Urethral Profile Research Articles

The Visualized Urethral Mobility Profile in Stress Urinary Incontinence Described by Four-Dimensional Transperineal Ultrasound.

To describe the urethral mobility during urine leaking in stress urinary incontinence (SUI) by transperineal ultrasound (TPUS) with urethral mobility profile (UMP) analysis. This was a prospective study of 380 women who had a cough stress test (CST) with TPUS. UMP software automatically placed six equidistant points from the bladder neck (Point 1) to the external urethral meatus (Point 6) and determined their x and y coordinates relative to the symphysis pubis. Urethral mobility vector of Points 1-6 (Vectors 1-6) and the distance between the six points and the symphysis (Dist. 1-6) were calculated and compared between the two groups. The visualized UMP was created by reproducing the positions of the six points at rest and on Valsalva. Valid data of 188 women with SUI and 174 continent women were analyzed. The mean age of all 362 women was 49.3 years. Mean body mass index in the SUI group was significantly increased (23.8 vs 22.2 kg/m2 , P < .001). During CST, Vectors 1-6 and Dist. 2-6 were significantly increased (all P < .005) in the SUI group. The UMP showed the mid-urethral rotated down around the symphysis pubis. The upper urethral profile in the two groups was similar. But the gap between the mid-urethra and the symphysis was wider in the SUI group. The visualized UMP illustrated the mid-urethral hypermobility in SUI by showing a wider gap due to the unstable connection between the mid-urethra and the symphysis pubis.

Three-Dimensional Urethral Profilometry-A Global Urethral Pressure Assessment Method.

Background: To present a new method of urethral pressure examination, and to evaluate diagnostic capabilities of three-dimensional profilometry, as an alternative to classical urethral profile (UPP). Using five channel catheters and dedicated software, a global urethral pressure image is obtained. The method eliminates the main limitation of classical urethral profilometry, where the catheter orientation determines the pressure picture limited to only one point in the urethral circumference; we observed up to 50% differences in pressure measures depending on the point of urethral circumference where the measurement was taken. Methods: This is a preliminary study containing a method presentation and analysis of the use in varied clinical cases of either healthy patients or patients with lower urinary tract symptoms (LUTS). The article includes a technique and equipment description and a full evaluation of selected cases, including three-dimensional urethral pressure distribution graphics. Results and Conclusions: Three-dimensional profilometry compared to the classical technique is comparable regarding the time, cost, technical difficulty and patient discomfort. At the same time, we obtained much more data on the urethral pressure and its distribution. The results are easy to interpret due to the 3D movable graphics created automatically by the dedicated software.

Valsalva urethral profile (VUP): A urodynamic measure to assess stress urinary incontinence in women.

We aimed to assess the value of the Valsalva urethral profile (VUP) in case of stress urinary incontinence (SUI). Six hundred and ninety-four women without pelvic organ prolapse were included in this prospective monocentric study. SUI was diagnosedfrom symptoms using the International Continence Society definition, and severity using two validated questionnaires (USP and ICIQ-SF). The urodynamic parameters studied were maximal urethral closure pressure (MUCP) and functional length (FL). Both were performed at rest, during a Valsalva maneuver (v-MUCP and v-FL) and again at rest. Correlation analyses and ROC curves were used to assess the value of the clinical and urodynamic measurements. In our population, based on the questionnaires, 172 (24.8%) women were diagnosed with pure SUI on symptoms, 71 (10.2%) with urgency urinary incontinence and 392 (56.5%) with mixed urinary incontinence; 59 (8.5%) women were continent. The v-MUCP was the most correlated parameter to the severity of SUI (ρ: -0.63) and the most predictive of SUI risk, with a threshold value of 35 cm H2 O (Se = 0.82, Sp = 0.86). The v-FL was significantly shortened in case of SUI. The v-MUCP and v-FL are global measurements of urethral resistance during stress. With a threshold value of 35 cm H2 O, the v-MUCP was the most discriminating parameter for the diagnosis of SUI, with a good reliability.

Clinical significance of anatomical urethral length on stress urinary incontinence women.

ObjectiveTo evaluate the association between the length of the female urethra and urodynamic study (UDS) parameters in patients presenting with stress urinary incontinence (SUI).Patients and methodsWe retrospectively enrolled 391 women who underwent a transobturator adjustable tape sling implantation for the management of SUI between April 2009 and March 2016. All patients underwent a physical examination and UDS. Filling cystometry data that were evaluated included the Valsalva leak point pressure, and the cough leak point pressure. The maximal urethral closure pressure, the functional urethral length (FUL), and the length of the continence zone (LCZ) were measured using the urethral profile obtained from the UDS. The anatomical urethral length (AUL) was measured intraoperatively using a Foley catheter. We calculated the LCZ/FUL ratio to determine the anatomical continence length for this study.ResultsWe noted that 299 patients completed the study. The mean AUL was 26.25±3.59 mm. The mean FUL and LCZ were 41.37±15.05 mm and 24.15±13.90 mm, respectively. The mean LCZ/FUL was 0.57±0.19. Using the Pearson correlation coefficient, we observed that the AUL showed a correlation with the FUL (0.168, P=0.034), the LCZ (0.212, P=0.007), the LCZ/FUL ratio (0.190, P=0.016), the Valsalva leak point pressure (0.223, P=0.005), the cough leak point pressure (0.215, P=0.006), and the maximal urethral closure pressure (0.178, P=0.043).ConclusionOur results show that the AUL in women is associated with UDS parameters relating to SUI.

Urodynamic assessment of bladder and urethral sphincter function before and after robot-assisted radical prostatectomy

IntroductionAffectation of the bladder after open prostatectomy is demonstrated. Decrease in bladder capacity and bladder compliance, detrusor hyper-or hypo-activity and voiding dysfunction are observed. We propose to investigate the effects of robotic surgery on bladder and sphincter function through the comparative study of preoperative and postoperative urodynamic values 3months after prostatectomy. Material and methodsProspective study of 32consecutive patients undergoing robotic prostatectomy. They all underwent urodynamic study one month before the intervention and 3months after the radical prostatectomy. ResultsTwenty-five percent of patients undergoing robotic prostatectomy showed detrusor hyperactivity accompanied by a decrease in bladder compliance of 30.2 to 21.8ml/cmH2O. Urethral profile showed diminished functional length of 67 to 44mm and decreased maximum urethral pressure of 48.5 to 29.3cmH2O. After robotic prostatectomy 21.8% of patients had detrusor hypoactivity, obstruction decreased between 28.1 and 12.5%. ConclusionsDecreased bladder compliance, detrusor hypo- or hyperactivity and obstruction improvement observed in the study of the flow pressure have been associated with sphincter involvement. It is part of the complex of lower urinary tract dysfunction that occurs after robotic prostatectomy.

Valoración urodinámica de la función vesical y esfinteriana antes y después de la prostatectomía radical asistida por robot

IntroductionAffectation of the bladder after open prostatectomy is demonstrated. Decrease in bladder capacity and bladder compliance, detrusor hyper-or hypo-activity and voiding dysfunction are observed. We propose to investigate the effects of robotic surgery on bladder and sphincter function through the comparative study of preoperative and postoperative urodynamic values 3months after prostatectomy. Material and methodsProspective study of 32consecutive patients undergoing robotic prostatectomy. They all underwent urodynamic study one month before the intervention and 3months after the radical prostatectomy. ResultsTwenty five percent of patients undergoing robotic prostatectomy showed detrusor hyperactivity accompanied by a decrease in bladder compliance of 30.2 to 21.8ml/cmH2O. Urethral profile showed diminished functional length of 67 to 44mm and decreased maximum urethral pressure of 48.5 to 29.3cmH2O. After robotic prostatectomy 21.8% of patients had detrusor hypoactivity, obstruction decreased between 28.1% to 12.5%. ConclusionsDecreased bladder compliance, detrusor hypo- or hyperactivity and obstruction improvement observed in the study of the flow pressure have been associated with sphincter involvement. It is part of the complex of lower urinary tract dysfunction that occurs after robotic prostatectomy.

Long-Term Results of Artificial Urinary Sphincter for Women with Type III Stress Urinary Incontinence

BackgroundThe use of the artificial urinary sphincter (AUS) in women is limited. ObjectiveTo analyse long-term results and mechanical survival of the AUS (AMS 800; American Medical Systems, Minnetonka, MN, USA) in women with stress urinary incontinence (SUI) due to intrinsic sphincter deficiency (ISD). Design, setting, and participantsWomen with SUI who were treated between January 1987 and March 2007 were included in this prospective study. Only women with low closure pressure at urethral profile and negative continence tests, indicators of severe ISD, were included. InterventionsAn AUS was implanted. The surgical technique was modified in 1999, involving opening the endopelvic fascia on both sides and dissection in contact with the vaginal wall. Outcome measurements and statistical analysisAssessment of complications was made pre- and postoperatively and continence status was based on pad usage. Kaplan-Meier survival curves were used to calculate mechanical survival of the device. Student t test and the chi-square test were used to compare continence and complication rates. Results and limitationsA total of 376 AUS were implanted in 344 patients, whose mean age was 57 yr. The mean follow-up, plus or minus standard deviation, was 9.6±4.0 yr. At last follow-up, postoperative continence rates, assessed as fully continent (no leakage), socially incontinent (some drops but no pad), or incontinent (one pad or more), were 85.6%, 8.8%, and 5.6%, respectively. The 3-, 5-, and 10-yr device survival rates were 92.0%, 88.6%, and 69.2%, respectively. The mean mechanical survival was 176 mo (14.7 yr). Three risk factors for AUS survival were the number of previous incontinence surgeries, the presence of neurogenic bladder, and simultaneous augmentation enterocystoplasty. Principal limitation of the study is the absence of validated incontinence questionnaire. ConclusionsThe AUS provides excellent outcome in women with ISD, with low explantation rate and very good device survival.

Urodynamic characteristics of the modified orthotopic ileal neobladder

Radical cystectomy is the method of choice in management of muscle invasive, organ-confined tumors of the bladder (T2-T4, N0-Nx). The most frequent continent orthotopic urinary diversion after radical cystectomy is the ileal neobladder. A modified technique consists of using a shorter segment of the terminal ileum than the standard technique, around 30 cm. The aim of this study was to determine the urodynamic characteristics of the orthotopic ileal neobladder created by a modified technique. In this prospective clinical study we analyzed the urodynamic parameters of 24 patients who had underwent radical cystectomy with orthotopic urinary diversion by ileal neobladder created using a modified technique. In all the patients we performed invasive and noninvasive urodynamic investigations 12 months after the operation. The urethral pressure profile parameters analyzed were maximal urethral pressure, maximal urethral closure pressure and the functional urethral profile length. The average age of the patients was 63 (49-73) years, 90% were males and 10% were females. The median length of the shorter segment of the terminal ileum was 28 (range 22-35) cm. Prior to enterocystometry and uroflowmetry postvoid residual (PVR) urine was measured by a urethral catheter. The median PVR was 16.7 (0-140) mL. The median enterocystometric capacity was 396 (range 372-532) mL. The median end filling pouch pressure was 27.6 (range 20-70) cmH2O. The median maximal flow of urine was 22.1 (range 9.7-39.5) mL/s and the average flow of urine was 9.61 (range 3.6-17.6) mL/s. Flow time in the analyzed group was 47.5 (range 22-119) s. The median maximal urethral pressure was 54 (range 12-101) cmH2O, maximal urethral closure pressure 36.6 (range 6-91) cmH2O. Functional urethral profile length was 14.9 (range 4-37) mm. An ileal orthotopic pouch created by a modified technique using a shorter segment of the terminal ileum after 12 months presents with urodynamic characteristics similar to the native bladder.

Transobturator adjustable tape (TOA) in female stress urinary incontinence associated with low maximal urethral closure pressure

To determine the success rate of transobturator adjustable tape (TOA, Agency for Medical Innovations, A.M.I., Austria) in stress urinary incontinent patients with maximal urethral closure pressure (MUCP) < or =20 cm H(2)O compared to those with MUCP >20 cm H(2)O. In this retrospective study, all female patients with a diagnosis of stress urinary incontinence underwent TOA, from September 2005 to August 2007. All patients had preoperative multichannel urodynamic tests (cystometry, urethral profile and uroflowmetry). During September 2008, patients were contacted by telephone and the validated short forms of the Urogenital Distress Inventory (UDI-6) questionnaire and the Incontinence Impact Questionnaire (IIQ-7) were administered. The chart review identified 146 patients (125 with MUCP >20 cm H(2)O and 21 with MUCP < or =20 cm H(2)O) who had undergone TOA and who met the inclusion criteria. Of these, 121 patients (82.9%) were contacted by telephone. Results showed a very good quality of life (score 0-7 in the IIQ-7) in 95.9% of patients. Only two (1.6%) patients had persistent significant urine leakage related to physical activity. In the MUCP < or =20 cm H(2)O group, 90% of patients could be considered as being very satisfied, with a very good quality of life. With the TOA procedure, the obturator route could be used to treat patients with urinary incontinence and also with low MUCP.

Better Compliance Contributes to Better Nocturnal Continence With Orthotopic Ileal Neobladder Than Ileocolonic Neobladder After Radical Cystectomy for Bladder Cancer

To investigate, in a randomized controlled study, the degree of continence after the creation of orthotopic ileocolonic and ileal neobladders after cystectomy and to explore a possible mechanism for the difference in continence between these 2 types of orthotopic neobladder. From 2003 to 2007, 71 male patients underwent orthotopic lower urinary tract reconstruction with either an ileocolonic or ileal neobladder after radical cystectomy. The degrees of continence and voiding patterns were individually evaluated using urodynamic examinations and a detailed patient questionnaire. The abnormal upper tract was evaluated using intravenous urography and ultrasonography. Complete daytime continence was achieved in 90.9% and 89.4% of the patients and functional nocturnal continence 48.5% and 76.3% of patients in the ileocolonic neobladder and ileal neobladder groups, respectively. The urodynamic data showed that the initial volume of both the ileocolonic and the ileal neobladder appeared to not be significantly different statistically, although the compliance of the ileocolonic neobladder was lower than that of the ileal neobladder (P < .05). No difference was found in the parameters such as flow rate, urethral profile length, maximal urethral pressure, or neobladder neck pressure between the 2 neobladder types. Although the ileocolonic and ileal neobladders can both achieve a large initial volume, the ileal neobladder has an advantage in the aspect of obtaining satisfactory nocturnal continence because of its greater compliance compared with that of the ileocolonic neobladder.

A canine model of irreversible urethral sphincter insufficiency

To develop a canine model of external urinary sphincter insufficiency by creating irreversible damage to the sphincter, because there is a need for a reliable and reproducible large animal model for the study of stress urinary incontinence (SUI) caused by deficient sphincter function. About a quarter of the total external sphincter muscle was removed microsurgically from seven female dogs; three age-matched dogs served as normal controls. The dogs had standard urodynamic and radiographic studies before and at 1, 2, 3, 4 and 7 months after surgery. Three dogs were killed at 4 months and four at 7 months after surgery for tissue analyses. The interventions produced a consistent outcome. Urodynamic studies showed a significant and sustained decrease in sphincter function, which included a static urethral pressure profile, stress urethral profile and detrusor leak-point pressure. Furthermore, in vivo pudendal nerve stimulation and organ-bath studies of the retrieved tissue strips confirmed the loss of sphincter tissue function. Histologically, absence of functional sphincter muscle was evident in the damaged sphincter region. These results show that a reliable and reproducible canine model of irreversible sphincter insufficiency can be created by microsurgical removal of sphincter muscle tissue. This model of external sphincter insufficiency could be used for evaluating methods (e.g. cell therapies) for treating SUI.

Experimental study of urodynamic changes after ovariectomy in 10 dogs

The urodynamic changes in 10 bitches up to 18 months after they had undergone ovariectomy were investigated. There were significant decreases in the maximum urethral closure pressure, the functional urethral...

Comparison of the urethral properties of the female guinea pig and rat

The main focus of this study was to profile and compare urethral function in the female guinea pig and rat, and to characterize urodynamically distinctive patterns in the micturition cycle of the two species. This exercise aimed to investigate potential species-related differences and determine a suitable animal model for the human urethra. Female Dunkin-Hartley guinea pigs (400-500 g) and Sprague-Dawley rats (200-300 g) were used throughout the study. For in vitro experiments urethral rings were suspended vertically for isometric tension recording in 5 ml organ baths and drugs (phenylephrine 10(-4) M and carbachol 10(-4) M) were applied directly to the bathing solution. In vivo urethral pull-through and urodynamic studies were performed under urethane anesthesia, and phenylephrine (200 microg/kg) was administered during urethral pull-through experiments via the intravenous (i.v.) route. Urethral, bladder and arterial pressures, and external urethral sphincter electromyographic (EMG) spike activity were recorded simultaneously throughout. Organ bath studies coupled with in vivo pull-through experiments produced urethral profiles with distinct regional variations for both species. Urodynamic studies with the urethral probe fixed in the high pressure zones of the proximal urethra produced similar recordings in both species during bladder filling and marked differences during micturition. The guinea pig showed complete sphincteric inhibition immediately prior and during micturition as also seen in the human, whereas the rat exhibited high frequency bursts in EMG activity at this stage in the cycle. The EMG activity seen in the rat during micturition is presumably necessary for efficient voiding, thus the guinea pig is a more suitable comparative model for the human in relation to urethral properties during micturition.

Suburethral sling inserted by the transobturator route in the treatment of female stress urinary incontinence: Preliminary results in 117 cases

Objective Assesment of the transobturator out–in technique in the treatment of female urinary incontinence. Study design Obtape, a non-woven, 5% polypropylene tape was inserted via the transobturator route in patients suffering from stress or mixed urinary incontinence. From 1 February 2003 to 30 April 2004 117 patients have been operated. Mean age was 55 years (37–82). Follow-up range from 7 to 22 months (median follow-up time 16.3 months). All patients were assessed before surgery by clinical gynaecological examination and an urodynamic workup (postvoid residual urine, flowmetry, voiding urgency thresholds and urethral profile). Results There were no major complications and no deaths. There were six (5.1%) minor intraoperative problems and three (2.5%) tape erosions. The subjective level of complete and partial patient satisfaction was 92.3% (108 patients) and 4.2% (5 patients), respectively. Four patients (3.4%) felt that the situation was unchanged. No patients felt that their situation had deteriorated (Table 4). There is a concern in operating the subgroup of patients suffering from low MUPC with dysuria as the cure rate is very low. Conclusions Obtape ® transobturator tape is a safe, simple and rapid procedure for treating female stress urinary incontinence, avoiding the major risks of the retropubic approach. Evaluation of the results after a longer follow-up period is necessary to confirm the superiority of this technique.

Correlação entre a pressão de perda à manobra de Valsalva e a pressão máxima de fechamento uretral com a história clínica em mulheres com incontinência urinária de esforço

Objetivo: analisar a relação entre a pressão de perda com manobra de Valsalva e a pressão máxima de fechamento uretral com a queixa clínica em mulheres com incontinência urinária de esforço. Métodos: estudo retrospectivo no qual foram incluídas 164 pacientes com diagnóstico de incontinência urinária de esforço ou mista atendidas no setor de Uroginecologia e Cirurgia Vaginal do Departamento de Ginecologia da UNIFESP/EPM. As pacientes submeteram-se à anamnese padronizada, exame físico e estudo urodinâmico. A pressão de perda foi mensurada sob manobra de Valsalva (Valsalva leak point pressure - VLPP), com volume vesical de 200 mL. O perfil uretral foi realizado utilizando-se cateter de fluxo número 8, sendo medida a pressão máxima de fechamento uretral (PMFU). As pacientes foram agrupadas conforme a queixa clínica de perda urinária aos esforços e realizou-se análise estatística por meio do teste de chi² para verificar a proporção entre as variáveis. Utilizou-se, a seguir, a análise de variância (ANOVA) para verificar diferenças entre VLPP e PMFU com relação à gravidade subjetiva da incontinência. Resultados: a média de idade foi de 51,2 anos (19-82), sendo que 79 encontravam-se no menacme (48,2%) e 85 (51,8%) na pós-menopausa. A paridade média foi de 4,0 filhos (0-18). Houve correlação entre o número de pacientes com VLPP inferior a 60 cmH2O e a queixa clínica (p<0,0001), sendo que o grupo com perda urinária aos mínimos esforços teve média de 69,1 cmH2O na pressão de perda, o grupo com perda urinária aos moderados esforços teve média de 84,6 cmH2O e o grupo com perda urinária aos grandes esforços teve média de 90,6 cmH2O. Conclusões: VLPP correlacionou-se com a queixa clínica, sendo menor no grupo com perda aos mínimos esforços. Não houve correlação entre a PMFU e a queixa clínica.

Assessment of the intrinsic urethral sphincter component function in postprostatectomy urinary incontinence.

Postprostatectomy incontinence remains a disabling condition. Sphincter injury, detrusor instability, and decreased bladder compliance have been previously reported as major factors. The aim of this study was to evaluate the urethral sphincter intrinsic component, which may provide passive continence. A urodynamic evaluation was performed in 20 patients undergoing a radical retropubic prostatectomy in the preoperative period and 3 months after surgery. Patients with disabled urinary incontinence underwent a new urodynamic evaluation 6 months later. The urethral pressure profile was measured just before, then 10, 20, and 30 minutes after the injection of 0.5 mg/kg moxisylyte chlorhydrate, an alpha adrenergic blocker. Three different pressure components were defined in urethral sphincter capacity: baseline, adrenergic, and voluntary. A postoperative intrinsic urethral sphincter pressure component was found in 17 patients and its value was under 6 cm H(2)O in five cases of severe incontinence. No significant difference was observed for these patients on urethral profile components 6 months later. In contrast, in cases of significant intrinsic component value, no incontinence was observed in most patients. Passive continence after radical prostatectomy should be a matter of concern and may also explain paradoxical incontinence, despite high voluntary urethral pressure obtained after reeducation. A follow-up evaluation of the intrinsic sphincter component is suggested, by using an alpha receptor blockage test during urodynamic studies in the management of patients with postprostatectomy incontinence.

Técnica de burch en el tratamiento quirúrgico de la incontinencia urinaria de esfuerzo femenina. valoración de los resultados y análisis de las causas de los fracasos

ObjectiveTo present our experience with the Burch procedure in the treatment of female urinary stress incontinence (USI) and the assessment of the causes of failure with this technique Material and methodsFrom January 1987 to june 1997 this technique was applied to 157 patients with USI. The mean age of these women was 54.2 years (30-76) and the mean follow-up was 50.24 months. Physical examination, urethral profile and the severity of the USI were not considered in the indication of the procedure ResultsAfter three months, we had total continence or improvement in 80.7%. This rate decreased to 76% after one year. From the second year it was 70%, maintained to fifth year. Considering the severity of incontinence, in patients with mild-moderate grade, we obtained good outcomes after 5 years in 87%. If there was associated detrusor alterations, the rate decreased to 51,8%, and with a bad urethral profile, decreased to 42.4% ConclusionsThe Burch procedure is useful in the treatment of USI but requires a good selection of the patients

NEUROUROLOGICAL INSIGHTS INTO THE ETIOLOGY OF GENITOURINARY PAIN IN MEN

Purpose Pelvic pain remains a challenging urological problem. Because antimicrobial therapy is often unsuccessful for relieving symptoms, it is reasonable to question whether pelvic pain is the result of microbiological versus functional pelvic disease. We analyzed clinical and urodynamic findings to evaluate the role of pelvic floor dysfunction in patients with pelvic pain. Materials and Methods We retrospectively evaluated history, physical examination and urodynamic studies in 103 men with an average age of 47 years who presented with pelvic pain between August 1994 and August 1997. In all patients microbiological tests were negative before study entry. Results The reported locations of pain were the prostate and/or perineal region in 45.6% of cases, scrotum and/or testis in 38.8%, penis in 5.8%, bladder in 5.8%, and lower abdomen and lower back in 1.9% each. Previous treatment consisted of 1 to 12 courses of antibiotics in the preceding 6 to 36 months. In 88.3% of the patients there was pathological tenderness of the striated muscle with poor to absent pelvic floor function. Urodynamics were performed in 84 cases. Cystometry was normal except for decreased compliance in 5 patients. Abnormal findings were mostly evident in the coordination of voiding and in dynamic sphincter-pelvic floor activity. Average sphincter pressure was increased to 104.9 cm. water in 72.6% of the patients, average peak urine flow was decreased to 9.9 ml. per second in 61.9% and functional urethral length was increased to greater than 35 mm. in 79.8%. Urethral profile pattern was dysfunctional, obstructed, and combined dysfunctional and obstructed in 52.4, 11.9 and 21.4% of the cases, respectively, while in 88.1% urethral sensitivity was minimally or markedly increased. Conclusions Since activity is a reflection of neural control, the apparent association of pelvic floor dysfunction with pelvic pain raises the probability of a primary or secondary central nervous system breakdown in the regulation of pelvic floor function. This hypothesis is supported by the improvement in symptoms caused by therapy aimed at modulating the pelvic floor, such as biofeedback, medication and sacral anterior root stimulation.

Preliminary Results of Muscle Cuff Cervicoplasty in the Ewe for the Treatment of Urinary Incontinence

Muscle cuff cervicoplasty consists of dissecting a strip of the superior slip of the levator ani muscle, by sectioning it flush with the symphysis pubis, and applying it like a cuff around the urethra below the bladder neck. We conducted a preliminary study in 12 ewes, including preoperative urodynamic assessment, intravenous urography with retrograde cystography on day 15, and another urodynamic assessment 1 and 3 months after the operation. Two animals died, but the other 10 animals were able to be evaluated. An increase in the urethral functional length with an infracervical plateau was revealed on all postoperative urethral profiles. Only transrectal electrostimulation, performed on the last 5 ewes, demonstrated an elevation of the closure pressure by 5-10 cm H2O. At sacrifice of the animals at 4 months, in situ stimulation of the muscle strip induced muscle contraction in 7 of 10 cases. Histological examination demonstrated persistence of muscle fibers in the cuff, despite the presence of marked fibrosis. The preliminary results are encouraging: urinary continence was improved with a minimal risk of retention, and cervicoplasty appears to retain its contractile activity, suggesting the possibility of a long-term sphincteric and proprioceptive action. This technique could be proposed in women suffering from urinary stress incontinence with sphincter hypoactivity.

Abdomino-perineal dyssnergia as well as neurogenic lesions of the external anal sphincter may cause obstructed defaecation

Some characteristics are described for detrusor-sphincter dyssynergia and the dyssynergic response in spinal injury patients with complete lesions. The urodynamic evaluation and clinical problems are analyzed in 53 patients to identify the importance of early recognition of sphincter dyssynergia. Cystomanometric and urethral profile pressures vary from 30 to 150 cm. water. Although high voiding pressure, particularly associated with autonomic dysreflexia, may be indicative of sphincter dyssynergia it is not diagnostic. Relevant characteristics of patients with detrusor-sphincter dyssynergia are 1) rhythmic detrusor contractions on cystomanometry with associated marked increase in electromyographic activity of the external urethral sphincter or 2) an areflexic bladder with concomitant increase in electromyographic activity on attempted voiding. These characteristics enable early recognition of dyssynergia and afford expediency in its management. The modified approach to external sphincterotomy as practiced by the author provides optimalsurgical approach for urological rehabilitation of dyssynergic patients. Thus, the rationale for characterization of dyssynergia and its management by modified sphincterotomy can help to terminate long-term intermittent catheterization, remove indwelling catheter, prevent renal damage and ameliorate autonomic dysreflexia.