Removal of a detached head of the Brooks dilator from the corpora cavernosa during penile prosthesis implantation

INTRODUCTION

Several complications during and after penile implantation have been reported. The most difficult part of the procedure seems to be the dilatation of the corpora, especially in fibrotic cases.

AIM

To report a rare intraoperative complication during dilatation of the corpora and its management.

METHODS

During dilation of the corpora cavernosa with Brooks dilators for the implantation of penile prosthesis, its head was detached and stuck at the tip of the corpus cavernosum. Several trials to remove the head of the dilator using different kinds of clamps were unsuccessful. Finally, an incision was performed to the distal lateral part of the corpora cavernosa and the head of the dilator was removed. Implantation was completed uneventfully.

RESULTS

The patient instructed to inflate the prosthesis and use it for sexual intercourse after 6 weeks. Follow-up was 14 months and the patient is using properly the prosthesis.

CONCLUSIONS

Although this is a very rare complication not previously described, we recommend examination of the dilators before use.

Penile Prosthesis Surgery: A Review of Prosthetic Devices and Associated Complications

INTRODUCTION

Although more invasive than some of the other currently available therapies, penile prosthesis surgery has the advantages of high patient satisfaction rates and avoidance of systemic adverse events in the vast majority of cases.

AIM

This article provides a review of the more widely used implants and some of the more frequently encountered complications of penile prosthesis surgery.

METHODS

A retrospective review peer reviewed publications relevant to the field of penile prosthesis surgery.

MAIN OUTCOME MEASURES

Review of historical milestones and newer penile prostheses, as well as a review of prosthesis surgery complications.

RESULTS

Improved designs and materials have resulted in decreased incidence of mechanical failures or infectious complications while simultaneously simplifying the operation of these devices.

CONCLUSIONS

Penile prosthesis surgery remains an excellent alternative for restoring erectile function to those in whom medical therapies such as phosphodiesterase inhibitors are contraindicated or who have failed more conservative measures.

ORIGINAL RESEARCH—SURGERY: Efficacy and Patient Satisfaction Associated with Penile Prosthesis Revision Surgery

INTRODUCTION

Complications that arise after placement of a penile prosthesis may result in the need for revision surgery. Few contemporary penile prosthesis series have focused solely on describing the efficacy and patient satisfaction associated with penile prosthesis revision surgery.

AIM

To determine the overall success of penile prosthesis revision surgery in providing the patient with a functional implant. Device efficacy and patient satisfaction with penile prosthesis revision surgery will be assessed using psychometrically validated instruments.

MAIN OUTCOME MEASURES

The erectile function (EF) and satisfaction domains of the International Index of Erectile Function (IIEF) were used to quantify the overall efficacy and patient satisfaction with revision surgery.

METHODS

Data were derived from a prospective database of consecutive patients undergoing penile prosthesis revision surgery performed by a single surgeon (B.R.K.). Eleven patients filled out the IIEF prior to surgery and 26 completed it following surgery.

RESULTS

Thirty-nine consecutive patients underwent 55 revision procedures related to a prior penile prosthesis. Thirty-four patients (87%) have a functional implant with a median follow-up of 6.5 months (range 1-42 months). Significant improvements in the overall IIEF, EF domain, and satisfaction domain were seen in those patients studied prior to and following revision surgery. The total IIEF, EF domain, and satisfaction domain of the IIEF for the group of 26 responders were 60.7 +/- 19.3, 26.6 +/- 8.7, and 15.7 +/- 5.6, respectively. Patients with fibrotic corporal bodies scored significantly lower on the EF and satisfaction domains than did any other group.

CONCLUSIONS

Penile prosthesis revision surgery is highly successful in providing men with a functional implant. The prostheses function well and patients are satisfied with their devices. Further study of those men with corporal fibrosis is warranted in order to determine the factors needed to improve their overall satisfaction with revision surgery.

Bladder herniation through suprapubic incision for penile prosthesis

To our knowledge, we present the first case of bladder herniation after insertion of an inflatable penile prosthesis. A 65-year-old man presented with a suprapubic bulge. He had his third inflatable penile prosthesis placed 1 year earlier. He had no voiding complaints but requested surgical intervention because the hernia was cosmetically undesirable. After the hernia sac was opened the majority of the bladder was found within it. The defect was repaired with Gore-Tex mesh and the reservoir replaced. One must consider bladder involvement in ventral hernias after penile prosthesis insertion, and a preoperative cystogram might assist in identifying hernia contents.

Penile prosthesis implantation: surgical implants in the era of oral medication

In patients who are not satisfied with the results of oral agents (phosphodiesterase-5 inhibitors) or in whom oral agents or other medical treatment fails to produce an adequate response, penile prosthesis implantation is an excellent treatment modality for restoring erectile function. Patient/partner acceptance, use, and satisfaction rates of penile pros-theses are better than for many other alternatives including pharmacologic injections. In-flatable penile prostheses are most frequently used and have the highest satisfaction rates. Complications of these multipiece prostheses continue to decline, and patient satisfaction rates, tolerability, and longevity continue to increase.

[Treatment of erectile dysfunction with penile implants]

BACKGROUND

Penile implants are the final step in the treatment of erectile dysfunction. The aim of this study was to evaluate patients treated with penile implants in our department.

MATERIAL AND METHODS

From 1990 to 2002, 37 men with erectile dysfunction were treated with a three-component penile implant (AMS 700). In 2 patients the implant was removed; 2 patients were dead at the time of the study. The remaining group (n = 33) received a questionnaire concerning their penile implants, of whom 27 (82 %) responded. Mean observation time after surgery was 6 years. Mean age at surgery was 50 (27 - 68 years).

RESULTS

Diabetes mellitus, trauma and venous insufficiency were the main reasons (68 %) for dysfunction in this patient group. Five patients had perioperative or early postoperative complications. Nineteen (51 %) were re-operated mainly because of dislocation (n = 5), perforation (n = 4) or mechanical failure (n = 4) of the implant. Twenty (74 %) patients were satisfied after surgery. There was no significant improvement in libido or in the relationship with partners.

INTERPRETATION

Three out of four patients were pleased to have the penile implantation done despite the high reoperation rate.

Multi-institutional outcome study on the efficacy of closed-suction drainage of the scrotum in three-piece inflatable penile prosthesis surgery

Infection is a devastating complication of penile prosthesis surgery that occurs in approximately 2-5% of all primary inflatable penile primary implants in most series. Prevention of hematoma and swelling with closed-suction drains has been shown not to increase infection rate and yield an earlier recovery time. Despite the intuitive advantages of short-term closed-suction drainage in reducing the incidence of postoperative scrotal swelling and associated adverse effects, many urologists are reluctant to drain the scrotum because of a theoretical risk of introducing an infection. In conclusion, this study was undertaken to evaluate the incidence of infection in three-piece penile prosthesis surgery with scrotal closed-suction drainage. A retrospective review of 425 consecutive primary three-piece penile prosthesis implantations was performed at three institutions in New Jersey, Ohio, and Arkansas from 1998 to 2002. Following the prosthesis insertion, 10 French Round Blake (Johnson & Johnson) or, in a few cases, 10 French Jackson Pratt, closed-suction drains were placed in each patient for less than 24 h. All subjects received standard perioperative antibiotic coverage. Average age at implant was 62 y (range 24-92 y). Operative time (incision to skin closure) was less than 60 min in the vast majority of cases. There were a total of 14 (3.3%) infections and three hematomas (0.7%) during an average 18-month follow-up period. In conclusion, this investigation revealed that closed-suction drainage of the scrotum for approximately 12-24 h following three-piece inflatable penile prosthesis surgery does not result in increased infection rate and is associated with a very low incidence of postoperative hematoma formation, swelling, and ecchymosis.

Antibiotic-coated medical devices: with an emphasis on inflatable penile prosthesis

One of the most serious complications associated with the use of the inflatable penile prosthesis is infection. This can lead to significant morbidity for the patient, as well as significant health care costs. A number of methods have been used in attempts at minimizing the infection risk, including applying an antibiotic coating to the medical devise. This review aims to evaluate the effectiveness of these products in preventing clinically significant infections.

Prosthesis culture 6 months after implantation and the effect of haematogenous seeding in a rat model

The aim of this study was to investigate the role of haematogenous seeding in late prosthesis infection. In all, 45 male Wistar albino rats were divided into three equal groups. A small piece of silicone prosthesis was implanted into the scrotum of all rats under sterile condition and antibiotic prophylaxis. In the first group, all silicones were removed after 6 months without any complication and were cultured for bacterial growth. In the second group, a disc, which was saturated with Staphylococcus epidermidis, was inoculated subcutaneously in the legs of the rats in the 6th month, revealing a nodule formation 4-5 days after the inoculation and treated with an appropriate antibiotic after the nodule formation. In the third group, the same disc was inoculated, but all rats were treated immediately from the inoculation time onwards. The silicones of the second and third group were also removed at the end of the 6th month and were cultured to observe the bacterial growth. There was no evidence of prosthesis infection in any of the three groups. In the first group, three cultures were positive and revealed approximately 10 000 colonies of S. epidermidis in two and Proteus mirabilis in the remaining. Three and four cultures were positive in the second and third group, respectively. Low colonies of four different organisms (Escherichia coli, S. aureus, S. epidermidis, Pseudomonas aeruginosa) were identified in these cultures. There was no statistical significance of positive cultures in the three groups. Based on our results, there does not appear to be a true significance of haematogenous seeding on late prosthesis infection.

Cylinder sizing: less is more

In penile prosthesis implantation traditional cylinder-sizing techniques frequently result in penile cylinders that are too long for the corpora cavernosa. This can result in premature cylinder wear leading to cylinder aneurysm or fluid loss. Additionally, in the case of the length expanding Ultrex penile prosthesis, cylinders that are too long can result in an S-shaped cylinder deformity. We describe a cylinder measurement technique that avoids the problem of oversizing.

Factors influencing the outcomes of penile prosthesis surgery at a teaching institution

OBJECTIVES

To evaluate the long-term outcomes of penile prosthesis surgery at a teaching institution.

METHODS

Patients who had penile prosthesis surgery from 1988 to 1999 at a private teaching hospital and the Dallas Veterans Affairs Medical Center were identified and charts abstracted for age at first prosthesis, ethnicity, etiology of impotence, comorbid medical disease, previous treatments, surgeon, type of prosthesis, perioperative complications, social history, and outcome. Patient outcomes were determined either from recent clinical documentation within the prior year or by telephone survey of patients. Frequent implanters were defined as those surgeons who performed more than 10 procedures during the study period. Kaplan-Meier curves were used to evaluate survival for patients and prostheses; statistical significance was assessed by the log-rank test.

RESULTS

A total of 152 patients were identified, 81 patients at the Veterans Affairs Medical Center and 71 patients at the private hospital. A total of 180 procedures were performed by 15 attending surgeons, 4 of whom performed most (n = 132) of these procedures. No statistically significant difference was noted in patient age between the two hospitals. No statistically significant differences were found in survival of the penile prostheses on the basis of a history of smoking, diabetes, hypertension, or coronary artery disease. First prostheses had statistically significant better survival compared with secondary prostheses (5-year rate 71% versus 42%; 10-year rate 60% versus 35%, P = 0.0002). The overall infection rate at final follow-up was 9.9% and 18.8% for primary and secondary prostheses, respectively (P = 0.03). The 5-year survival outcomes with first prostheses for frequent implanters were superior to those of infrequent implanters (70% versus 63%, P = 0.034). Malleable prostheses had fewer complications than three-piece inflatable prostheses (10-year survival rate 87% versus 50%, P = 0.0081).

CONCLUSIONS

Superior penile prosthesis outcomes were achieved with first penile prostheses when implanted by higher volume implanters. Meticulous technique and experience are important in all penile prosthesis surgery; however, outcome analysis emphasizes that the differences in outcomes are most apparent with first prostheses, which represent the best opportunity for the patient to achieve good results.

Antibiotic prophylaxis in urologic prosthetic surgery

The implantation of prosthetic devices is an ever-increasing practice in urologic surgery. The most common devices are penile prostheses, artificial urinary sphincters, synthetic pubovaginal slings, and bone anchors used for pelvic floor reconstruction and incontinence surgery. While their efficacy has been supported over time, infection and rejection are severe complications. Explantation of the entire prosthetic device has been the standard treatment of such complications, often necessitating long-term antibiotics and prolonged recovery before future reimplantation. The dense inflammatory response associated with prosthetic surgery may obliterate tissue planes and further complicate reoperative efforts. These factors support the need for effective antibiotic prophylaxis, with the goal of preventing bacterial seeding of the prosthesis during implantation. Antibiotic regimens should be effective against biofilm-forming bacteria, especially S. epidermidis and P. aeruginosa, and vancomycin should be a mainstay. Prevention of intraoperative infection by treating existing skin and urinary tract reservoirs and employing strict sterile technique cannot be overemphasized. While data is scant, it appears that routine prophylaxis prior to dental procedures, in patients with urologic prostheses, is unwarranted; however, if the patient is immunocompromised or has severe comorbidities, prophylaxis should be employed.

Contemporary aspects of penile prosthesis implantation

PURPOSE

Erectile dysfunction today has a number of effective treatment options. This review was undertaken to examine the contemporary role of penile prosthesis implantation in the treatment of this disorder.

MATERIALS AND METHODS

A MEDLINE search was performed on the topic of penile prostheses and implants. Current literature was reviewed with regard to types of penile implants, issues related to prosthesis implantation, results, and patient/partner satisfaction.

RESULTS

Mechanical failure rates for early penile prostheses, especially the inflatable type, were unacceptably high. Advances in both prosthesis design and implantation techniques have resulted in increased device survival with 5-year actuarial survival rates free of mechanical failure ranging from 86.2 to 93.6%. Recent reviews of implant recipients show 83 and 85% satisfaction and for partners 70 and 76% satisfaction.

CONCLUSIONS

When systemic therapy for erectile dysfunction fails, men have a variety of other options to choose from. Penile prosthesis implantation is an option that is feasible for nearly every man with this disorder. Current device survival rates and patient and partner satisfaction rates are high.

Spontaneous tumescence after implantation of three-piece hydraulic penile prostheses: a short-term experience

We evaluated spontaneous tumescence after penile prostheses implantation in a retrospective study. A total of 32 patients with three-piece hydraulic implants (17 Mentor Alpha I, 15 AMS Ultrex Plus) were enrolled. Consultation, personal interviews and questionnaires for both the patients and their partners provided the necessary information. The average follow-up period was 29 months. In total, 50 % of the patients reported spontaneous tumescence without activation of the implant and one further patient (3%) claimed full rigid spontaneous erections. General satisfaction with the prosthetic result was high at 91%. The following complications arose: one case of prosthesis infection, one case of mechanical failure, one case of cylinder dislocation and two cases of paraphimosis. A possible explanation for spontaneous tumescence after penile prosthesis implantation is the elevated preload of the compressed rather than destructed cavernous tissue. The artificial erection evoked by the prosthesis then takes the form of a normal physiological reaction and/or a good objective ridigity, and could account for the high patient satisfaction rate with three-piece hydraulic implants.

Obtaining rigidity in total phalloplasty: experience with 35 patients

PURPOSE

The combination of a neourethra and erection prosthesis in a single neophallus in the female-to-male transsexual remains a challenge. The outcome reported in the literature is disappointing. We report our experience with 35 patients.

MATERIALS AND METHODS

Between August 1996 and December 2001, 35 patients underwent implantation surgery. A 1-piece hydraulic Dynaflex prosthesis (American Medical Systems, Minnetonka, Minnesota) was used in 10 patients, while a 3-piece hydraulic CXM and CX (American Medical Systems) prosthesis was placed in 9 and 16, respectively. The 1-piece model was withdrawn from the market in 1997. Thereafter a 3-piece prosthesis was implanted.

RESULTS

Of 10 patients in the 1-piece group prosthesis implantation was uneventful in 8. In 2 patients with technical failure the prosthesis was replaced, including 1 in whom the new prosthesis was removed due to infection and successfully replaced by a 3-piece prosthesis. To date at a mean followup of 3.5 years 9 patients have a 1-piece hydraulic prosthesis in place. In the 3-piece prosthesis group of 25 patients implantation was uneventful in 20. In 1 patient infection and partial necrosis of the neophallus developed, 2 had infection, in 1 a cylinder perforated the tip of the phallus and in 1 technical failure occurred. Of the latter 4 patients the prosthesis was replaced successfully in 2 patients, while the other 2 are on the waiting list. The patient with partial necrosis of the phallus is no longer a candidate for an erection prosthesis. To date at a mean followup of 1.8 years 23 patients have a 3-piece hydraulic prosthesis in place. A single patient in the 1-piece group has a 3-piece CX prosthesis.

CONCLUSIONS

Good results were observed after implantation of the Dynaflex prosthesis in patients who underwent total phalloplasty. This model is no longer available today. For the more complex 3-piece CX and CXM prostheses implantation results are comparable to those of the 1-piece model.

An unusual case of penile augmentation: subcutaneous stone implantation

Different techniques for penile augmentation have been published. We report a 45-year-old man who had undergone a subcutaneous penile stone implantation for enlargement, which is the first published report to our knowledge.

Penile prosthesis implantation and infection for Sexual Medicine Society of North America

Penile prosthetics have developed over the past three decades into an effective treatment for erectile dysfunction with high reliability and patient satisfaction rates. The morbidity of these devices is principally limited to mechanical malfunction and the most feared complication of prostheses infection. Most penile prosthesis infections are caused by gram positive skin contaminations such as Staphylococci. The signs and symptoms of these infections may be difficult to identify in early stages, but late infections may lead to tissue loss and poor prognosis for prosthesis replacement. Treatment of penile prosthesis infections is best carried out with a salvage technique including aggressive lavage and prosthesis replacement. The success of this technique is salvage of prosthesis and return to function in more than 80% of cases. While penile prosthesis infection continues to be a dreaded complication, early diagnosis and aggressive surgical treatment may salvage the majority of these implants.

Penile prosthesis in the organ transplant recipient

OBJECTIVES

To determine whether pelvic organ transplant recipients are at a higher risk of developing complications after placement of a penile prosthesis relative to those receiving a penile prosthesis who did not undergo pelvic organ transplantation.

METHODS

Two hundred eleven men underwent placement of a penile prosthesis by a single urologist at our institution between July 1994 and March 2000. Of these, 46 patients had undergone pelvic organ transplantation before placement of the penile prosthesis. The average time from transplantation was 43 months. The average follow-up after prosthesis placement was 23 months. These patients were monitored for various complications, including infection, malfunction, autoinflation, and injury to the prosthesis. They were compared with a cohort of men who had had a prosthesis placed but had not received pelvic organ transplantation.

RESULTS

The overall complication rate was significantly higher in the transplant patients (22%) than in the nontransplant patients (7.9%) receiving prostheses (P <0.01). Infection was seen in 2 transplant patients (4.3%) and in 7 nontransplant patients (4.2%) (P <1). Malfunction occurred in 4 of the transplant patients (8.7%) and 6 of the nontransplant patients (3.6%) (P <0.2). In those patients with a prosthesis malfunction, 9 of 10 involved a three-piece prosthesis. All four malfunctions in the transplant group occurred in three-piece prostheses. The difference in the rate of malfunction was statistically significant (P <0.001) when comparing the three-piece prosthesis in the transplant and nontransplant patients (P <0.001). Surgical injury to the retroperitoneal reservoir occurred in 4 transplant patients (8.7%) (all with three-piece prostheses) and in none of the nontransplant patients (P <0.001).

CONCLUSIONS

The risk of infection after insertion of penile prostheses in patients with pelvic organ transplantation was similar to that in nontransplant patients. The risk of malfunction and injury to the prosthesis (three-piece) was higher in transplant patients. The overall complication rate was significantly higher in patients after transplantation and can be attributed to the reservoir complications related to three-piece prostheses. In patients with a prosthesis that did not have a retroperitoneal reservoir, no significant difference in the overall complication rate was observed. Pelvic organ transplant recipients in whom traditional conservative therapy for erectile dysfunction fails should be considered candidates for penile prosthesis placement. However, three-piece prostheses should be avoided, as these patients are best served with prostheses that do not require a retroperitoneal reservoir.

[Penile implants]

Many patients presenting with erectile dysfunction have been successfully treated with techniques mentioned earlier in this issue. However patients with an insufficient response are still candidates for the treatment with penile implants. For this reason it is mandatory to know about the indications, the systems and the operative techniques of penile implants. In a time of decreasing numbers of implant surgery this method still remains a valuable tool for the therapy of erectile dysfunction.

The role of penile prosthetic surgery in the modern management of erectile dysfunction

The management of erectile dysfunction looks set to be revolutionised with the introduction of effective oral therapies. There will remain, however, some men who do not respond to conservative measures. This article reviews the important role of penile prosthetic surgery as a treatment option in these patients.

Management of prosthesis infections in urologic surgery

Prosthetic devices are a cornerstone of urologic surgical care. The most disastrous complication of these surgical procedures is infection. The prevention, identification, and management of infections are critical to maintaining functional urologic prosthetic devices. Although the incidence is low, rapid identification of infections once they occur and proper management with antibiotics, surgical intervention, irrigation, and salvage procedures can maintain the function of urologic prosthetic devices despite clinical infection.

Penile implants in erectile impotence. The importance of clinical experience on outcome

PURPOSE

We assessed maximum patient and partner acceptance and satisfaction by informed preoperative prosthesis selection.

MATERIALS AND METHODS

Six months to 5 years after penile prosthesis implantation, 71 men and partners were interviewed personally. Evaluation was focused on delineating not only the etiologic factors but also factors most likely to affect prosthesis recommendation and contribute to prognosis.

RESULTS

Overall, 94% of the patients and 95% of the partners were satisfied, and 90% of these believed that they had equal erections to previously without the implant, and 81% reported an improvement in nonsexual relations with their partners after the device was implanted. 83 and 17% of the patients said they had increased or had no change in sexual desire, respectively. No one had a decrease in sexual desire. 86% of all the patients believed that their orgasm was improved. 89% of the patients were completely satisfied with the fit of their clothes after prosthesis implantation. 93% of the patients reported good to excellent emotional adjustment to the prosthesis and the prosthesis produced a positive change in self-esteem in 94% of all the patients.

CONCLUSIONS

A detailed assessment of patient-partner expectations is essential in order to be able to predict more accurately which patients will be best suited to the implant and which may need either concurrent counseling or preimplant education. A team was formed in which urologists and psychologists worked together, provided comprehensive information on several personality variables of interest in treatment planning and postoperative satisfaction. Our results clearly demonstrate that not only patient preference but also clinical data are important factors in enhancing patient and partner satisfaction.