-
Nagoya Journal of Medical Science Feb 2024Prostaglandin E1 intracavernous injection test is an established method for diagnosing erectile dysfunction. However, the evaluation is non-objective and often...
Prostaglandin E1 intracavernous injection test is an established method for diagnosing erectile dysfunction. However, the evaluation is non-objective and often influenced by the evaluator's subjectivity. Herein, we measured and objectively evaluated shear wave elastography results of the corpus cavernosum before and after injection in 16 patients who underwent prostaglandin E1 testing. The response score of prostaglandin E1 tests were "1" in 2 cases, "2" in 2 cases, and "3" in 12 cases. The average transmission velocity before the injection and at the time of maximum erection after the injection were 2.21 m/s and 1.57 m/s, respectively. Transmission velocity decreased during erection in 14 of 16 cases (87.5%). The overall rate of change in transmission velocity due to injection was -26.7% and was significantly different between the poor (responses 1 and 2: -16.1%) and good erection (response 3: -30.2%) groups. To the best of our knowledge, this is the first attempt to evaluate erectile phenomenon using percutaneous ultrasonic elastography in Japan. Rate of change in shear wave transmission velocity due to prostaglandin E1 injection in the corpus cavernosum penis was associated with the degree of erection. Therefore, the rate of change in shear wave transmission velocity in the corpus cavernosum penis could be used as an objective index of erectile phenomenon. Percutaneous ultrasonic elastography is a non-invasive and useful test method for diagnosing erectile dysfunction, determining the therapeutic effect, and predicting prognosis.
Topics: Male; Humans; Erectile Dysfunction; Alprostadil; Elasticity Imaging Techniques; Penile Erection; Penis
PubMed: 38505715
DOI: 10.18999/nagjms.86.1.104 -
Cureus Feb 2024Priapism, characterized by prolonged and painful penile erection, is a rare urological emergency with diverse etiologies. We present a case of refractory ischemic...
Priapism, characterized by prolonged and painful penile erection, is a rare urological emergency with diverse etiologies. We present a case of refractory ischemic priapism following hemodialysis in a 57-year-old male with a history of type II diabetes mellitus, hypertension, and end-stage renal disease. Despite standard conservative management, the patient's condition persisted, necessitating penile distal shunting through an intracorporeal dilatation plus Al-Ghorab corporoglandular shunt. Blood gas analysis of corpus cavernosum blood revealed severe acidosis and hypoxemia, emphasizing the systemic impact of ischemic priapism. The patient's history of erythropoietin injections and the administration of heparin during dialysis emerged as potential contributors to priapism. We discuss the complex interplay between erythropoietin, coagulation cascade, and heparin in the context of priapism development. The case underscores the need for further research to understand the specific mechanisms contributing to priapism in patients undergoing hemodialysis.
PubMed: 38496140
DOI: 10.7759/cureus.54185 -
Acta Biomaterialia Apr 2024Erectile dysfunction (ED) predominantly affects men in their 40-70s and can lead to poor quality of life. One option for ED treatment is surgical implantation of an...
Erectile dysfunction (ED) predominantly affects men in their 40-70s and can lead to poor quality of life. One option for ED treatment is surgical implantation of an inflatable penile prosthesis (IPP). However, they can be associated with negative outcomes including infection, migration or fibrosis. To improve outcomes, the interaction between the IPP device and surrounding tissues needs further investigation and this could be achieved using pre-clinical testbeds, but they need to be informed by extensive tissue testing. In this study, an experimental approach is adopted to characterise the mechanics of horse penile tissue and establish a testing protocol for penile tissue. The whole penis segments were tested in plate compression tests to obtain whole penis behaviour which is necessary for validation of a pre-clinical testbed, whilst tensile and compression tests were performed on individual penile tissues, namely corpus cavernosa and tunica albuginea. The second part of the paper deals with the development of a computational model employing an inverse finite element approach to estimate the material parameters of each tissue layer. These material parameters are in good agreement with the experimental results obtained from the individual tissue layers and whole organ tissue tests. This paper presents the first study proposing realistic nonlinear elastic material parameters for penile tissues and offers a validated testbed for IPPs. STATEMENT OF SIGNIFICANCE: Erectile Dysfunction (ED) affects over half the male population aged 40-70 potentially leading to poor quality of life. Patients not responding to conventional treatments of ED, are advised to use penile prostheses which can create an erection using implanted inflatable cylinders. A significant drawback of such prostheses, however, is the substantial tissue damage they can induce during their usage. Preclinical testbeds, including computational and bench-top models, could offer an efficient means of improving device designs to mitigate this damage but such testbeds require extensive knowledge of penile tissue properties. In this study, the authors determine penile tissue mechanics and apply an inverse FE approach to characterise the penile material properties required to validate preclinical models of the penis.
Topics: Male; Penis; Finite Element Analysis; Animals; Horses; Tensile Strength; Penile Prosthesis; Erectile Dysfunction; Biomechanical Phenomena
PubMed: 38494081
DOI: 10.1016/j.actbio.2024.03.013 -
Narra J Aug 2023Prostate cancer treatment can significantly impact erectile function, and penile rehabilitation has been proposed to improve the impacts. However, the effectiveness of...
Prostate cancer treatment can significantly impact erectile function, and penile rehabilitation has been proposed to improve the impacts. However, the effectiveness of penile rehabilitations after treatment of prostate cancer is scarce. The aim of this systematic review was to evaluate the effectiveness of different interventions of penile rehabilitation program after prostate cancer treatment. We conducted a comprehensive search of electronic databases, PubMed and Google Scholar, to identify randomized controlled trials that evaluated interventions for penile rehabilitation after prostate cancer treatment. Studies that met our inclusion criteria were systematically reviewed, and data were synthesized and analyzed. We identified 11 randomized controlled trials that evaluated different interventions for penile rehabilitation after prostate cancer treatment. The interventions included the use of phosphodiesterase type 5 inhibitors, intracavernous injections, vacuum erection devices, and penile rehabilitation programs. The data suggest that these phosphodiesterase inhibitors, intracavernous injections, vacuum erection devices, and penile rehabilitation programs are promising in improving erectile function after prostate cancer treatment. However, the optimal timing and duration of these interventions remain unclear, and there is a need for further research to determine their long-term effectiveness and safety. Healthcare providers should consider individualized approaches to penile rehabilitation, taking into account patient characteristics and preferences.
PubMed: 38454969
DOI: 10.52225/narra.v3i2.174 -
Investigative and Clinical Urology Mar 2024Erectile dysfunction (ED) is considered a microvascular disorder and serves as an indicator for the potential development of cardiovascular disease (CVD). Although left...
PURPOSE
Erectile dysfunction (ED) is considered a microvascular disorder and serves as an indicator for the potential development of cardiovascular disease (CVD). Although left ventricular diastolic dysfunction (LVDD) reflects early myocardial damage caused by microvascular disorders, the association between ED and LVDD remains poorly elucidated.
MATERIALS AND METHODS
A cross-sectional study was conducted on 123 patients with ED. They underwent RigiScan, and conventional echocardiography, and attempted International Index of Erectile Function (IIEF) questionnaire. ED severity was evaluated by measuring changes in the penile base circumference and duration of penile rigidity (≥70%) during erection. The early diastolic velocity of mitral inflow (E) and early diastolic velocity of the mitral annulus (e') were measured using echocardiography. The patients were grouped based on the presence of CVD.
RESULTS
Among 123 patients, 29 had CVD and 94 did not. Patients with CVD exhibited more pronounced ED and more severe LVDD. Associations between increased penile circumference with echocardiographic parameters were more prominent in patients with CVD than in those without CVD (ΔTtop and e' wave, r=0.508 and r=0.282, respectively, p for interaction=0.033; ΔTbase and E/e' ratio, r=-0.338 and r=-0.293, respectively, p for interaction <0.001). In the multivariate linear regression, the increase of penile base circumference was an independent risk factor for LVDD (e', B=0.503; E/e' ratio, B=-1.416, respectively, p<0.001).
CONCLUSIONS
ED severity correlated well with LV diastolic dysfunction, particularly in the presence of CVD. This study highlighted the potential role of ED assessment as early indicator of CVD development.
Topics: Male; Humans; Erectile Dysfunction; Cardiovascular Diseases; Cross-Sectional Studies; Ventricular Dysfunction, Left; Risk Factors
PubMed: 38454826
DOI: 10.4111/icu.20230272 -
Journal of Pediatric Urology Jun 2024Our goal was to assess how surgical management of hypospadias-associated penile curvature (HAPC) varies across continents, focusing on factors that influence assessment...
INTRODUCTION
Our goal was to assess how surgical management of hypospadias-associated penile curvature (HAPC) varies across continents, focusing on factors that influence assessment and decision-making.
METHODS
Members of the European Society of Pediatric Urology (ESPU), Society of Pediatric Urology (SPU), and Hypospadias International Society (HIS) participated in an anonymous, 34-question online survey addressing pre-, intra-, and postoperative elements of HAPC evaluation and management. A selection of intraoperative photos were included in the survey to investigate the prevailing surgical approaches and identify management patterns.
RESULTS
Out of the 267 participants, 38.4% of them are located in Europe. Visual estimation was the predominant approach for evaluating HAPC, although being regarded as the least dependable compared to other techniques. Surgeons who performed more than 40 cases per year were more inclined to use goniometers and had varying degrees of HAPC that were considered acceptable without requiring any correction (P < .001). Out of 58% of respondents, a significant number reported regular utilization of artificial erection tests for all categories of hypospadias. Surgeons with fewer than 10 years of expertise commonly utilized erection test as part of their regular practice. A tourniquet was employed to maintain sufficient intra-corporeal pressure, by134 (50%). 116 participants (43%) inject Saline through the corpora cavernosa through the glans, while 150 (56%) administer saline from the lateral aspect. Moreover, the decision-making process differed based on the intraoperative picture scenarios of mild to moderate penile curvature during erection testing. Contrary to temperatures ranging from 25 to 35, decision-making in cases with less severe degrees of HAPC was uncomplicated.
CONCLUSION
This survey reveals a wide range of surgical practice patterns in the assessment and management of HAPC. To our knowledge, this global survey of HAPC practice is the largest to date and could aid in developing new guidelines in pediatric urology. These findings may also provide a foundation for future prospective multinational studies.
Topics: Humans; Male; Hypospadias; Practice Patterns, Physicians'; Penis; Urologic Surgical Procedures, Male; Surveys and Questionnaires; Health Care Surveys; Internationality; Child; Global Health
PubMed: 38418260
DOI: 10.1016/j.jpurol.2024.02.006 -
Translational Andrology and Urology Jan 2024Peyronie's disease (PD) is a fibrotic disorder of the tunica albuginea that results in penile deformity and/or curvature. Patients usually present complaining of penile... (Review)
Review
Peyronie's disease (PD) is a fibrotic disorder of the tunica albuginea that results in penile deformity and/or curvature. Patients usually present complaining of penile pain, shortening and deformity resulting in dissatisfaction with intercourse. Many patients with PD will present with concomitant erectile dysfunction (ED). This disease is a significant concern for patients as it impacts both sexual function and overall quality of life. While there are several interventions available for PD treatment, inflatable penile prosthesis (IPP) implantation is considered the gold standard approach for those with moderate to severe concomitant ED, refractory to medical therapy. The goal of treatment is to give a man a functionally straight erection. Placement of an IPP alone may achieve this. However, when curvature still exists, several adjunct procedures may be performed to include manual modeling, plication, plaque incision or excision and grafting. Additionally, advanced lengthening procedures may also be used. In this paper we will present a comprehensive review of the adjuvant straightening techniques that can be used during IPP placement in men with PD and refractory ED when curvature still exists. Patient selection is a key predictor of implant success, as is preoperative and postoperative management to optimize overall patient care and satisfaction. These topics along with the different surgical approaches to IPP insertion for PD will also be discussed, including the benefits and shortcomings of each. A flowchart to aid surgeons in their intraoperative decision making based on curvature characteristics and specific patient concerns is presented.
PubMed: 38404553
DOI: 10.21037/tau-23-180 -
Journal of Personalized Medicine Feb 2024The present umbrella review of five systematic reviews and meta-analyses was conducted to investigate the effectiveness of Low-Intensity Extracorporeal Shock Wave... (Review)
Review
Effectiveness of Low-Intensity Extracorporeal Shock Wave Therapy in Erectile Dysfunction: An Analysis of Sexual Function and Penile Hardness at Erection: An Umbrella Review.
The present umbrella review of five systematic reviews and meta-analyses was conducted to investigate the effectiveness of Low-Intensity Extracorporeal Shock Wave Therapy (Li-ESWT) in the treatment of vascular origin Erectile Dysfunction (ED). A search was carried out in the databases of Pubmed, Scopus, Medline, Scielo and Embase. Participants were divided into two groups: an experimental group receiving Li-ESWT and a control group receiving simulated shock waves. The main variable of this study is ED, measured using the International Index of Erectile Function-Erectile Function (IIEF-EF) and the Erection Hardness Score (EHS) scale. The results showed a statistically significant increase in the mean IIEF-EF score in the experimental group. Overall, four out of five articles reported an increase in the EHS score in the Li-ESWT group compared to the placebo. Concerning the treatment parameters, better outcomes were observed with an energy density of 0.09 mJ/mm and the application of 1500-2000 pulses. Additionally, a follow-up of 6-12 months resulted in greater improvement in ED compared to 3 months, although more studies investigating follow-ups beyond 12 months are needed. Obtaining conclusive and clear results is challenging; however, everything indicates that Li-ESWT is an innovative therapeutic alternative for vascular-origin ED due to its low risk and improvement in erectile function.
PubMed: 38392610
DOI: 10.3390/jpm14020177 -
Frontiers in Pharmacology 2024Priapism, defined as a prolonged and often painful penile erection occurring without sexual stimulation or desire, is a common complication in sickle cell disease (SCD),... (Review)
Review
Priapism, defined as a prolonged and often painful penile erection occurring without sexual stimulation or desire, is a common complication in sickle cell disease (SCD), affecting up to 48% of male patients. This condition presents significant clinical challenges and can lead to erectile dysfunction if not properly managed. Current pharmacological treatments for SCD-related priapism are primarily reactive rather than preventative, highlighting a gap in effective medical intervention strategies. A critical factor in developing priapism is the reduced basal bioavailability of nitric oxide (NO) and cyclic guanosine monophosphate (cGMP) in erectile tissues. New prevention strategies should ideally target the underlying pathophysiology of the disease. Compounds that stimulate and activate soluble guanylate cyclase (sGC) emerge as potential therapeutic candidates since these compounds have the property of inducing cGMP production by sGC. This review explores the potential of sGC stimulators and activators in treating priapism associated with SCD. We discuss the advantages of these agents in the face of the challenging pathophysiology of SCD. Additionally, the review underscores the impact of intravascular hemolysis and oxidative stress on priapism pathophysiology in SCD, areas in which sGC stimulators and activators may also have beneficial therapeutic effects.
PubMed: 38384294
DOI: 10.3389/fphar.2024.1357176 -
Archivos Espanoles de Urologia Jan 2024In this article, the associated factors for erectile dysfunction (ED) after radical prostatectomy (RP) were explored, and a clinical risk assessment model was...
OBJECTIVE
In this article, the associated factors for erectile dysfunction (ED) after radical prostatectomy (RP) were explored, and a clinical risk assessment model was constructed.
METHODS
A total of 155 patients who underwent RP in People's Hospital of Hunan Province from November 2020, to November 2021, were selected as the study group. In accordance with the results of International Index of Erectile Function (IIEF-5) at 6 months after surgery, 88 patients were included in the ED group (IIEF-5 <22), and 67 patients were included in the non-ED group (IIEF-5 ≥22). Univariate and multivariate logistic regression analyses were conducted to screen the risk factors for ED after RP, and a risk model was constructed on this basis. In addition, 43 patients with ED after RP and 41 patients with non-ED after RP from January 2022, to January 2023, were included in the test group to evaluate the predictive efficacy of the clinical risk assessment model on the basis of the receiver operating characteristic curve.
RESULTS
The study group had a lower postoperative IIEF-5 score than before surgery ( < 0.001). The incidence of ED after RP in the study group was 56.77% (88/155). Multivariate analysis showed that advanced age (odds ratio (OR) = 1.155), large prostate volume (OR = 1.077), smoking (OR = 5.676), drinking (OR = 3.495), hypertension (OR = 8.079), diabetes (OR = 6.082), low preoperative serum testosterone (T) level (OR = 0.684) and high preoperative serum endothelin-1 (ET-1) level (OR = 1.192) were risk factors for ED after RP ( < 0.05). A risk model was constructed as follows: Z = 0.144 × (age) + 0.074 × (prostate volume) + 1.736 × (smoking) + 1.251 × (drinking) + 2.089 × (hypertension) + 1.805 × (diabetes) - 0.380 × (preoperative serum T) + 0.175 × (preoperative serum ET-1). The area under curve (AUC), sensitivity, specificity and 95% CI of this model were 0.906, 97.70%, 73.20%, and 0.848-0.964, respectively ( < 0.001).
CONCLUSIONS
The clinical risk assessment model constructed on the basis of the above factors provides some references for the scientific prevention and treatment of ED after RP.
Topics: Male; Humans; Infant, Newborn; Erectile Dysfunction; Prostate; Retrospective Studies; Prostatic Neoplasms; Prostatectomy; Risk Assessment; Risk Factors; Diabetes Mellitus; Hypertension; Penile Erection
PubMed: 38374018
DOI: 10.56434/j.arch.esp.urol.20247701.12