Browsing by Author "Mellon, Matthew J."
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Item A single-institution experience with the Optilume Urethral Drug Coated Balloon for management of urethral stricture disease(AME, 2024) Mahenthiran, Ashorne K.; Burns, Ramzy T.; Soyster, Mary E.; Black, Morgan; Arnold, Peter J.; Love, Harrison L.; Mellon, Matthew J.; Urology, School of MedicineBackground: Urethral stricture disease is detrimental to quality of life. The Optilume Urethral Drug Coated Balloon (DCB) offers a solution utilizing a paclitaxel-coated balloon to expand strictures and prevent recurrence. Following the ROBUST trials, it has been proposed that DCB is more effective than conventional endoscopic management for recurrent, small anterior urethral strictures. Our study provides insights into practical applications and outcomes using DCB for urethral stricture disease. Methods: A retrospective review was performed of patients who underwent DCB for urethral strictures at our institution from November 2022 to August 2023 with follow-up evaluated through January 2024. Demographics, stricture characteristics, operative details, and postoperative outcomes were collected. Primary endpoint was need for repeat intervention as determined by symptomatic burden and subsequently postoperative post-void residual if obtained. Secondary endpoint was complication rate. Statistical analysis was conducted using STATA/BE17.0 software to create Kaplan-Meier curves for time to repeat intervention after treatment with DCB. Results: Of 43 patients, 16 had no prior treatment. The other 27 had endoscopic treatment and of this group, 11 also had additional urethroplasty. Stricture etiologies included 20 iatrogenic, 14 idiopathic, 5 radiation-related, 2 inflammatory, and 2 traumatic. Stricture locations were 2 fossa navicularis, 7 pendulous, 17 bulbar, 7 membranous, 3 prostatic, and 7 bladder neck contractures. Mean balloon dilation lasted 8.4±2.7 minutes. All patients had a minimum follow-up of 150 days postoperatively and the mean duration of follow-up for the cohort was 290.3±87.0 days. The average postoperative post-void residual was 33.4±90.6 milliliters. Two patients had immediate complications: 1 with urinary retention after catheter removal requiring suprapubic tube placement and 1 with urinary tract infection requiring antibiotics. Four patients required repeat interventions: 1 endoscopic dilation, 1 graft urethroplasty, and 2 repeat DCB procedures. Mean time to repeat intervention was 203.5±82.6 days, and no patient required repeat intervention within 145 days of initial surgery. Conclusions: DCB offers a safe and less invasive treatment for both treatment-naïve and recurrent urethral strictures with paclitaxel coating to prevent recurrence. Repeat intervention was not required for 90.7% of our cohort within an average follow-up duration of 9 months postoperatively. As DCB grows in clinical use, investigation into its long-term efficacy is justified.Item Impact of obesity on male urethral sling outcomes(Sage, 2020-06-09) Monn, M. Francesca; Jarvis, Hannah V.; Gardner, Thomas A.; Mellon, Matthew J.; Urology, School of MedicineBackground: The impact of obesity on AdVance male urethral sling outcomes has been poorly evaluated. Anecdotally, male urethral sling placement can be more challenging due to body habitus in obese patients. The objective of this study was to evaluate the impact of obesity on surgical complexity using operative time as a surrogate and secondarily to evaluate the impact on postoperative pad use. Methods: A retrospective cohort analysis was performed using all men who underwent AdVance male urethral sling placement at a single institution between 2013 and 2019. Descriptive statistics comparing obese and non-obese patients were performed. Results: A total of 62 patients were identified with median (IQR) follow up of 14 (4–33) months. Of these, 40 were non-obese and 22 (35.5%) were obese. When excluding patients who underwent concurrent surgery, the mean operative times for the non-obese versus obese cohorts were 61.8 min versus 73.7 min (p = 0.020). No Clavien 3–5 grade complications were noted. At follow up, 47.5% of the non-obese cohort and 63.6% of the obese cohort reported using one or more pads daily (p = 0.290). Four of the five patients with a history of radiation were among the patients wearing pads following male urethral sling placement. Conclusion: Obese men undergoing AdVance male urethral sling placement required increased operative time, potentially related to operative complexity, and a higher proportion of obese compared with non-obese patients required postoperative pads for continued urinary incontinence. Further research is required to better delineate the full impact of obesity on male urethral sling outcomes.Item A novel technique for direct visualization of reservoir placement for penoscrotal inflatable penile prostheses using a single incision(Wolters Kluwer, 2018-10) Roth, Joshua D.; Monn, M. Francesca; Shelton, Thomas M.; Mellon, Matthew J.; Urology, School of MedicineIntroduction: We aim to present a modified technique and outcomes of a novel method allowing for direct visualization of the reservoir placement during a penoscrotal inflatable penile prosthesis (IPP). Methods: Out of165 patients who underwent IPP placement from August 2012 to March 2015, 157 underwent a modified technique and comprised the cohort of this study. A Deaver's retractor was placed lateral to the penis and over the pubic bone to allow for direct visualization of the tissues overlying the lower abdomen. After dissecting through the superficial layers, the Deaver's was slowly advanced, allowing for visualization of the fascia, which was incised. Using blunt dissection, a space for the reservoir was created between the bladder and the pubic bone. The reservoir was then placed safely into this space and the Deaver's retractor was removed. Results: The causes of ED in the study cohort included postprostatectomy ED (n = 107), organic impotence (n = 40), Peyronie's disease (n = 3), ED following cystoprostatectomy (n = 2), ED due to spinal cord injury (n = 2), ED resulting from priapism (n = 2), and ED after pelvic injury (n = 1); all of which were refractory to medical management. The median age of study population was 66 years and the mean (standard deviation) operative time was 72.8 (14.7) min. Eighty percent of the procedures were performed on outpatient basis. Complication rates were low (<5%), with four infections, one proximal pump migration, one scrotal hematoma, and one urinary tract infection. Conclusion: The modified technique for placement of the IPP's spherical reservoir under direct visualization through a penoscrotal incision is quick, safe, and effective.Item Predictors of Enucleation and Morcellation Time During Holmium Laser Enucleation of the Prostate.(Elsevier, 2015-08) Monn, M. Francesca; El Tayeb, Marawan; Bhojani, Naeem; Mellon, Matthew J.; Sloan, James C.; Boris, Ronald S.; Lingeman, James E.; Department of Urology, IU School of MedicineObjective To examine predictors of enucleation and morcellation times within a large cohort of men undergoing holmium laser enucleation of the prostate (HoLEP) for benign prostatic hypertrophy. Materials and Methods Preoperative, perioperative, and postoperative clinical characteristics were available from men treated with HoLEP between 1998 and 2013 at Indiana University Health Methodist Hospital. Stepwise linear regression was performed to determine clinical variables which are associated with enucleation and morcellation times. Results We identified 960 patients who underwent HoLEP. Average (range) enucleation time was 65.7 (11-245) minutes and morcellation time was 19.7 (3-260) minutes. History of anticoagulation was associated with a small decrease in enucleation time (P = .013) whereas increasing HoLEP specimen weight was associated with increasing enucleation time (P <.001). History of intermittent catheterization, urinary tract infections (UTI), presence of dense prostatic tissue (colloquially referred to as “beach balls”), and increasing specimen weight were associated with increasing morcellation time (P <.05 each). Having HoLEP performed by a less experienced urologist was associated with longer enucleation and morcellation times. Conclusion Prostate volume is significantly associated with increased enucleation and morcellation times during HoLEP. Additionally, history of UTI and clean intermittent catheterization (CIC) is associated with modest increases in enucleation and morcellation times. Dense enucleated prostate tissue significantly impacts the ability to morcellate effectively. Increasing surgeon experience can significantly improve both enucleation and morcellation efficiency.Item Risk for Clostridium difficile Infection after Radical Cystectomy for Bladder Cancer: Analysis of a Contemporary Series(Elsevier, 2015-12) Liu, Nick W.; Shatagopam, Kashyap; Monn, M. Francesca; Kaimakliotis, Hristos Z.; Cary, Clint; Boris, Ronald S.; Mellon, Matthew J.; Masterson, Timothy A.; Foster, Richard S.; Gardner, Thomas A.; Bihrle, Richard; House, Michael G.; Koch, Michael O.; Department of Urology, IU School of MedicineIntroduction This study seeks to evaluate the incidence and associated risk factors of Clostridium difficile infection (CDI) in patients undergoing radical cystectomy (RC) for bladder cancer. Methods We retrospectively reviewed a single institution׳s bladder cancer database including all patients who underwent RC between 2010 and 2013. CDI was diagnosed by detection of Clostridium difficile toxin B gene using polymerase chain reaction–based stool assay in patients with clinically significant diarrhea within 90 days of the index operation. A multivariable logistic regression model was used to identify demographics and perioperative factors associated with developing CDI. Results Of the 552 patients who underwent RC, postoperative CDI occurred in 49 patients (8.8%) with a median time to diagnosis after RC of 7 days (interquartile range: 5–19). Of the 122 readmissions for postoperative complications, 10% (n = 12) were related to CDI; 2 patients died of sepsis directly related to severe CDI. On multivariate logistic regression, the use of chronic antacid therapy (odds ratio = 1.9, 95% CI: 1.02–3.68, P = 0.04) and antibiotic exposure greater than 7 days (odds ratio = 2.2, 95% CI: 1.11–4.44, P = 0.02) were independently associated with developing CDI. The use of preoperative antibiotics for positive findings on urine culture within 30 days before surgery was not statistically significantly associated with development of CDI (P = 0.06). Conclusions The development of CDI occurs in 8.8% of patients undergoing RC. Our study demonstrates that use of chronic antacid therapy and long duration of antimicrobial exposure are associated with development of CDI. Efforts focusing on minimizing antibiotic exposure in patients undergoing RC are needed, and perioperative antimicrobial prophylaxis guidelines should be followed.Item The Role of Prostate Specific Antigen Monitoring after Holmium Laser Enucleation of the Prostate(AUA, 2019) Abedali, Zain A.; Calaway, Adam C.; Large, Tim; Lingeman, James E.; Mellon, Matthew J.; Boris, Ronald S.; Urology, School of MedicinePurpose: Prostate specific antigen screening for prostate cancer has recently been challenged due to poor sensitivity. In addition to prostate cancer, a number of conditions elevate prostate specific antigen, of which benign prostatic hypertrophy is most common. The objective of this study was to assess the positive predictive value of prostate specific antigen and prostate specific antigen density for prostate cancer risk following holmium laser enucleation of the prostate. Materials and Methods: We queried an institutional review board approved database of holmium laser enucleation of the prostate performed at Indiana University from 1999 to 2018 to identify 1,147 patients with prostate specific antigen data available after holmium laser enucleation. A total of 55 biopsies after enucleation were recorded. Demographics, prostate specific antigen, prostate volume and oncologic details were analyzed. The primary outcome was biopsy proven prostate cancer. Results: A total of 55 patients underwent transrectal ultrasound prostate biopsy for cause after holmium laser enucleation of the prostate. Cancer was identified in more than 90% of biopsied cases. Men with prostate specific antigen above 1 ng/ml at biopsy had a 94% probability of cancer detection and an 80% risk of clinically significant disease. Prostate specific antigen density above 0.1 ng/ml was associated with a 95% risk of cancer and an 88% risk of clinically significant cancer. Prostate specific antigen greater than 5.8 ng/ml or prostate specific antigen density greater than 0.17 ng/ml 2 was universally associated with biopsy proven cancer. Conclusions: Prostate specific antigen and prostate specific antigen density have high positive predictive value for prostate cancer risk after holmium laser enucleation of the prostate. Thresholds for biopsy should be lower than in patients who do not undergo holmium laser enucleation. Those who undergo that procedure and have prostate specific antigen above 1 ng/ml or prostate specific antigen density above 0.1 ng/ml 2 are at higher risk for harboring clinically significant disease and should undergo biopsy. Referring physicians should be aware of these significant risk shifts.Item Sarcoidosis: A rare cause of penile edema(Elsevier, 2022-07-19) Herodotou, Christopher A.; Burns, Ramzy T.; Whaley, Rumeal; Idrees, Muhammad; Mellon, Matthew J.; Urology, School of MedicineReports of penile sarcoidosis are rare in the literature. We describe the case of a male who presented with several months of distal penile swelling and progressive inability to retract the foreskin. Firm, non-tender subcutaneous nodules were palpated near the base of the penis. The patient ultimately underwent penile skin resection, partial scrotal resection, and split thickness skin graft to the penis after failing multiple conservative treatments. Pathology revealed non-caseating granulomatous lesions which in addition to CT chest findings of bilateral hilar adenopathy suggested a diagnosis of penile sarcoidosis.Item Simultaneous percutaneous nephrolithotomy and early endoscopic ureteric realignment for iatrogenic ureteropelvic junction avulsion during ureteroscopy(2015-12) Tayeb, Marawan El; Mellon, Matthew J.; Lingeman, James E.; Department of Urology, IU School of MedicineWe present a case report of successful management of ureteropelvice junction avulsion during ureteroscopy successfully managed with simultaneous percutaneous nephrolithotomy and early endoscopic ureteral realignment.Item The role of urethral ligation after AUS failure and end stage urethra(Springer, 2022-11) Arnold, Peter J.; Soyster, Mary E.; Burns, Ramzy T.; Mellon, Matthew J.; Urology, School of MedicinePurpose To provide our single-center experience with an approach to refractory stress urinary incontinence (SUI) with permanent urethral ligation (PUL) and suprapubic tube (SPT) placement, in hopes of contributing to the limited body of research surrounding this surgical treatment option for patients with end-stage urethra (ESU). Methods All patients undergoing PUL with SPT placement from 01/01/2018 to 04/30/2022 were identified from an institutional database. Institutional Review Board exempt status was granted for the conduct of this study. Patients were seen postoperatively at 1 month and 1 year. If there were any concerns of incontinence, an antegrade urethrogram via the SPT was performed. Descriptive statistics were used to evaluate patients. Results Seven patients underwent PUL with SPT in our timeframe and were included in the study. All patients previously had an AUS placed, and two patients had a urethral sling previously placed. The median follow-up time was 21 months, ranging between 2 and 48 months. Complications included bladder spasms (43%) and continued leakage per urethra (14%). Of the 7 patients, 6 have reported continence through their urethra at their most recent follow-up. Conclusion This initial data suggest that PUL with SPT placement may be a viable surgical approach to treating refractory SUI, especially for patients with ESU who wish to avoid the morbidity associated with more formal supravesical diversion. Further study of this technique and longer follow-up is required to determine its long-term efficacy and tolerability for patients.Item An Uncommon Case of a Traumatic Corporal Cutaneous Fistula(Elsevier, 2019) Monn, M. Francesca; Mellon, Matthew J.; Urology, School of MedicinePenetrating perineal trauma is an unusual urologic injury. Even less common is a delayed presentation. Herein we present the case of a patient with delayed development of a corporal cutaneous fistula 3 months following perineal trauma.