17 results on '"Porena, M"'
Search Results
2. Laparoscopic Versus Abdominal Sacrocolpopexy: A Randomized, Controlled Trial.
- Author
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Costantini E, Mearini L, Lazzeri M, Bini V, Nunzi E, di Biase M, and Porena M
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- Abdomen surgery, Adolescent, Adult, Aged, Disease-Free Survival, Female, Follow-Up Studies, Humans, Kaplan-Meier Estimate, Middle Aged, Pelvic Organ Prolapse diagnosis, Prospective Studies, Treatment Outcome, Vagina surgery, Young Adult, Gynecologic Surgical Procedures methods, Laparoscopy, Pelvic Organ Prolapse surgery
- Abstract
Purpose: Few randomized, controlled trials have compared standard abdominal sacrocolpopexy and the laparoscopic approach. We tested the hypothesis that laparoscopic sacrocolpopexy could compete with abdominal sacrocolpopexy for pelvic organ prolapse repair., Materials and Methods: This randomized, controlled trial was done to compare laparoscopic sacrocolpopexy and abdominal sacrocolpopexy for pelvic organ prolapse repair in women referred to our tertiary Department of Urology for symptomatic stage 2 or greater pelvic organ prolapse. The primary outcome was quantitative evaluation by the POP-Q (Pelvic Organ Prolapse Quantification) system. Cure was defined as prolapse stage 1 or less, point C/D -5 or less at the apex and at least 7 cm total vaginal length. Secondary outcomes were the complication rate, operative time, intraoperative blood loss, hospital stay and PGI-I (Patient Global Impression of Improvement) scores. The Kaplan-Meier estimator with the log-rank test was used to estimate pelvic organ prolapse recurrence-free survival rates., Results: A total of 200 patients were eligible for study. We compared 60 and 61 patients treated with abdominal and laparoscopic sacrocolpopexy, respectively. At a mean followup of 41.7 months the cure rate was of 100% for both approaches. Kaplan-Meier curves showed that overall pelvic organ prolapse recurrence-free survival was longer following the open approach. Patients treated with laparoscopic sacrocolpopexy showed significantly earlier recurrence (p = 0.030), mostly in the first 12 months after surgery. When evaluating the different compartments, a statistically significant difference was observed between the laparoscopic and abdominal approaches for anterior compartment descensus (11 vs 1, p = 0.004). Statistical results had high internal validity but may not be applicable to other populations or settings., Conclusions: Laparoscopic sacrocolpopexy provides outcomes as good as those of abdominal sacrocolpopexy for anatomical correction but not for anterior pelvic organ prolapse., (Copyright © 2016 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights reserved.)
- Published
- 2016
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3. Botulinum toxin type A in patients with Parkinson's disease and refractory overactive bladder.
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Giannantoni A, Conte A, Proietti S, Giovannozzi S, Rossi A, Fabbrini G, Porena M, and Berardelli A
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- Aged, Female, Follow-Up Studies, Humans, Male, Time Factors, Botulinum Toxins, Type A therapeutic use, Neuromuscular Agents therapeutic use, Parkinson Disease complications, Urinary Bladder, Overactive drug therapy, Urinary Bladder, Overactive etiology
- Abstract
Purpose: In this 6-month followup study we investigated the effect of intradetrusor injection of 100 U botulinum toxin type A in patients with Parkinson's disease and refractory detrusor overactivity., Materials and Methods: Eight patients with Parkinson's disease and detrusor overactivity refractory to anticholinergics were injected with 100 U botulinum toxin type A. Daytime and nighttime urinary frequency, and urinary incontinence episodes were recorded. Patients also completed a standardized quality of life questionnaire on incontinence and a visual analog scale on the impact of bladder problems on daily life activities, and underwent urodynamic assessment, including pressure flow studies. Clinical and urodynamic assessment was performed before, and 1, 3 and 6 months after injection., Results: In all patients 100 U botulinum toxin type A induced decreased daytime and nighttime urinary frequency, a decreased number of urinary incontinence episodes, increased quality of life scores and, as shown by increased maximum cystometric capacity, improved urodynamic findings. In 2 patients with Parkinson's disease post-void residual urine volume developed., Conclusions: Intradetrusor injection of 100 U botulinum toxin type A induced clinical and urodynamic improvement in overactive bladder symptoms that lasted at least 6 months in patients with Parkinson's disease., (Copyright © 2011 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights reserved.)
- Published
- 2011
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4. Pelvic organ prolapse repair with and without prophylactic concomitant Burch colposuspension in continent women: a randomized, controlled trial with 8-year followup.
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Costantini E, Lazzeri M, Bini V, Del Zingaro M, Zucchi A, and Porena M
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- Female, Follow-Up Studies, Gynecologic Surgical Procedures methods, Humans, Time Factors, Urologic Surgical Procedures methods, Pelvic Organ Prolapse surgery, Suburethral Slings, Urinary Incontinence prevention & control
- Abstract
Purpose: We reevaluated and brought up to date the 8-year followup of a previous published, randomized, controlled trial of the impact of Burch colposuspension as a prophylactic anti-incontinence procedure in patients without urinary incontinence who underwent abdominal pelvic organ prolapse repair., Materials and Methods: A total of 66 continent women with pelvic organ prolapse were randomly assigned to abdominal pelvic organ prolapse repair and concomitant Burch colposuspension in 34 (group 1) or pelvic organ prolapse repair alone without an anti-incontinence procedure in 32 (group 2). Primary study end points were the anatomical outcome and changes in incontinence status. Secondary end points were changes in subjective symptoms and quality of life., Results: Median followup was 97 months (range 72 to 134). Three group 1 and 1 group 2 patients were lost to followup. Three group 1 patients had a stage I rectocele and 1 had a stage I cystocele. Four group 2 patients had a stage I rectocele and 3 had a stage I cystocele. Nine of 31 group 1 patients (29%) were incontinent compared with 5 of 31 (16%) in group 2 (p = 0.553). In group 1 all except 1 patient were successfully treated for voiding dysfunction. Storage symptoms had disappeared in 1 patient and de novo storage symptoms had developed in 2 since the previous followup. De novo incontinence developed in 2 group 2 patients after midterm outcomes were reported. Median Urogenital Distress Inventory-6 and Incontinence Impact on Quality of Life-7 scores were improved in all groups at last followup (p 0.0001)., Conclusions: Long-term results cast doubt on whether Burch colposuspension should be done during pelvic organ prolapse repair in continent women., (Copyright © 2011 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights reserved.)
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- 2011
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5. Iatrogenic trapped penis in adults: new, simple 2-stage repair.
- Author
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Zucchi A, Perovic S, Lazzeri M, Mearini L, Costantini E, Sansalone S, and Porena M
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- Adolescent, Adult, Aged, Humans, Iatrogenic Disease, Male, Middle Aged, Urologic Surgical Procedures, Male methods, Young Adult, Penile Diseases etiology, Penile Diseases surgery, Postoperative Complications etiology, Postoperative Complications surgery, Plastic Surgery Procedures methods, Scrotum surgery
- Abstract
Purpose: We present a new, 2-stage functional and cosmetic reconstruction of concealed penis in adults with short-term subjective outcomes., Materials and Methods: Patients with excess penile skin removal, shaft tissue scarring and penile retraction with poor functional and cosmetic results underwent 2-stage repair. At stage 1 after a coronal incision and penile degloving an intrascrotal tunnel was formed and the penis was transposed through the scrotum. Three or 4 zero or 2-zero nonresorbable sutures were applied ventral to the penis, crossing through the entire scrotum to ensure complete scrotal skin adhesion to the penis (penile scrotalization). At stage 2 after 6 to 12 weeks the scrotal skin at the penile base was incised bilaterally to separate the skin around the penis from the remaining scrotal skin (penile descrotalization). Evaluation was scheduled 3, 6 and 9 months postoperatively, and annually thereafter., Results: Ten men with concealed penis underwent this 2-stage penile repair, including 8 who were circumcised and 2 who underwent conservative surgery for penile cancer. Mean +/- SD operative time was 75 +/- 15 minutes for stage 1 and 45 +/- 10 minutes for stage 2. No major intraoperative or perioperative complications occurred except superficial scrotal hematoma in 1 patient. At a median followup of 20 months (range 6 to 72) all men were in satisfactory clinical condition and the median patient satisfaction visual analog score was 97 (range 85 to 100). All patients recovered normal spontaneous erection with regular sexual intercourse 4 to 8 weeks after operation 2., Conclusions: This simple, new 2-stage technique seems feasible and effective, and it is well accepted by patients. Further studies are mandatory to confirm preliminary results., (2010 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights reserved.)
- Published
- 2010
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6. Botulinum toxin A for overactive bladder and detrusor muscle overactivity in patients with Parkinson's disease and multiple system atrophy.
- Author
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Giannantoni A, Rossi A, Mearini E, Del Zingaro M, Porena M, and Berardelli A
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- Adult, Aged, Aged, 80 and over, Female, Humans, Botulinum Toxins, Type A therapeutic use, Multiple System Atrophy complications, Neuromuscular Agents therapeutic use, Parkinson Disease complications, Urinary Bladder, Overactive drug therapy, Urinary Bladder, Overactive etiology
- Abstract
Purpose: Urinary disturbances are common in patients with Parkinson's disease and multiple system atrophy. We investigated the effectiveness and safety of botulinum toxin type A injected into the detrusor muscle in patients with Parkinson's disease and multiple system atrophy who had refractory overactive bladder symptoms and detrusor overactivity., Materials and Methods: All participants underwent clinical and urodynamic assessment, and completed a quality of life questionnaire before botulinum toxin type A treatment, and 1 and 3 months thereafter. Four patients with Parkinson's disease and 2 with multiple system atrophy were enrolled in the study. All patients received 200 U botulinum toxin type A injected into the detrusor muscle at 20 sites under cystoscopic guidance at a single session on an inpatient basis. Outcome measures were clinical assessment (a voiding diary including daytime and nighttime urinary frequency, and episodes of urgency and urge urinary incontinence), urodynamic assessment (including first volume and maximum pressure of uninhibited detrusor contractions, and maximum cystometric capacity) and pressure flow studies., Results: One and 3 months after botulinum toxin type A injection all patients reported that daytime and nighttime urinary frequency had decreased and quality of life scores improved. No patients had further episodes of urgency and urge urinary incontinence during the 5-month followup. Urodynamics showed improvement in all urinary function variables tested. No systemic side effects were recorded during or after treatment. In all patients post-void urinary residual volume increased and intermittent catheterization was required only in those with multiple system atrophy., Conclusions: The new beneficial effect that we report in a small study sample encourages larger trials to confirm botulinum toxin type A injection into the detrusor muscle as an effective and safe treatment for refractory overactive bladder symptoms and detrusor overactivity related to Parkinson's disease and multiple system atrophy.
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- 2009
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7. Visually directed transrectal high intensity focused ultrasound for the treatment of prostate cancer: a preliminary report on the Italian experience.
- Author
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Mearini L, D'Urso L, Collura D, Zucchi A, Costantini E, Formiconi A, Bini V, Muto G, and Porena M
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- Aged, Humans, Italy, Male, Treatment Failure, Prostatic Neoplasms surgery, Ultrasound, High-Intensity Focused, Transrectal
- Abstract
Purpose: High intensity focused ultrasound is a minimally invasive treatment option for prostate cancer. Data from the literature show promising early oncological outcomes and a favorable side effect profile. This study is a preliminary report of the Italian experience (Perugia and Turin) of patients treated with the Sonablate(R)500 high intensity focused ultrasound device., Materials and Methods: Between 2004 and 2007, 163 consecutive men with T1-T3 N0M0 prostate cancer underwent high intensity focused ultrasound with the Sonablate 500. Followup included prostate specific antigen tests at 1 month and then every 3 months after treatment, and a random prostate biopsy at 6 months. Failure was defined according to prostate specific antigen nadir, positive findings on followup biopsy and biochemical failure according to Phoenix criteria., Results: Median patient age was 72 years old, median baseline prostate specific antigen was 7.3 ng/ml, and disease stage was T1 in 44.1%, T2 in 42.5% and T3a in 13.4% of patients. Median followup was 23.8 months. After high intensity focused ultrasound treatment prostate specific antigen decreased to a median nadir of 0.15 ng/ml. Median prostate specific antigen at 3 and 6 months was 0.30 and 0.54 ng/ml, respectively. At 6 months the negative biopsy rate was 66.1%. There was no biochemical evidence of disease in 71.9% overall. On multivariate analysis prostate specific antigen nadir became the only independent predictor of no biochemical evidence of disease and positive biopsy at a cutoff of 0.40 ng/ml., Conclusions: A favorable outcome of high intensity focused ultrasound is associated with lower baseline prostate specific antigen, lower prostate specific antigen nadir, lower Gleason score and lower tumor stage. As with any novel technology long-term data will be required before this technique gains widespread clinical acceptance.
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- 2009
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8. Burch colposuspension does not provide any additional benefit to pelvic organ prolapse repair in patients with urinary incontinence: a randomized surgical trial.
- Author
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Costantini E, Lazzeri M, Bini V, Del Zingaro M, Zucchi A, and Porena M
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- Adult, Aged, Female, Humans, Middle Aged, Postoperative Complications, Statistics, Nonparametric, Surveys and Questionnaires, Treatment Outcome, Urodynamics, Urinary Incontinence complications, Urinary Incontinence surgery, Urogenital Surgical Procedures methods, Uterine Prolapse complications, Uterine Prolapse surgery
- Abstract
Purpose: We evaluated the impact of Burch colposuspension as an anti-incontinence measure in patients with urinary incontinence undergoing abdominal surgery for pelvic organ prolapse repair., Materials and Methods: A total of 47 women with pelvic organ prolapse and urinary incontinence were randomly assigned to abdominal pelvic organ prolapse repair and concomitant Burch colposuspension (24 patients, group A) or pelvic organ prolapse repair alone without an anti-incontinence procedure (23 patients, group B). They were followed up at 3, 6 and 9 months after surgery, and then annually. The primary outcome measures were anatomical outcome and changes in incontinence status as indicated by a bladder diary, the number of daily pads and the stress test. Secondary end points were changes in subjective symptoms and quality of life as measured by the Urogenital Distress Inventory and the Incontinence Impact Questionnaire., Results: In group A 13 of 24 patients (54.2%) were still incontinent after surgery compared with 9 of 23 (39.1%) in group B. The intragroup difference was significant (group A p = 0.003, group B p = 0.0001), but there was no significant intergroup difference (p = 0.459 for A vs B). No significant intergroup difference emerged in anatomical outcome. Urogenital Distress Inventory and Incontinence Impact Questionnaire scores improved in both groups (p = 0.0001) but the intergroup difference was not significant in either questionnaire (p = 0.769 and p = 0.327, respectively)., Conclusions: Burch colposuspension does not provide any additional benefit in pelvic organ prolapse repair in patients with urinary incontinence.
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- 2008
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9. Botulinum A toxin intravesical injection in patients with painful bladder syndrome: 1-year followup.
- Author
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Giannantoni A, Porena M, Costantini E, Zucchi A, Mearini L, and Mearini E
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- Aged, Female, Follow-Up Studies, Humans, Injections, Injections, Intramuscular, Longitudinal Studies, Male, Middle Aged, Pain Measurement, Prospective Studies, Treatment Outcome, Botulinum Toxins, Type A administration & dosage, Cystitis, Interstitial drug therapy, Neuromuscular Agents administration & dosage
- Abstract
Purpose: We evaluated the 1-year efficacy and tolerability of botulinum A toxin intravesically injected in patients with painful bladder symptoms associated with increased urinary frequency, refractory to conventional treatments., Materials and Methods: Three men and 12 women were prospectively included in the study. Under short general anesthesia the patients were given injections of 200 U commercially available botulinum A toxin diluted in 20 ml 0.9% NaCl. Injections were performed submucosally in the bladder trigone and lateral walls under cystoscopic guidance. A voiding chart and the visual analog scale for pain were used, and urodynamics were performed before treatment, and 1, 3, 5 and 12 months later., Results: Overall 13 patients (86.6%) reported subjective improvement at the 1 and 3-month followups. The mean visual analog scale score, and daytime and nighttime urinary frequency were significantly decreased (p <0.05, <0.01 and <0.05, respectively). At the 5-month followup the beneficial effects persisted in 26.6% of cases but increased daytime and nighttime urinary frequency, and an increased visual analog scale score were observed compared to baseline. At 12 months after treatment pain recurred in all patients. Nine patients complained of dysuria 1 month after treatment. Dysuria persisted in 4 cases at the 3-month followup and in 2 at the 5-month followup., Conclusions: Intravesically injected botulinum toxin A is effective for short-term management of refractory painful bladder syndrome. The beneficial effects decreased progressively within a few months after treatment. Thus, repeat injections of the neurotoxin are required for efficacious treatment in patients with the disease.
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- 2008
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10. Botulinum-A toxin injections into the detrusor muscle decrease nerve growth factor bladder tissue levels in patients with neurogenic detrusor overactivity.
- Author
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Giannantoni A, Di Stasi SM, Nardicchi V, Zucchi A, Macchioni L, Bini V, Goracci G, and Porena M
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- Administration, Intravesical, Adult, Botulinum Toxins, Type A pharmacology, Female, Follow-Up Studies, Humans, Male, Neuromuscular Agents pharmacology, Urinary Bladder chemistry, Botulinum Toxins, Type A administration & dosage, Nerve Growth Factor analysis, Nerve Growth Factor biosynthesis, Neuromuscular Agents administration & dosage, Urinary Bladder drug effects, Urinary Bladder metabolism, Urinary Bladder, Neurogenic drug therapy, Urinary Bladder, Neurogenic metabolism
- Abstract
Purpose: We investigated the effects of BTX-A on visceral afferent nerve transmission by measuring bladder tissue NGF levels in patients with neurogenic detrusor overactivity before and after intravesical treatment with BTX-A. We also compared the bladder tissue NGF content with clinical and urodynamic data., Materials and Methods: A total of 23 patients underwent clinical evaluation and urodynamics with detection of the UDC threshold, maximum pressure and maximum cystometric capacity before, and at the 1 and 3-month followups. Endoscopic bladder wall biopsies were also obtained at the same time points. NGF levels were measured in tissue homogenate by enzyme-linked immunosorbent assay (Promega, Madison, Wisconsin)., Results: At 1 and 3 months mean catheterization and incontinent episodes were significantly decreased (p <0.05 and <0.001, respectively). On urodynamics we detected a significant increase in the UDC threshold and maximum cystometric capacity, and a significant decrease in UDC maximum pressure at the 1 and 3-month follow-ups compared to baseline (each p <0.001). At the same time points we detected a significant decrease in NGF bladder tissue content (each p <0.02)., Conclusions: BTX-A intravesical treatment induces a state of NGF deprivation in bladder tissue that persists at least up to 3 months. As caused by BTX-A, the decrease in acetylcholine release at the presynaptic level may induce a decrease in detrusor contractility and in NGF production by the detrusor muscle. Alternatively BTX-A can decrease the bladder level of neurotransmitters that normally modulate NGF production and release.
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- 2006
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11. Intravesical resiniferatoxin versus botulinum-A toxin injections for neurogenic detrusor overactivity: a prospective randomized study.
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Giannantoni A, Di Stasi SM, Stephen RL, Bini V, Costantini E, and Porena M
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- Administration, Intravesical, Adult, Botulinum Toxins, Type A administration & dosage, Diterpenes administration & dosage, Female, Humans, Injections, Intralesional, Male, Middle Aged, Neuromuscular Agents administration & dosage, Neurotoxins administration & dosage, Prospective Studies, Urinary Bladder, Neurogenic physiopathology, Urodynamics, Botulinum Toxins, Type A therapeutic use, Diterpenes therapeutic use, Neuromuscular Agents therapeutic use, Neurotoxins therapeutic use, Urinary Bladder, Neurogenic drug therapy
- Abstract
Purpose: We investigated the effectiveness and safety of intravesical resiniferatoxin (Sigma Chemical Co., St. Louis, Missouri) and botulinum-A toxin injections into the detrusor muscle in a group of spinal cord injured patients with neurogenic detrusor overactivity unresponsive to conventional anticholinergic therapy., Materials and Methods: A total of 25 patients were randomly assigned to receive intravesically 0.6 microM resiniferatoxin in 50 ml of 0.9% NaCl or injections into the detrusor muscle of 300 units botulinum A-toxin diluted in 30 ml 0.9% NaCl. Clinical evaluation and urodynamics were performed at baseline, and at 6, 12 and 18 months after treatment., Results: In both arms there was a significant decrease in catheterization and incontinent episodes, and a significant increase in first detrusor contraction and maximum bladder capacity at 6, 12 and 18-month followup. There were no local side effects with either treatment. Botulinum-A toxin induced a significant decrease in the frequency of daily incontinence episodes (p <0.05), a significant increase in first uninhibited detrusor contraction (p <0.01) in maximum bladder capacity (p <0.01), and a significant decrease in maximum pressure of uninhibited detrusor contractions (p <0.01) compared to resiniferatoxin at 6, 12 and 18-month followup., Conclusions: In spinal cord injured patients with refractory neurogenic detrusor overactivity, intravesical resiniferatoxin and botulinum-A toxin injections into the detrusor muscle provided beneficial clinical and urodynamic results with decreases in detrusor overactivity and restoration of urinary continence in a large proportion of patients. Botulinum-A toxin injections provided superior clinical and urodynamic benefits compared to those of intravesical resiniferatoxin.
- Published
- 2004
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12. Assessment of bladder and urethral sphincter function before and after radical retropubic prostatectomy.
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Giannantoni A, Mearini E, Di Stasi SM, Mearini L, Bini V, Pizzirusso G, and Porena M
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- Aged, Follow-Up Studies, Humans, Longitudinal Studies, Male, Postoperative Care, Preoperative Care, Prospective Studies, Time Factors, Prostatectomy, Urethra physiopathology, Urinary Bladder physiopathology, Urodynamics
- Abstract
Purpose: In a prospective study we analyzed the effects of radical retropubic prostatectomy (RRP) on detrusor and urethral sphincter function by comparing urodynamic status preoperatively with that during longitudinal followup., Materials and Methods: A total of 49 consecutive patients underwent urodynamics with pressure flow studies and Valsalva leak point pressure measurements 3 to 7 days before RRP (baseline), and then 1 and 8 months after surgery. We assessed bladder compliance, detrusor overactivity, detrusor contractility and intrinsic sphincter deficiency (ISD)., Results: There was no significant change in detrusor overactivity at 1 and 8 months of followup. Decreased bladder compliance was observed in 20.4% of patients at baseline, and in 38.7% and 30.6% at 1 and 8 months, respectively. De novo decreased compliance was detected in 18.4% and 10.2% of patients at the same points. Impaired bladder compliance was comparable to that before surgery in 20% of cases. Impaired detrusor contractility was detected in 42.8% of patients at baseline, and in 61.2% (p <0.05) and 42.8% at 1 and 8 months, respectively. De novo hypocontractility was observed in 28.6% and 10.2% of patients at 1 and 8 months, respectively. A strong association between detrusor overactivity and ISD was observed at 1 and 8 months (p <0.01)., Conclusions: Following RRP detrusor hypocontractility and decreased bladder compliance represent de novo transient dysfunction probably due to bladder denervation and an established condition not influenced by the operation. The strong association between overactivity and ISD suggests that stress urinary incontinence increases urethral afferent nerve activity and induces involuntary detrusor contractions.
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- 2004
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13. Pelvic floor muscle behavior during Valsalva leak point pressure measurement in males and females affected by stress urinary incontinence.
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Giannantoni A, Di Stasi SM, Cucchi A, Mearini E, Bini V, and Porena M
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- Electromyography, Female, Humans, Male, Middle Aged, Prospective Studies, Urethra physiopathology, Urodynamics, Muscle Contraction, Pelvic Floor physiopathology, Urinary Incontinence, Stress physiopathology, Valsalva Maneuver
- Abstract
Purpose: We evaluated pelvic floor muscle (PFM) behavior during Valsalva leak point pressure (VLPP) measurement in males and females affected by stress urinary incontinence and investigated whether VLPP results are influenced by PFM contraction., Materials and Methods: A total of 25 females and 14 males underwent surface electromyographic (EMG) recording of PFM activity while performing VLPP. We investigated 2 conditions, VLPP during spontaneous strain (test A), and with simultaneous relaxation of the pelvic floor (test B). We analyzed average EMG activity (microV) at rest and during VLPP in tests A and B, the increasing EMG activity during tests A and B (the difference between average EMG activity during tests A and B and at rest), and the mean duration (seconds) of EMG activity during tests A and B., Results: We detected a significant increase in EMG activity during tests A and B as compared to activity at rest (p <0.0001). Increasing EMG activity during test B was significantly reduced in females (p <0.05) but not in males. During test A patients reporting urinary incontinence showed a significantly lower EMG activity than that of continent patients (p <0.05). A significant reduction in maximum abdominal pressure was detected in test B compared to test A, but there was no difference in VLPP values between tests A and B., Conclusions: PFM activity significantly increases during VLPP measurement. Eliminating muscular contraction of the pelvic floor does not significantly alter VLPP results.
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- 2003
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14. Intravesical capsaicin versus resiniferatoxin in patients with detrusor hyperreflexia: a prospective randomized study.
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Giannantoni A, Di Stasi SM, Stephen RL, Navarra P, Scivoletto G, Mearini E, and Porena M
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- Administration, Intravesical, Adult, Female, Follow-Up Studies, Humans, Male, Prospective Studies, Capsaicin administration & dosage, Diterpenes administration & dosage, Neurotoxins administration & dosage, Urinary Incontinence drug therapy
- Abstract
Purpose: Capsaicin and resiniferatoxin (Sigma Chemical Co., St. Louis, Missouri) administered intravesically are attractive options for treating detrusor hyperreflexia. Because the 2 agents differ in chemical structure and relative potency, possible differences in their clinical and urodynamic effects were investigated in this prospective comparative study., Materials and Methods: A group of 24 spinal cord injured patients with refractory detrusor hyperreflexia were randomly assigned to receive a single dose of 2 mM. capsaicin in 30 ml. ethanol plus 70 ml. 0.9% sodium chloride or 100 nM. resiniferatoxin in 100 ml. 0.9% sodium chloride. Dwell time was 40 minutes with urodynamic monitoring. Urodynamics were performed at baseline before treatment, and after followups of 30 and 60 days. The frequency of daily catheterizations, incontinence episodes and side effects was recorded., Results: There was no significant urodynamic or clinical improvement in the capsaicin arm at 30 and 60 days of followup. In the resiniferatoxin arm the mean uninhibited detrusor contraction threshold plus or minus standard deviation increased from 176 +/- 54 to 250 +/- 107 ml. at 30 days (p <0.05) and to 275 +/- 98 ml. at 60 days (p <0.01). Mean maximum bladder capacity increased from 196 +/- 75 to 365 +/- 113 ml. at 30 days (p <0.001) and to 357 +/- 101 ml. at 60 days (p <0.001). Daily catheterizations and incontinent episodes were significantly decreased at 30 and 60 days of followup. Autonomic dysreflexia, limb spasms, suprapubic discomfort and hematuria developed in most patients who received capsaicin but in none who received resiniferatoxin., Conclusions: Intravesical administration of resiniferatoxin is superior to that of capsaicin in terms of urodynamic results and clinical benefits in spinal cord injured patients and it does not cause the inflammatory side effects associated with capsaicin.
- Published
- 2002
15. Intravesical oxybutynin: mode of action assessed by passive diffusion and electromotive administration with pharmacokinetics of oxybutynin and N-desethyl oxybutynin.
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Di Stasi SM, Giannantoni A, Navarra P, Capelli G, Storti L, Porena M, and Stephen RL
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- Administration, Intravesical, Adolescent, Adult, Diffusion, Electrochemistry, Female, Humans, Male, Middle Aged, Urinary Bladder, Neurogenic physiopathology, Urodynamics, Cholinergic Antagonists pharmacokinetics, Mandelic Acids administration & dosage, Mandelic Acids pharmacokinetics, Urinary Bladder, Neurogenic drug therapy
- Abstract
Purpose: A proportion of patients with detrusor hyperreflexia who are unresponsive to oral oxybutynin often benefit from intravesical oxybutynin instillation. To our knowledge the precise mode of action of this method is obscure., Materials and Methods: In 12 patients with detrusor hyperreflexia who were previously unresponsive to oral and intravesical passive diffusion of 5 mg. oxybutynin we administered 5 mg. oxybutynin orally as well as increased doses of 15 mg. oxybutynin intravesically with passive diffusion and with 15 mA. associated electric current. Each administration mode per patient was associated with an 8-hour urodynamic monitoring session during which oxybutynin and N-desethyl oxybutynin plasma levels, and intravesical oxybutynin uptake were measured., Results: A dose of 5 mg. oxybutynin orally induced no urodynamic improvement with an area under the plasma concentration time curve of combined N-desethyl oxybutynin plus oxybutynin of 16,297 ng./8 hours and an area under the curve ratio of N-desethyl oxybutynin-to-oxybutynin of 11:1. Passive diffusion oxybutynin resulted in 12 mg. oxybutynin intravesical uptake and significant improvement in 3 of 8 urodynamic measurements, although the area under the curve of combined N-desethyl oxybutynin plus oxybutynin was only 2,123 ng./8 hours and the N-desethyl oxybutynin-to-oxybutynin ratio was 1.1:1.0. Electromotive administration of oxybutynin resulted in almost complete intravesical uptake of the 15 mg. dose, significant improvement in all 8 urodynamic measurements and an increased oxybutynin level versus oral and passive diffusion, although the area under the curve of combined N-desethyl oxybutynin plus oxybutynin was 4,574 ng./8 hours and the N-desethyl oxybutynin-to-oxybutynin ratio was inverted at 1.0:1.4. The oral dose of 5 mg. oxybutynin caused anticholinergic side effects in 8 of the 12 patients. Neither intravesical passive diffusion nor electromotive administration caused side effects with an uptake of 12 and 15 mg., respectively., Conclusions: A large proportion of intravesical oxybutynin is sequestered, probably in the urothelium. Intravesical oxybutynin administration confers therapeutic benefits via localized direct action within the bladder wall.
- Published
- 2001
16. Intermittent catheterization with a prelubricated catheter in spinal cord injured patients: a prospective randomized crossover study.
- Author
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Giannantoni A, Di Stasi SM, Scivoletto G, Virgili G, Dolci S, and Porena M
- Subjects
- Adolescent, Adult, Aged, Cross-Over Studies, Disposable Equipment, Equipment Design, Equipment Safety, Female, Humans, Incidence, Male, Middle Aged, Patient Satisfaction, Probability, Prospective Studies, Risk Factors, Urinalysis, Urinary Bladder, Neurogenic etiology, Urinary Catheterization adverse effects, Urinary Catheterization methods, Urinary Tract Infections epidemiology, Spinal Cord Injuries complications, Urinary Bladder, Neurogenic therapy, Urinary Catheterization instrumentation, Urinary Tract Infections prevention & control
- Abstract
Purpose: We compared the safety and patient acceptance of a conventional Nélaton and a prelubricated nonhydrophilic catheter in 18 spinal cord injured patients on intermittent catheterization., Materials and Methods: In a prospective crossover study each catheter was used for 7 weeks and the initial course was randomized. Urinalysis and urine culture were performed at 2, 4 and 7 weeks. Urethral trauma was evaluated by urethral cell count on the surface of each catheter used on the last day of each study period. Patient satisfaction was assessed at the end of the study by a questionnaire using multiple visual analog scales., Results: Urinary tract infection was identified in 12 and 4 patients on a Nélaton and a prelubricated nonhydrophilic catheter (p = 0.03), while asymptomatic bacteruria was identified in 18 and 8 (p = 0.0244), respectively. The mean urethral cell count plus or minus standard deviation on the catheter surface was 6.7 +/- 2.8 x 10(4) and 15.1 +/- 8.9 x 10(4) for the prelubricated nonhydrophilic and the Néelaton catheter, respectively (p = 0.01). The prelubricated nonhydrophilic catheter resulted in a better mean satisfaction score than the Nélaton catheter (2.33 +/- 1.06 versus 4.72 +/- 2.13, p = 0.022). Urethral bleeding was reported in 2 patients during the study period while using the Nélaton catheter., Conclusions: The prelubricated nonhydrophilic catheter is a safe, effective and comfortable option in spinal cord injured patients on intermittent self-catheterization.
- Published
- 2001
17. Biofeedback successfully cures detrusor-sphincter dyssynergia in pediatric patients.
- Author
-
Porena M, Costantini E, Rociola W, and Mearini E
- Subjects
- Adolescent, Ataxia physiopathology, Child, Child, Preschool, Electromyography, Enuresis therapy, Female, Humans, Male, Urinary Bladder Diseases physiopathology, Urodynamics, Ataxia therapy, Biofeedback, Psychology, Urinary Bladder Diseases therapy, Urination Disorders therapy
- Abstract
Purpose: We assessed the efficacy of voiding and bladder biofeedback for achieving perineal synergy and curing symptoms in children with detrusor-sphincter dyssynergia, Materials and Methods: A total of 16 boys and 27 girls 4 to 14 years old with detrusor-sphincter dyssynergia diagnosed by uroflowmetry and electromyography underwent biweekly voiding biofeedback therapy consisting of perineal floor electromyography during uroflowmetry. The 6 patients with enuresis and an unstable bladder also underwent bladder biofeedback training during cystometry. Biofeedback continued until detrusor-sphincter dyssynergia resolved. Followup consisted of electromyography and uroflowmetry 1 month after completing biofeedback training, and telephone interviews after 2 and 4 years., Results: Biofeedback resolved detrusor-sphincter dyssynergia in all children, although the condition disappeared significantly sooner in girls (p <0.02). Secondary enuresis disappeared significantly earlier than primary enuresis (p <0.0001). The 2-year success rate of 87.18% for enuresis decreased to 80% at the 4-year followup., Conclusions: Voiding and bladder biofeedback achieves perineal synergy and cures symptoms in children with detrusor-sphincter dyssynergia
- Published
- 2000
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