantation of PP at a tertiary referral center. In this retrospective study, a total of 51 patients (41 patients with primary (PPP) and 10 with secondary PP (SPP)) were included. Patients and operative characteristics were recorded and complications were analyzed using the Clavien-Dindo classification. To evaluate satisfaction of patients and their partners, as well as PP long-term function, follow-up data were collected by using questionnaires (Erectile Dysfunction Inventory of Treatment Satisfaction (EDITS) and QLQC30). Fifty-one patients with a median age of 61 years (IQR 52-68) received PP implantation (44 AMS 700, 7 Coloplast Titan). Main causes of ED were after radical prostatectomy (27.5%), diabetes (21,6%), and other unknown reasons (43.1%). Median time of intervention was 94.5 min (IQR 80.8-110.3) with no significant difference between PPP and SPP. Only one patient undergoing PPP surgery had grade 3 complication. Follow-up data from a total of 43 patients (84.3%) with a median follow-up of 26 months (IQR 17-41 mo) was recorded. At the time of follow-up, 88.4% of the PPs were still functional (PPP n = 34 (94.4%), SPP n = 4 (57.1%), p = 0.024). Overall estimated mean PP survival was 63.0 mo ((95% CI) 56.2-70.8 mo) with no significant difference between PPP and SPP. Overall satisfaction (EDITS und QLQC30) was high in both groups with no significant difference. PP implantation shows to be a safe treatment option in the management of severe ED.

Surgical Techniques for Managing Post-prostatectomy Erectile Dysfunction

Purpose of Review

Due to the increasing numbers of radical prostatectomies (RP) performed for prostate cancer, a substantial number of patients are now suffering from post-operative erectile dysfunction (ED). The aim of this study is to summarize the current literature on surgical techniques for managing post-prostatectomy erectile dysfunction.

Recent Findings

The PubMed database was searched for English-language articles published up to Jan 2017 using the following search terms: “prostatectomy AND erectile dysfunction”, “prostatectomy AND penile prostheses”, and “prostatectomy AND penile implants”. All of the studies that evaluated medical treatment were excluded. In the last few decades, the understanding of the anatomy of the male pelvis and prostate has improved. This has led to significant changes in the nerve-sparing radical prostatectomy techniques, with the aim of preserving post-surgical erectile function (EF). In this scenario, the prostate vascular supply and the anatomy of the neurovascular bundles have a central role. Penile prosthesis implantation is considered the third-line treatment option for RP ED patients, and they have been reported to be a very successful treatment with the highest patient satisfaction rate.

Summary

Considering the failure of penile rehabilitation, and the lack of evidence for accessory pudendal artery (APA) preservation and nerve graft, nerve-sparing surgery and penile prostheses represent, today, the only methods to permanently and definitively preserve or erectile function after RP.

Diagnostic value of four-dimensional CT angiography in arterial erectile dysfunction using 320-detector row dynamic volume CT

The present study aims to evaluate the diagnostic value of four-dimensional CT angiography (4D-CTA) in the diagnosis of arterial erectile dysfunction (ED) using 320-detector row dynamic volume CT. Arterial ED patients attributed to arterial insufficiency were enrolled. To induce penile erection, an intracavernous injection (ICI) of corpus cavernosum with a vasoactive drug was administered. Patients were assigned into the erection hardness score (EHS) 1/2 group or EHS 3/4 group. Color duplex Doppler ultrasound (CDDU) was used to analyze blood flow spectrum. Each patient was examined using 4D-CTA. Receiver operating characteristic (ROC) curve was plotted to evaluate the diagnostic value of 4D-CTA in arterial ED. According to Irwin Goldstein, the EHS 3/4 group (n=38) had a shorter course of ED and low proportion with history of hypertension, hyperlipidemia, and diabetes than the EHS 1/2 group (n=35). The peak systolic velocity (PSV), end diastolic velocity (EDV), and resistant index (RI) in the EHS 3/4 group were lower than those of the EHS 1/2 group. 4D-CTA showed there were a total of 35 cases in the EHS 1/2 group (two cases missed) and 38 cases in the EHS 3/4 group (seven cases misdiagnosed). Using 4D-CTA to diagnose arterial ED, the area under the ROC curve yielded a value of 0.879, with a specificity of 93.9% and a sensitivity of 82.5%. These findings indicated that 4D-CTA using 320-detector row dynamic volume CT is a promising and reliable utility in diagnosing arterial ED.

Non-infected penile prosthesis cultures during revision surgery; comparison between antibiotic coated and non - coated devices

Introduction:

Aim of this study is to investigate bacterial growth on non-infected devices and compare antibiotic-coated and non-coated implants.

Materials and methods:

The charts of 71 patients who underwent revision surgeries for penile prosthesis between 1995 and 2013 were reviewed. Of those, 31 devices were antibiotic-coated prostheses, while 40 of the implants were non-coated. Swab cultures were routinely obtained from corporal, pump or reservoir site during the operation. If a bacterial biofilm was determined on the prosthesis, it was also cultured.

Results:

A total of 5 different organisms were cultured from 18 patients. Of them, 4 devices were antibiotic-coated and the other 14 were non-coated devices. Staphylococcus epidermidis was the most common organism, while Staphylococcus hominis, beta hemolitic streptococcus, Escherichia coli and Proteus mirabilis were also cultured. All patients who had positive cultures were treated with appropriate antibiotics for four weeks postoperatively. Median follow-up time was 41 months, ranging between 8 and 82 months. One prosthesis (non-coated) became clinically infected in the follow-up period with a totally different organism. Culture positivity rates of antibiotic-coated and non-coated devices were 13% and 35% respectively and the result was significant (p=0.00254).

Conclusions:

Positive bacterial cultures are present on non-infected penile prostheses at revision surgeries in some of the patients. Antibiotic coated prostheses have much less positive cultures than non-coated devices.

The Status of Biofilms in Penile Implants

Erectile dysfunction is prevalent among men and will continue to become more so with the aging population. Of the available treatment options, implantable prosthetic devices are typically thought of as a third line treatment even though they have the highest satisfaction rate and continually improving success rates. Infection and mechanical failure are the most common reasons for implant revision in the past. Since the development of more reliable devices, bacterial biofilms are coming to the forefront of discussion as causes of required revision. Biofilms are problematic as they are ubiquitous and exceedingly difficult to prevent or treat.

Optimizing veteran-centered prostate cancer survivorship care: study protocol for a randomized controlled trial

Background

Although prostate cancer is the most common cancer among veterans receiving care in the Veterans Health Administration (VA), more needs to be done to understand and improve survivorship care for this large population. This study, funded by VA Health Services Research & Development (HSR&D), seeks to address the need to improve patient-centered survivorship care for veterans with prostate cancer.

Methods/Design

This is a two-armed randomized controlled trial (RCT) with a target enrollment of up to 325 prostate cancer survivors per study arm (total anticipated n = 600). Patients will be recruited from four VA sites. Patient eligibility criteria include age range of 40–80 years, one to ten years post-treatment, and currently experiencing prostate cancer symptom burden. We will compare the “Building Your New Normal” program, a personally-tailored automated telephone symptom management intervention for improving symptom self-management to usual care enhanced with a non-tailored newsletter about symptom management. Primary outcomes include changes in symptom burden, bother, and health services utilization at five and 12 months after enrollment. Secondary outcomes include long-term psychosocial outcomes (e.g. subjective health, perceived cancer control). We will use multivariable regression analysis to evaluate the impact of the intervention on primary and secondary outcomes. We will conduct a process evaluation to understand the effective intervention components and explore possibilities for broader implementation and dissemination.

Discussion

Our central hypothesis is that intervention group participants will have improved and more confident symptom self-management and prostate cancer quality of life following the intervention and that these outcomes will translate to more efficient use of health services. The study results will provide much needed information about how to optimize the quality of care, and life, of veteran prostate cancer survivors.

Trial registration

ClinicalTrials.gov ID NCT01900561; Registered on 22 July 2013.

Electronic supplementary material

The online version of this article (doi:10.1186/s13063-017-1925-4) contains supplementary material, which is available to authorized users.

[Evolution of the number and type of penile prostheses implanted in France for erectile dysfunction: Analysis of French national coding database (2006-2013)]

OBJECTIVES

Patients who are not responding to injectable and/or vacuum oral pharmacological treatments can receive a penile prosthesis. Three types of penile prostheses are used in France: rigid, semi-rigid and inflatable prostheses 3-piece or 2-piece. We have assessed the National surgical insertion practices between 2006 and 2013 (number of prostheses insertions, types, procedure locations, number of surgeons and distribution [public or private sectors]).

MATERIALS AND METHODS

Data analysis from the French Technical Agency of Information on Hospitals (ATIH) (2006-2013) using the common classification of medical acts (CCAM) and after code extractions related to this surgery (JHLA002, JHLA003, JHLA004).

RESULTS

Between 2006 and 2013, the number of penile implants in France doubled (307 to 633), inflatable penile prostheses with an extracavernous component remained the most frequently used (87 %) (228 to 552) (+142 %). The use of semi-rigid prostheses declined by 26.7 %. The distribution between the private and public sector was close to 1 in 2013. More than half of French penile prostheses were implanted in three regions (Île-de-France, Languedoc-Roussillon, Rhône-Alpes). Nearly 62 % of surgeons implanted only one or two three-compartment prostheses in 2013.

CONCLUSION

The number of penile prostheses in France doubled between 2006 and 2013. Three regions were particularly active as far as this surgery is concerned (Île-de-France, Languedoc-Roussillon, Rhône-Alpes). They were boosted by 5 surgeons with more than 20 prostheses surgeries a year.

LEVEL OF EVIDENCE

4.

Postprostatectomy Erectile Dysfunction: A Review

In the current era of the early diagnosis of prostate cancer (PCa) and the development of minimally invasive surgical techniques, erectile dysfunction (ED) represents an important issue, with up to 68% of patients who undergo radical prostatectomy (RP) complaining of postoperative erectile function (EF) impairment. In this context, it is crucial to comprehensively consider all factors possibly associated with the prevention of post-RP ED throughout the entire clinical management of PCa patients. A careful assessment of both oncological and functional baseline characteristics should be carried out for each patient preoperatively. Baseline EF, together with age and the overall burden of comorbidities, has been strongly associated with the chance of post-RP EF recovery. With this goal in mind, internationally validated psychometric instruments are preferable for ensuring proper baseline EF evaluations, and questionnaires should be administered at the proper time before surgery. Careful preoperative counselling is also required, both to respect the patient's wishes and to avoid false expectations regarding eventual recovery of baseline EF. The advent of robotic surgery has led to improvements in the knowledge of prostate surgical anatomy, as reflected by the formal redefinition of nerve-sparing techniques. Overall, comparative studies have shown significantly better EF outcomes for robotic RP than for open techniques, although data from prospective trials have not always been consistent. Preclinical data and several prospective randomized trials have demonstrated the value of treating patients with oral phosphodiesterase 5 inhibitors (PDE5is) after surgery, with the concomitant potential benefit of early re-oxygenation of the erectile tissue, which appears to be crucial for avoiding the eventual penile structural changes that are associated with postoperative neuropraxia and ultimately result in severe ED. For patients who do not properly respond to PDE5is, proper counselling regarding intracavernous treatment should be considered, along with the further possibility of surgical treatment for ED involving the implantation of a penile prosthesis.

Understanding and Managing Erectile Dysfunction in Patients Treated for Cancer

Cancer can cause sexual adverse effects by direct and indirect pathways. It can involve sexual organs, indirectly affect body image, or cause fatigue or depression with subsequent effects on libido. Erectile dysfunction (ED), the inability to obtain or maintain an erection firm enough for sexual intercourse, can also result from adverse effects of cancer treatment, such as fatigue, pain, or anxiety about therapy. In addition, depressed feelings about having cancer can affect sexuality, causing a range of signs and symptoms that can lead to ED. Chemotherapy, hormone therapy, surgery, and radiation can all cause sexual adverse effects. Additional factors that play a role include patient age and degree of ED before starting cancer treatment. In this article, we discuss how chemotherapy, hormone therapy, surgery, and radiation affect erectile function as well as possible treatment options for ED.

Erectile dysfunction

Erectile dysfunction is a multidimensional but common male sexual dysfunction that involves an alteration in any of the components of the erectile response, including organic, relational and psychological. Roles for nonendocrine (neurogenic, vasculogenic and iatrogenic) and endocrine pathways have been proposed. Owing to its strong association with metabolic syndrome and cardiovascular disease, cardiac assessment may be warranted in men with symptoms of erectile dysfunction. Minimally invasive interventions to relieve the symptoms of erectile dysfunction include lifestyle modifications, oral drugs, injected vasodilator agents and vacuum erection devices. Surgical therapies are reserved for the subset of patients who have contraindications to these nonsurgical interventions, those who experience adverse effects from (or are refractory to) medical therapy and those who also have penile fibrosis or penile vascular insufficiency. Erectile dysfunction can have deleterious effects on a man's quality of life; most patients have symptoms of depression and anxiety related to sexual performance. These symptoms, in turn, affect his partner's sexual experience and the couple's quality of life. This Primer highlights numerous aspects of erectile dysfunction, summarizes new treatment targets and ongoing preclinical studies that evaluate new pharmacotherapies, and covers the topic of regenerative medicine, which represents the future of sexual medicine.

Prevention and management of post prostatectomy erectile dysfunction

Sexual dysfunction is common in patients with prostate cancer (PC) following radical prostatectomy (RP). Review the available literature concerning prevention and management strategies for post-RP erectile function (EF) impairment in terms of preoperative patient characteristics, intra and postoperative factors that may influence EF recovery, and postoperative treatments for erectile dysfunction (ED). A literature search was performed using Google and PubMed database for English-language original and review articles, either published or e-published up to July 2013. The literature still demonstrates a great inconsistency in the definition of what is considered normal EF both before and after RP. Thus, using validated psychometric instruments with recognized cut-offs for normalcy and severity during the pre- and post-operative evaluation should be routinely considered. Therefore, a comprehensive discussion with the patient about the true prevalence of postoperative ED, the concept of spontaneous or pharmacologically-assisted erections, and the difference between “back to baseline” EF and “erections adequate enough to have successful intercourse” clearly emerge as key issues in the eventual understanding of post-RP ED prevention and promotion of satisfactory EF recovery. Patient factors (including age, baseline EF, comorbid conditions status), cancer selection (non- vs. uni- vs. bilateral nerve-sparing), type of surgery (i.e., intra vs. inter vs. extrafascial surgeries), surgical techniques (i.e., open, laparoscopic and robotically-assisted RP), and surgeon factors (i.e., surgical volume and surgical skill) represent the key significant contributors to EF recovery. A number of preclinical and clinical data show that rehabilitation and treatment in due time are undoubtedly better than leaving the erectile tissue to its unassisted postoperative fate. The role of postoperative ED treatment for those patients who received a non-nerve-sparing RP was also extensively discussed. Optimal outcomes are achieved mainly by the careful choice of the correct patient for the correct type of surgery. Despite a plethora of potential rehabilitative approaches, they should be only considered as “strategies”, since incontrovertible evidence of their effectiveness for improving natural EF recovery is limited. Conversely, numerous effective therapeutic options are available for treating post-RP ED.

Patient and partner outcome of inflatable and semi-rigid penile prosthesis in a single institution

INTRODUCTION

Penile prostheses are subject to a continuous development and have gained better mechanical reliability and safety during the last decades. In this study, we aimed to investigate the outcomes and satisfaction rates of inflatable penile prosthesis (IPP) and semirigid penile prosthesis (SPP) implantation.

MATERIALS AND METHODS

From August 2001 to June 2012, 257 men with erectile dysfunction (ED) underwent penile prosthesis implantation (PPI) at our institution. Of the 257 patients, 118 underwent implantation of IPP and 139 underwent SPP implantation. The pre-operative and post-operative erectile status of the patients were assessed by international index of erectile function (IIEF) questionnaire. The satisfaction of patients and partners were evaluated by a telephone interview using the erectile dysfunction inventory of treatment satisfaction (EDITS) questionnaire and EDITS partner survey.

RESULTS

The overall major complication rate was higher in IPP group. PPI led to a significant improvement in IIEF scores in both groups. For IPP and SPP groups the average EDITS scores were 78±11and 57±8, respectively, and that for the partners were 72±10 and 49±7, respectively (p<0.05).

CONCLUSION

Although the IPP implantation have better satisfaction rates, the SPP implantation is still a viable treatment option in the surgical treatment of ED because of low cost and high durability with acceptable satisfaction rates.

The Malleable Implant Salvage Technique: Infection Outcomes after Mulcahy Salvage Procedure and Replacement of Infected Inflatable Penile Prosthesis with Malleable Prosthesis

PURPOSE

Since its introduction in 1996 Mulcahy salvage has significantly improved outcomes for the removal and replacement of infected inflatable penile prostheses. Long-term followup data of Mulcahy salvage show an infection-free rate of 82%. A multicenter retrospective analysis of the malleable implant salvage technique was conducted to assess infection outcomes and the feasibility of conversion from malleable device back to inflatable penile prosthesis.

MATERIALS AND METHODS

This is a retrospective, institutional review board exempt, multi-institution study of 58 patients who underwent Mulcahy salvage with inflatable penile prosthesis removal and replacement with malleable prosthesis. Patient operative notes and charts were extensively reviewed to compile study data.

RESULTS

Between 2002 and 2014 a total of 58 patients underwent infected inflatable penile prosthesis removal and replacement with a malleable prosthesis via Mulcahy salvage. Of these patients 54 (93%) have remained infection-free postoperatively. Average patient age was 56.4 years and average operative time was 148 minutes. Postoperative followup (as of May 2015) ranged from 1 month to 84 months. Of the 54 patients 37 retained the malleable prosthesis and 17 (31%) subsequently underwent replacement with an inflatable penile prosthesis. This occurred on average 6.7 months after Mulcahy salvage. Four patients had persistent infection after Mulcahy salvage with the malleable prosthesis and underwent explantation.

CONCLUSIONS

This retrospective analysis of Mulcahy salvage procedure and replacement of inflatable penile prosthesis with malleable prosthesis shows a high infection-free rate. Additionally, 17 of the 54 patients who remained infection-free were able to successfully undergo subsequent removal of the malleable prosthesis and replacement with an inflatable penile prosthesis. Further prospective studies are needed to compare salvage with malleable vs inflatable penile prosthesis.

Erectile Dysfunction: A Review of Historical Treatments With a Focus on the Development of the Inflatable Penile Prosthesis

Erectile dysfunction has been a concern for men since the beginning of written history. For many men it can lead to severe psychological distress and humiliation. The treatment of erectile dysfunction has advanced significantly over the past 200 years. Men today are presented with many more viable therapy options leading to improved efficacy and more satisfactory sex lives. The objective of this article is to explore historical options for the treatment of erectile dysfunction, with particular emphasis on the development and progression of the inflatable penile prosthesis.

Long-term survival and patient satisfaction with inflatable penile prosthesis for the treatment of erectile dysfunction

Purpose

We investigated the long-term survival and patient satisfaction with an inflatable penile prosthesis as a treatment for refractory erectile dysfunction (ED).

Materials and Methods

Between July 1997 and September 2014, a total of 74 patients underwent implantation of an inflatable penile prosthesis. The present mechanical status of the prosthesis was ascertained by telephone interview and review of medical records, and related clinical factors were analyzed by using Cox proportional hazard regression model. To investigate current status and satisfaction with the devices, novel questionnaires consisting of eight items were administered.

Results

The mean (±standard deviation) age and follow-up period were 57.0±12.2 years and 105.5±64.0 months, respectively. Sixteen patients (21.6%) experienced a mechanical failure and 4 patients (5.4%) experienced a nonmechanical failure at a median follow-up of 98.0 months. Mechanical and overall survival rates of the inflatable penile prosthesis at 5, 10, and 15 years were 93.3%, 76.5%, and 64.8% and 89.1%, 71.4%, and 60.5%, respectively, without a statistically significant correlation with host factors including age, cause of ED, and presence of obesity, hypertension, and diabetes mellitus. Overall, 53 patients (71.6%) completed the questionnaires. The overall patient satisfaction rate was 86.8%, and 83.0% of the patients replied that they intended to repeat the same procedure. Among the 8 items asked, satisfaction with the rigidity of the device received the highest score (90.6%). In contrast, only 60.4% of subjects experienced orgasm.

Conclusions

The results of our study suggest that excellent long-term reliability and high patient satisfaction rates make the implantation of an inflatable penile prosthesis a recommendable surgical treatment for refractory ED.

Erectile dysfunction in urethral stricture and pelvic fracture urethral injury patients: diagnosis, treatment, and outcomes

Urethral stricture disease, pelvic fracture urethral injury (PFUI), and their various treatment options are associated with erectile dysfunction (ED). The etiology of urethral stricture disease is multifactorial and includes trauma, inflammatory, and iatrogenic causes. Posterior urethral injuries are commonly associated with pelvic fractures. There is a spectrum in the severity of both conditions and this directly impacts the treatment options offered by the surgeon. Many published studies focus on the treatment outcomes and the relatively high recurrence rates after surgical repair. This communication reviews the current knowledge of the association between ED and urethral stricture disease, as well as PFUI. The incidence, pathophysiology, and clinical ramifications of both conditions on sexual function are discussed. The treatment options for ED in those patients are reviewed and summarized.