Search Results
Results 351 - 400 of 1914
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Guaderrama Noelani M - - 2005
AIMS: To describe the vaginal pressure profile in asymptomatic nulliparous women. METHODS: Fourteen nulliparous women without symptoms of anal or urinary incontinence were studied with vaginal manometry. A rapid pull-through technique utilized a four-channel water-perfused catheter on a motor-driven puller to create a pressure profile for each subject. The profiles ...
Scaldazza Carlo Vecchioli - - 2005
INTRODUCTION: The study evaluates the impact of three different sized (4.5-, 6- and 7-Fr) catheters on pressure-flow studies in women undergoing urodynamic evaluation for lower urinary tract symptoms. MATERIAL AND METHODS: 60 women referred for the evaluation of lower urinary tract symptoms were enrolled in this randomized controlled study. Patients ...
Kenton Kimberly - - 2005
OBJECTIVE: The purpose of this study was to determine the relationship between urethral pressure and the neuromuscular activity of the urethral sphincter with the use of quantitative electromyography during bladder filling. STUDY DESIGN: Women who underwent multichannel urodynamic testing with concentric needle electromyography of the striated urethral sphincter between December ...
Huckabay Chad - - 2005
AIMS: To propose a urodynamic protocol to comprehensively assess all parameters of post prostatectomy incontinence (PPI). METHODS: Sixty men with a history of PPI after radical prostatectomy prospectively underwent a standardized video urodynamics protocol. A 7F urethral catheter was used for standard cystometry, abdominal leak point pressure (ALPP), and pressure ...
Nebel Catherine - - 2005
European sea bass (Dicentrarchus labrax) are euryhaline fish that tolerate wide salinity fluctuations owing to several morphofunctional adaptations. Among the osmoregulatory sites (tegument, branchial chambers, digestive tract, urinary system), little is known about the kidney and the urinary bladder. The present study describes the ontogeny of the urinary system (kidney ...
Giannitsas K - - 2004
OBJECTIVE: To compare the efficacy of tolterodine and oxybutynin in the treatment of specific, according to their urodynamic grade of severity, populations with overactive detrusor. METHODS: In this open, randomized, two-way crossover study 128 women with urodynamically confirmed, idiopathic detrusor overactivity were recruited. Patients were categorized in 4 grades of ...
Matsumoto Mutsuko - - 2004
Urinary bladder distension is known to influence the cardiovascular system under a pathophysiological condition such as spinal cord injury, hypertension, and arteriosclerosis. A reflex due to bladder distension and/or contraction is considered as one reason for the cardiovascular disturbance associated with micturition. However, it has remained unknown how much intravesical ...
Basgul Elif - - 2004
OBJECTIVE: Immunosuppression is directly related to the degree of trauma. The aim of this study is to compare the effects of low and high intra-abdominal pressure on immune response in moderate surgical trauma. METHODS: Twenty-two patients, scheduled for laparoscopic cholecystectomy, were randomly allocated to one of 2 groups according to ...
Digesu Giuseppe Alessandro - - 2004
OBJECTIVE: To determine whether the acceleration of flow rate (AFR), pressure flow variables and urethral pressure profilometry (UPP) measurements might have a role in evaluating women with urodynamic stress incontinence (USI), to predict the surgical outcome and de novo detrusor overactivity after Burch colposuspension. PATIENTS AND METHODS: Women with a ...
McGahan John P - - 2004
PURPOSE: A pelvic phantom was constructed to evaluate the effect of ultrasound probe pressure during performance of bipolar acquisition technique (BAT) for prostate localization for radiotherapy. METHODS AND MATERIALS: A pelvic phantom of a gelatin mold with a water-filled balloon representing the bladder and rectum and a central encapsulated clay ...
Streng Tomi - - 2004
Retigabine is a novel anticonvulsant drug that not only augments gamma-aminobutyric acid mechanisms, but also opens voltage gated K+ channels (KCNQ). In this study we investigated the effects of retigabine on detrusor activity in rats. To conscious, female Sprague-Dawley rats undergoing continuous cystometry retigabine was given intravenously (0.5, 1 and ...
Wahl Edward F - - 2004
OBJECTIVE: To show, for pressure-time data from cystometrography (CMG), the potential practical clinical application of automatically identified, displayed, analysed and quantified compliance and contractility, as undesirable high-pressure detrusor storage may be caused by inefficient compliance or uninhibited contractions (UNC). MATERIAL AND METHODS: Bladder contractility was measured by UNC and compliance ...
le Feber Joost - - 2004
The objective of this work was to study the relation between afferent bladder nerve activity and bladder mechanics and the mechanisms that initiate and terminate bladder contractions. Bladder nerve activity, pressure and volume were recorded during the micturition cycle in the rat. The highest correlation was found between afferent nerve ...
Wahl Edward F - - 2004
OBJECTIVE: To devise a new, practical and more accurate method for measuring bladder compliance, and to show that traditional estimates of compliance are impractical. MATERIALS AND METHODS: Childhood bladder capacity varies greatly with age while detrusor pressure in a normal bladder does not. Consequently, traditional bladder compliance (DeltaV/DeltaP) increases with ...
Nishimoto Ken-Ichi - - 2004
BACKGROUND: An intraurethral pressure-time profile as urodynamic information was obtained in a non-invasive manner using an equivalent equation as a voiding model. METHODS: The reasonability of the voiding model was confirmed by applying it to an experimental flow curve likened to urinary flow. The flow curve was approximated and the ...
Karnak Ibrahim - - 2004
BACKGROUND/PURPOSE: Flow of a fluid through a collapsible tube is under the influence of various factors including the external compressing pressure. The intraabdominal pressure (IAP) should influence the flow through the ureter. Therefore, an experimental study was planned to investigate the effects of ureteral length and external compressing pressure onto ...
Chin-Peuckert Lily - - 2004
PURPOSE: We hypothesized that warm infusion solution should be used for urodynamic studies in children because it more closely simulates normal physiology. Thus, we conducted a prospective randomized study comparing consecutive room temperature (RT) and body temperature (BT) cystometrograms (CMG) in the same child. MATERIALS AND METHODS: Subjects underwent identical ...
Wahl Edward F - - 2004
OBJECTIVE: To determine the detrusor pressure rise of a normal bladder (P(cap,NL)) when filled to capacity. PATIENTS AND METHODS: Twenty-four patients with an apparently normal bladder, i.e. with symptoms but whose cystometrogram (CMG) showed no pathology of any kind and a near-normal pressure vs volume plot, were selected from 218 ...
Austin J Christopher - - 2004
PURPOSE: Mice with gene deletion or targeted over expression are important for understanding the remodeling that follows partial bladder outlet obstruction (PBOO). This condition predominates in males. We produced PBOO in male mice and now report the physiological, histological and molecular consequences. MATERIALS AND METHODS: Male C57bl/6 mice were surgically ...
Wahl Edward F - - 2004
OBJECTIVES: To: (i) calculate traditional compliance (CTrad) for a normal bladder by DeltaV/DeltaPdet, where DeltaV is the mean volumetric capacity and DeltaPdet is the detrusor pressure rise; (ii) assess its usefulness; (iii) identify the variables that are necessary for correctly assessing bladder compliance; and (iv) using these variables, report a ...
Tomiyama Yoshitaka - - 2004
PURPOSE: We evaluated the effects of the nonselective muscarinic receptor agonist carbachol (CCh) and its antagonist atropine on ureteral function in anesthetized dogs. MATERIALS AND METHODS: Drug effects were evaluated on elevated pressure in a completely obstructed ureter and peristalsis in its partially obstructed fellow ureters as well as on ...
Schultens A - - 2004
OBJECTIVES: Urinary incontinence is a common symptom of urogenital aging that affects a considerable proportion of postmenopausal women. Morphological and morphometrical modulation of the bladder by estrogen are known. Yet data showing that this translates into changes of in vivo function of the urinary bladder are missing. METHODS: We measured ...
Baessler Kaven - - 2005
The aim of this study was to assess the effects of voluntary pelvic floor contraction and voluntary pelvic floor relaxation on the urethral closure pressure at rest. In 104 consecutive women, three urethral pressure profiles were performed: standard profile at rest, with voluntary pelvic floor contraction and with voluntary pelvic ...
Goto Kenji - - 2005
Leiomyoma of the urethra is a relatively rare condition often presenting as an anterior vaginal wall mass or a mass that protrudes from the urethral meatus. We report on the urodynamic changes after vaginal surgery to remove a suburethral leiomyoma, which protruded from the vaginal orifice resulting in dysuria and ...
Kocjancic E - - 2004
PURPOSE: Leak point pressure (LPP) measurement has become standard in the diagnosis of stress urinary incontinence. Leak point pressure is determined by increasing abdominal pressure, which can be done with a Valsalva maneuver or coughing, that is Valsalva LPP and cough LPP (CLPP). It may be influenced by catheter size, ...
Close Clare E - - 2004
OBJECTIVE: To report our experience with autoaugmentation gastrocystoplasty (AAGC, reported to result in an inconsistent augmentation effect in children) in a sheep model, specifically addressing issues of surgical techniques and postoperative bladder drainage that may affect the augmentation result, as many factors have been implicated in the poor outcome. MATERIALS ...
Doggrell Sheila A - - 2004
Doxazosin mesylate is an alpha1-adrenoceptor antagonist that was used to treat hypertension until a major study (ALLHAT; Antihypertensive and Lipid Lowering Treatment to Prevent Heart Attack Trial) showed that it increased the risk of progressing to heart failure. Doxazosin is now being used to treat benign prostatic hyperplasia (BPH). Noradrenaline ...
Hunter J D - - 2004
The pressure within the abdominal cavity is normally little more than atmospheric pressure. However, even small increases in intra-abdominal pressure can have adverse effects on renal function, cardiac output, hepatic blood flow, respiratory mechanics, splanchnic perfusion and intracranial pressure. Although intra-abdominal pressure can be measured directly, this is invasive and ...
Monga Manoj - - 2004
OBJECTIVES: To evaluate irrigant flows and intrapelvic pressures with small-diameter access sheaths. Ureteral access sheaths improve irrigant flow and decrease intrarenal pelvic pressures during flexible ureteroscopy. However, no comparisons of individual sheaths have been conducted. Previous studies have demonstrated more favorable results with the 12F sheath than with the 10F ...
Rocha Isabel - - 2004
The hypothalamus is a key area for the integration of the autonomic features of affective behavior. Hypothalamic defence area (HDA) stimulation evokes major cardiorespiratory changes as well as modifications of general autonomic activity both in the anesthetized and conscious animal. Micturition is due to an increase in pelvic parasympathetic activity ...
Snodgrass Warren T - - 2004
Disordered innervation of the detrusor musculature and external sphincter in patients with myelomeningocele adversely affects bladder function and potentially threatens the upper urinary tracts. Children with this condition can be categorized into high and low- risk groups for secondary damage from a neurogenic bladder based on intravesical pressure. Those with ...
Reitz André - - 2004
AIMS: The aim of this functional urodynamic experiment was to study the effect of the selective alpha1(A)-blocker tamsulosin on the urethral pressure in healthy human females and assessed first the resting urethral pressure and second the urethral contractility in response to magnetic stimulation of the sacral roots. METHODS: 11 healthy ...
Reddy Bala S - - 2004
We describe a new technique for extraction of complex foreign bodies from the urinary bladder which cannot be removed through the conventional pediatric cystoscope, thereby avoiding an open cystotomy and the morbidity associated with it. Using cystoscopy as the optical device through the urethra, a 10-mm laparoscopic port can be ...
Streng Tomi - - 2004
OBJECTIVES: To obtain information on the mechanisms of female rat micturition using a model in which pressure was measured in the bladder and distal part of the urethra corresponding to the location of the rhabdosphincter, providing information on the role of the sphincter in opening and closing the urethral lumen. ...
Di Grazia Eugenio - - 2004
OBJECTIVE: To investigate female bladder outlet obstruction by urodynamics and create a nomogram to propose in clinical applications. PATIENTS AND METHODS: We investigated by urodynamic studies 200 women referred for lower urinary tract symptoms. A total of 179 patients were available for analysis: 136 served as control and 43 as ...
Saleem Talha Bin - - 2004
Abdominal compartment syndrome is a systemic syndrome involving derangement in cardiovascular hemodynamics, respiratory and renal function as a result of sustained increase in intra-abdominal pressure. This results in multi-organ failure requiring prompt action and treatment. Presentation can be acute, chronic and acute on chronic. Initial diagnosis is clinical, confirmed by ...
Carpenter Kent E - - 2004
The morphology of the swim bladder and inner ear of the nurseryfish, Kurtus gulliveri, appear adapted for enhanced pressure wave reception. The saccule is enlarged and surrounded by very thin bone and two large fontanelles that would present reduced resistance to pressure waves. The swim bladder is elaborate, with six ...
Ukimura Osamu - - 2004
Recently, we reported that the anterior fibromuscular stroma (AFMS) of the prostate has significant different innervation compared with the other glandular regions of the prostate. In healthy volunteers (n = 12) using transrectal ultrasound (US), or TRUS, monitoring during voiding, we observed dynamic change (p < 0.0001) of the thickness ...
Reitz André - - 2004
PURPOSE: Detrusor-sphincter dyssynergia is a common cause of bladder outlet obstruction in spinal cord injured patients and leads to poor bladder emptying and high bladder pressures, which if left untreated might cause renal failure. In this study, we tested the recently published hypothesis that oral administration of a nitric oxide ...
Shafik Ahmed - - 2004
OBJECTIVES: The effect of vesical contraction on the non-sphincteric part of the urethra has been scarcely addressed in the literature. In this study, the hypothesis that detrusor contraction effects dilatation of the non-sphincteric part of the urethra was investigated. METHODS: Non-sphincteric urethral pressure response to vesical balloon distension with normal ...
Herrmann V - - 2004
The aim of this study was to evaluate a new method to measure urethral resistance among 66 women with urinary incontinence. A stainless steel sphere attached to a guide wire was developed. The sphere is inserted into the bladder and withdrawn through the urethra at a steady rate. Serial measurements ...
Wagner Andrew A - - 2004
PURPOSE: We describe a novel, double lumen, intravesical, suprapubic catheter designed to meet the requirements of pediatric urodynamics that is easy to use and has minimal complications. MATERIALS AND METHODS: A commercially available 10Fr pediatric suprapubic pigtail catheter forms the outer lumen for instilling filling media. A 16 gauge epidural ...
Adin Christopher A - - 2004
OBJECTIVE: To describe a percutaneously controlled static hydraulic urethral sphincter (SHUS) and evaluate urodynamic effects of the SHUS in canine cadavers. SAMPLE POPULATION: Cadavers of 6 adult female dogs. PROCEDURE: Cadavers were obtained immediately after dogs were euthanatized. Baseline maximal urethral closure pressure (MUCP) and cystourethral leak point pressure (CLPP) ...
DasGupta Ranan - - 2004
PURPOSE: We investigated the action of sacral neuromodulation in restoring voiding function in women with urinary retention attributable to sphincter overactivity (Fowler's syndrome). MATERIALS AND METHODS: We recruited women within retention who were able to void following neuromodulation by temporary test stimulation or a permanent implant. Urethral pressure profiles, cystometry ...
Reitz André - - 2004
AIMS: This functional urodynamic study assessed the effect of the nitric oxide donor isosorbide dinitrate on the external urethral sphincter and hypothesised first that nitric oxide could lower the resting sphincter pressure, second that nitric oxide could influence the sphincter contractility during magnetic stimulation, and third that nitric oxide could ...
Nessar G - - 2004
A continent ileostomy, or Kock pouch, is a useful option for patients with inflammatory bowel disease whose only alternative is an end ileostomy. This technique has a high morbidity rate. Nipple valve slippage is the most common complication, causing incontinence or intubation problems. A novel, valveless continent ileostomy technique is ...
Tarhan Fatih - - 2004
Although nitric oxide (NO) plays an important role in the urethra and outlet region of the bladder, the role of this inhibitory neurotransmitter in the human detrusor remains unclear. We conducted a prospective, randomised, open study on 31 patients with urodynamically proven idiopathic detrusor overactivity in order to examine the ...
Pollak Jennifer T - - 2004
This study aimed to compare measurements of urethral pressure profile and Valsalva leak point pressure (VLPP) obtained with air-charged and microtransducer catheters. Forty-five women with urogynecologic dysfunction underwent multichannel urodynamic evaluation including maximum urethral closure pressure (MUCP), functional urethral length (FUL), and VLPP with air-charged balloon catheters as well as ...
Yokota Takeshi - - 2004
BACKGROUND: Benign prostatic hypertrophy (BPH) produces a variety of changes in the urodynamic pattern of micturition and is usually associated with high detrusor voiding pressure and poor urine flow-rate. In most previous experimental models, designed to simulate this condition, some degree of obstruction is immediately imposed by the technique employed ...
Chou Eric Chieh-Lung - - 2004
PURPOSE: The rabbit has proved to be an excellent model in which to study lower urinary tract function and pathological mechanisms involved in specific forms of lower urinary tract dysfunctions, including those involved with partial outlet obstruction (benign prostatic hyperplasia), erectile dysfunction, bladder instability and ischemic bladder disease. The current ...
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