Publications by authors named "Kenneth Peters"

Purpose: Neurogenic lower urinary tract dysfunction (NLUTD) is highly prevalent among patients with neurologic disorders. Some studies have demonstrated that implantable neuromodulation can improve symptoms of NLUTD. We seek to describe our experience with sacral and pudendal neuromodulation in patients with NLUTD.

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Purpose: To assess efficacy and safety of URO-902, an investigational gene therapy expressing the α subunit of the large-conductance Ca-activated K channel, in a phase 2a placebo-controlled trial in women with overactive bladder (OAB).

Materials And Methods: Women, age 40 to 79 years, with OAB and urge urinary incontinence who were refractory to OAB medications were randomized to single-dose URO-902 24 and 48 mg or placebo administered by intradetrusor injection by cystoscopy under local anesthesia. Efficacy end points included change from baseline to week 12 in mean daily micturitions, urgency episodes, urge urinary incontinence episodes, and patient-reported outcomes.

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Introduction: Clitoral priapism is persistent clitoral engorgement without sexual stimulation. Presentation is sparse, and therefore limited treatment options have been investigated.

Aim: We present a case report of a 34-year-old female presenting with persistent nonischemic clitoral priapism 5 years after aggressive clitoral stimulation.

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Background: Surgical management options for lower urinary tract symptoms due to benign prostatic hypertension have remained limited in prostates of large volume. The advent of the Aquablation has created a potential minimally invasive option for treatment in prostates of all volumes. Thus, this study aims to evaluate outcomes and complications of Aquablation in clinical practice based on prostate volume.

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Article Synopsis
  • - The study evaluated the safety and effectiveness of iltamiocel, an autologous muscle cell therapy, for treating stress urinary incontinence (SUI) in women, comparing it to a placebo group.
  • - Results showed no significant difference in the overall reduction of stress incontinence episodes between groups, but iltamiocel was more effective in women with previous SUI surgeries, indicating potential benefits for this specific population.
  • - While the primary endpoint was not achieved, iltamiocel therapy was deemed safe, suggesting further research is needed for women with prior SUI surgery who lack effective treatment options.
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Purpose: SARS-CoV-2 infection can result in genitourinary symptoms, such as frequency, urgency, nocturia, and pain/pressure. In this study, we followed the progression of overactive bladder (OAB) symptoms in patients that reported new or worsening OAB symptoms after coronavirus disease-19 (COVID-19) diagnosis.

Materials And Methods: Individuals from a COVID-19 serology study were invited to participate in a follow-up study.

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The tibial nerve is an established target for neuromodulation in the management of overactive bladder (OAB) and its associated symptoms, including urge urinary incontinence (UUI). Technologies are currently available to deliver tibial nerve stimulation (TNS) through percutaneous devices or through implantable devices. The benefits and safety of percutaneous TNS have led to it as a guideline-recommended therapy.

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Purpose: Interstitial cystitis/bladder pain syndrome (IC/BPS) is a condition characterized in part by urinary urgency, frequency, and pain. There is a strong interest in gathering more data to compare and assess the differences in characteristics based on the presence of Hunner's lesions in patients with IC/BPS.

Materials And Methods: Using a nationwide crowdsource effort, we collected surveys and urine samples from patients with a history of IC/BPS.

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Objective: To improve diagnosis of interstitial cystitis (IC)/bladder pain syndrome(IC) we hereby developed an improved IC risk classification using machine learning algorithms.

Methods: A national crowdsourcing resulted in 1264 urine samples consisting of 536 IC (513 female, 21 male, 2 unspecified), and 728 age-matched controls (318 female, 402 male, 8 unspecified) with corresponding patient-reported outcome (PRO) pain and symptom scores. In addition, 296 urine samples were collected at three academic centers: 78 IC (71 female, 7 male) and 218 controls (148 female, 68 male, 2 unspecified).

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Introduction: Interstitial cystitis/bladder pain syndrome (IC/BPS) manifests as urinary symptoms including urgency, frequency, and pain. The IP4IC Study aimed to establish a urine-based biomarker score for diagnosing IC/BPS. To accomplish this objective, we investigated the parallels and variances between patients enrolled via physician/hospital clinics and those recruited through online crowdsourcing.

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A 45-year-old male with diabetes, hypertension and hyperlipidemia was referred to urology due to persistent symptoms of urinary frequency, urgency, nocturia, erectile dysfunction, and constant pain localized to the bladder, pelvis, and perineal area, 3-4 months after SARS-CoV-2 infection. A bladder biopsy showed urothelial mucosa and submucosa with hemorrhage and fibrin microthrombi in blood vessels. Hydrodistention of the bladder and pelvic floor physical therapy resolved symptoms, though bladder and pain symptoms returned upon reinfection with SARS-CoV-2.

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Introduction: Clinical research can be expensive and time consuming due to high associated costs and/or duration of the study. We hypothesized that urine sample collection using online recruitment and engagement of research participants via social medial has the potential to reach a large population in a small timeframe, at a reasonable cost.

Methods: We performed a retrospective cost analysis of a cohort study comparing cost per sample and time per sample for both online and clinically recruited participants for urine sample collection.

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This is a report of a women who failed 2 surgical repairs of vesicovaginal fistula secondary to refractory bladder spasms. After each surgical procedure - the hysterectomy and subsequent fistula repairs - the patient reported severe bladder spasms refractory to medical management. Our treatment was intradetrusor onabotuliniumtoxinA injections 4 weeks prior to a planned surgical fistula repair.

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Objectives: Tibial nerve stimulation is an effective treatment for overactive bladder (OAB) and has been utilized as an in-person recurring session treatment option for many years. The primary objective of this study was to evaluate the safety and efficacy of a long-term implantable device and the method of utilizing a retrograde approach to place the device (a percutaneous implantable pulse generator [pIPG] with integrated quadripolar electrodes) at the tibial nerve (Protect PNS; Uro Medical Corp.).

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Background: Literature is sparse on COVID-19-associated cystitis (CAC), a novel condition comprising frequency, urgency, and nocturia after COVID-19 infection.

Objective: To determine the incidence of CAC and correlation with SARS-CoV-2 antibody levels.

Design Setting And Participants: This was a retrospective study in which urinary symptoms were scored using the International Consultation on Incontinence Questionnaire-overactive bladder (ICIQ-OAB) at three time points: before the pandemic (January 2020), 2 mo after COVID-19 infection (if applicable), and at the time of the study (May 2021).

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Background: Patients with intractable pain in the pudendal nerve distribution may benefit from pudendal neuromodulation; however, some may have previously undergone pudendal nerve entrapment surgery (PNES), potentially altering nerve anatomy and function.

Aim: We examined pudendal neuromodulation outcomes in patients with prior PNES.

Methods: Patients with a history of PNES and quadripolar, tined pudendal lead placement for urogenital pain were reviewed.

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Vulvodynia is a debilitating disorder which can prove extremely difficult to treat. Neuromodulation is increasingly becoming a frontline therapy in various chronic pain syndromes. We present a relatively simple surgical technique utilizing targeted neuromodulation leading to the successful treatment of vulvodynia.

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Neuromodulation has become a valid therapeutic option for patients with various lower urinary tract disorders. In clinical practice, the most used and recommended neuromodulation techniques are sacral neuromodulation (SNM), pudendal neuromodulation (PN), and percutaneous tibial nerve stimulation (PTNS). There are many theories concerning the mechanism of action of neuromodulation.

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Objectives: The objective of this study was to evaluate our experience using cyclosporine A (CyA) in the treatment of Hunner lesion interstitial cystitis (HLIC).

Methods: Retrospective chart review was performed on patients with HLIC treated with CyA from August 2012 to September 2019. Demographic and clinical variables, number of interstitial cystitis therapies, frequency, nocturia, and bladder pain visual analog scores before and after CyA treatment were collected, as well as the Global Response Assessment (GRA) and the Interstitial Cystitis Symptom Index and Interstitial Cystitis Problem Index.

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Aims: Two phase 2 studies were conducted to assess the efficacy and safety of lidocaine-releasing intravesical system (LiRIS) in patients with interstitial cystitis/bladder pain syndrome (IC/BPS) with (Study 001; NCT02395042) or without, (Study 002; NCT02411110) Hunner lesions (HL).

Methods: Both were multicenter, randomized, double-blind, placebo-controlled, and enrolled women aged ≥18 years. In Study 001, patients were randomized 2:1:1 to LiRIS 400 mg/LiRIS 400 mg, placebo/LiRIS 400 mg, or placebo/placebo for a continuous 28 (2 × 14)-day period.

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Article Synopsis
  • A feasibility study was conducted to evaluate the use of the wireless StimWave® system for treating pudendal neuralgia, showing promising initial results in pain relief.
  • Thirteen patients were reviewed, with 76.9% experiencing over 50% pain improvement after the trial period; some even reported complete relief, while others had varying levels of improvement at follow-up.
  • Complications included lead migration and device malfunction, but overall, the study suggests that this method could be beneficial for patients with persistent pudendal neuralgia.
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Article Synopsis
  • Sacral neuromodulation (SNM) is an effective treatment for urinary urgency incontinence (UUI), and the Axonics® System is the first rechargeable SNM approved for long-term use (15 years).
  • In a study with 129 UUI participants, 93% were considered therapy responders after 2 years, showing significant reductions in UUI episodes and improvements in quality of life.
  • All participants could recharge the device, with 94% finding the recharging process acceptable; results indicate the treatment's effectiveness is consistent across different demographics and severity levels.
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