Search Results
Results 451 - 500 of 1908
< 5 6 7 8 9 10 11 12 13 14 15 >
Lazzeri Massimo - - 2003
OBJECTIVES: To evaluate the acute urodynamic effects of the neuropeptide nociceptin/orphanin FQ (N/OFQ) in a selected group of patients with neurogenic detrusor overactivity incontinence in a randomized, placebo-controlled, double-blind study. METHODS: The study involved 14 patients who presented with neurogenic detrusor overactivity due to spinal cord injury. They were randomized ...
Kranse Ries - - 2003
OBJECTIVES: To study the causes for the variation between measurements, which is considerable, in maximal flow rate (Qmax) and the associated detrusor pressure (PdetQmax). Because of the central role of Qmax and PdetQmax in the diagnosis of bladder outlet obstruction, this is reason for concern. METHODS: Spectral analysis was carried ...
Hamaide Annick J - - 2003
OBJECTIVES: To compare retrograde filling cystometry at infusion rates of 5, 10, and 20 mL/min with diuresis cystometry for determination of an appropriate infusion rate and to confirm the reproducibility of measurements obtained by urethral pressure profilometry (UPP) and cystometry in female Beagles. ANIMALS: Adult female Beagles. PROCEDURE: Successive UPP ...
Huang Wen-Chen - - 2003
OBJECTIVES: To elucidate the implications of bladder neck funneling during straining in primary stress urinary incontinence. METHODS: Ultrasonography was performed in 320 consecutive patients who underwent a full urodynamic study and whose only diagnosis was primary genuine stress incontinence. The ultrasound assessment included measurement of the bladder neck angle at ...
Crosbie J J - - 2003
OBJECTIVE: The aim of this study was to develop a technique to simultaneously evaluate bladder and anorectal function. In particular, this study was designed to determine if anal sphincter resting pressure, anal sphincter squeeze pressure and rectal sensation change with bladder filling. PATIENT AND METHODS: A pilot study of ten ...
Polat Co┼čkun - - 2003
In this study, we investigated the effect of different values of intra-abdominal pressure on bacterial translocation. Twenty-four Wistar-Albino rats were divided into four groups. The animals belonging to the Control group were not subjected to any increased intra-abdominal pressure. In groups I, II and III, an intra-abdominal pressure of 14, ...
Bai Sang Wook - - 2003
To investigate the relationship between the endogenous steroid hormones and the lower urinary tract function in postmenopausal women. Thirty postmenopausal volunteer women who did not have lower urinary tract symptoms or hormone replacement therapy were enrolled in this study. Urodynamic studies included uroflowmetry, multi-channel cystometry, and urethral pressure profilometry were ...
Shafik Ahmed - - 2003
A recent study by the senior author demonstrated that striated urethral sphincter contraction effected the inhibition of vesical contraction and suppression of the desire to micturate, an action suggested to be mediated through the "voluntary urinary inhibition reflex". We hypothesized that the effect of pelvic floor muscle (PFM) exercises on ...
Shafik Ahmed - - 2003
PURPOSE: We investigated the hypothesis that mild urethral distention, which presumably occurs during the passage of urine through the urethra, stimulates stretch receptors in the urethral wall, leading reflexively to vesical contraction. MATERIALS AND METHODS: We evaluated 9 male and 10 female healthy volunteers with a mean age +/- SD ...
Chia S J - - 2003
OBJECTIVES: To determine the effect of intravesical protrusion of the prostate (IPP, graded I to III) on lower urinary tract function, by correlating it with the results of a pressure-flow study. PATIENTS AND METHODS: In a prospective study men (aged> 50 years) with lower urinary tract symptoms were initially evaluated ...
Fleischmann Nicole - - 2003
PURPOSE: We examined the relationships among urethral hypermobility, intrinsic sphincter deficiency and incontinence in women. MATERIALS AND METHODS: A total of 65 consecutive women with stress urinary incontinence and 28 with lower urinary tract symptoms not associated with stress urinary incontinence were evaluated with videourodynamics, 24-hour voiding diaries and pad ...
Suaid Haylton J - - 2003
INTRODUCTION AND OBJECTIVES: Chagas' disease causes specific parasympathetic denervation and in its digestive clinic form promotes also functional alterations in bladder. Thus, the aim was to investigate the existence of balance between sympathetic and parasympathetic systems in lower urinary tract, as occurs in other organs. We verified the urethral closing ...
Kranse Ries - - 2003
PURPOSE: We developed a method to objectively compare methods for the quantification of bladder outlet resistance. MATERIALS AND METHODS: We studied unselected voiding cystometries from 131 male patients. Several models proposed for bladder outlet resistance were fitted to the lowest monotonically increasing part (bottom) of the pressure flow plots. In ...
Kuo Hann-Chorng - - 2003
OBJECTIVES: To use videourodynamic assessment to investigate the relationship between Valsalva leak point pressure (VLPP) and cough leak point pressure (CLPP) in women with stress urinary incontinence (SUI). METHODS: A total of 116 women with SUI were retrospectively analyzed by videourodynamic results, urethral pressure profilometry, and leak point pressure findings. ...
McIntosh S L - - 2003
PURPOSE: As part of developing a noninvasive method to measure bladder pressure using an inflatable penile cuff, we tested the hypothesis that detrusor contraction is maintained without inhibition during the test. MATERIALS AND METHODS: Five healthy volunteers and 26 male patients with lower urinary tract symptoms underwent interruption of established ...
Koraitim M M - - 2003
OBJECTIVES: To determine the mechanism of urinary continence after repair of post-traumatic posterior urethral strictures by perineal anastomotic urethroplasty. METHODS: Two groups of male patients were enrolled in this study. Group 1 consisted of 8 patients (mean age 31 years) who had undergone bulboprostatic anastomotic urethroplasty for strictures complicating a ...
Prasad R S - - 2003
OBJECTIVE: To investigate the change in post-void residual bladder volumes (PVR) with 'abdominal vibration' using a percutaneous bladder stimulator in multiple sclerosis (MS) patients compared with either 'no treatment' or 'abdominal pressure'. DESIGN: Randomized controlled cross-over study. SETTING: Regional neurorehabilitation clinics. SUBJECTS: Twenty-eight MS patients with urinary symptoms and PVR ...
Lee Young-Hee - - 2003
OBJECTIVE: To investigate the immediate effect of dorsal penile nerve (DPN) stimulation on detrusor pressure (P(det)) and blood pressure during hyperreflexic contractions of the bladder in patients with cervical spinal cord injury (SCI). DESIGN: Blood pressure and P(det) monitoring during cystometry with and without DPN stimulation. SETTING: Urodynamic laboratory in ...
Michaud Dominique - - 2003
Increased intra-abdominal pressure (IAP) is associated with a variety of clinical situations and has profound effects, both locally and systemically, that may result in organ dysfunction and failure. If not identified and treated promptly, increased IAP can be fatal. Urinary bladder pressure monitoring is a simple and reliable method of ...
Drinnan Michael J - - 2003
AIMS: To investigate the use of an inflatable perile cuff to obstruct flow progressively during voiding in order to provide a noninvasive measure of bladder pressure. METHODS: In this study, we explain the observed relationship of flow rate with applied cuff pressure by analogy with a simple physical model. The ...
Schick Erik - - 2003
AIMS: To study the relation between maximum urethral closure pressure at rest and urethral hypermobility in female patients. PATIENTS AND METHODS: We selected 255 patients aged 20 years and older, with a stable bladder on multichannel urodynamics, without known neurological pathology, and without a history of pelvic or anti-incontinence surgery. ...
Drake M J - - 2003
Phasic changes in pressure have been reported to occur in the bladder which are not associated with micturition. Spontaneous intravesical pressure changes can be recorded from bladders in vitro or bladders in vivo isolated from the central nervous system suggesting that the bladder itself is capable of autonomous activity. Experiments ...
Hornby Colin J - - 2003
Radiation therapy dosimetry software now frequently incorporates biological predictions of the probability of normal tissue complications. This study investigates whether the length of normal structure outlined affects a normal tissue complication probability (NTCP) for that structure. It also researches the effect of any change in the dose parameter used to ...
Walter James S - - 2003
BACKGROUND/OBJECTIVES: High urethral resistance or detrusor-sphincter dyssynergia (DSD) is characterized by obstructed voiding during bladder contractions. DSD is caused by an exaggerated pelvic floor reflex resulting from sensory input from elevated pressure in the bladder that produces reflex constriction of the urethral sphincter. The objective of this study was to ...
Sorin Vladimir - - 2003
A 74-year-old patient who has developed fecal incontinence following continuous ambulatory peritoneal dialysis (CAPD) is presented. Incontinence was caused by elevated intra-abdominal pressure during peritoneal dialysis, which correlated with the volume of dialysate and position of the patient. The lowest pressure was found in the recumbent position. A change of ...
Pajoncini Cinzia - - 2003
AIMS: A prospective analysis of 92 patients with genuine stress incontinence was performed to identify the clinical and urodynamic features of intrinsic sphincter deficiency (ISD). METHODS: We divided the patients into two categories: 50 patients affected by pure ISD as they had severe stress incontinence and no urethral mobility; 42 ...
Damaser Margot S - - 2003
Development of an animal model of stress urinary incontinence is dependent on a measure of urethral resistance, such as leak point pressure (LPP). However, animals will not cough or perform Valsalva maneuvers upon request. The aim of this study was to use urodynamics to compare bladder pressures during spontaneous voids ...
Radziszewski Piotr - - 2003
OBJECTIVE: This study was performed to investigate the influence of calcitonin gene-related peptide (CGRP) and substance P (SP) on the intra-urethral pressure in female rats, as both these neuropeptides have been demonstrated to occur in nerve fibres throughout all layers of the intrinsic external urethral sphincter of the rat. MATERIAL ...
Valentini Françoise A - - 2003
AIMS: To gain insight from an adaptable computer model of micturition into the pathophysiological phenomena occurring during voiding in men with lower urinary tract symptoms due to benign prostatic enlargement (BPE). METHODS: By using the Valentini-Besson-Nelson (VBN) micturition model, we proceeded with an in-depth and systematic analysis of the pressure-flow ...
Holst U - - 2003
The aim of this study was to elucidate the relation between pelvic pressure and bladder pressure during pelvic perfusion with standardized flow rates. Anaesthetized Danish Landrace Breed pigs (n = 5) weighing 35-40 kg were studied. Transparenchymally two 6-F catheters were placed in both renal pelves for pressure measurement and ...
Kuo Hann-Chorng - - 2003
BACKGROUND AND PURPOSE: The mechanism by which clinical improvement occurs through pelvic floor muscle training (PFMT) for genuine stress incontinence, detrusor instability, or mixed incontinence is not established. Videourodynamic assessment of the anatomical changes of the pelvic floor muscles has not been reported. This study investigated the anatomical change of ...
Yang Jenn-Ming - - 2003
AIMS: The aim of this study was to explore the relationship between voiding function and factors such as age, gravidity, parity, menopause, and anterior vaginal wall relaxation. METHODS: One hundred twenty-five women were identified from urodynamic records, 83 premenopausal and 42 postmenopausal. All had had a sonographic assessment of the ...
McIntosh Stuart - - 2003
AIMS: In the development of a non-invasive method for estimating isovolumetric intravesical pressure (pves,isv) we looked for a relationship between intra-abdominal pressure (pabd) and general build, expressed as body mass index (BMI) in men with lower urinary tract symptoms (LUTS). MATERIALS AND METHODS: In 100 consecutive male patients undergoing an ...
Rao Soujanya G - - 2003
AIMS: Mathematical models are useful for developing predictive parameters for characterizing the biomechanics of voiding dysfunction. The goal of this project was to test a one-dimensional steady flow model used to predict the minimum cross-sectional urethral area from urodynamic data. METHODS: Nine adult female subjects underwent video-urodynamic testing. By using ...
Schmidt Frank - - 2003
A urodynamic characterization of the distinctive patterns of normal micturition in man and rat was undertaken. Data were obtained from experimental studies where bladder pressure was measured suprapubically obviating urethral instrumentation. Ambulatory urodynamic studies were conducted with 17 asymptomatic male volunteers. Bladder pressure was monitored via a supra-pubic catheter and ...
Fischer Julie R - - 2003
Prazosin is a readily available alpha-adrenergic antagonist that may be useful in the management of functional urethral obstruction in companion animals. This study used urethral pressure profilometry to evaluate the urethral effects of prazosin and phenoxybenzamine in healthy, non-sedated, male Beagle dogs. Heart rate, indirect systolic, diastolic and mean arterial ...
Madjar Shahar - - 2003
AIMS: To characterize the factors contributing to changes in baseline abdominal pressure (P(abd)) and the correlation between DeltaVLPP, VLPP(tot), and other clinical and urodynamic variables. METHODS: Two hundred sixty-four female patients who had undergone an anti-incontinence procedure between February 1994 and October 1999 were retrospectively reviewed. The urodynamics performed for ...
Barbic Matija - - 2003
AIMS: Firm bladder neck support during cough, suggested to be needed for effective abdominal pressure transmission to the urethra, might depend on activity of the levator ani muscle and elasticity of endopelvic fascia. METHODS: The study group of 32 patients with stress urinary incontinence and hypermobile bladder neck, but without ...
Petros Peter - - 2003
AIMS: The aim of this study was to investigate the anatomical origins and clinical significance of cough pressure transmission ratio (CTR) by using virtual-operation (VO) techniques. METHODS: Thirty-four patients underwent perineal ultrasound examination, standard urethral pressure cough testing both with and without unilateral midurethral anchoring (VO), all tests being performed ...
Ferguson Corri L - - 2003
AIMS: We previously have investigated a technique for serial bladder pressure measurements in patients with spinal cord injury (SCI) using intermittent catheterization. In the current study, we compared an FDA-approved digital gauge with the previously studied analog gauge and studied the effects of hydrostatic pressure differences. METHODS: Either a digital ...
Mahale Adit S - - 2003
Peritoneal dialysis (PD) is associated with a number of complications, some of which can be attributed to raised intra-abdominal pressure. Intra-abdominal pressure is highest during coughing or straining--activities which, fortunately, are transient. High pressure, primarily due to high volumes of PD solution, can predispose patients to hernias, dialysate leaks, and ...
Shafik Ahmed - - 2003
OBJECTIVE: It has been reported that digital pressure on the perineum inhibits bladder contraction; however, the mechanism is not fully understood. We investigated the hypothesis that this mechanism may be reflex in nature. MATERIAL AND METHODS: A total of 21 healthy volunteers (13 males; mean age 42.3 +/- 11.8 years) ...
Bai S W - - 2003
The aims of this study were to investigate whether endogenous steroid hormones are (1) related to pathogenesis of stress urinary incontinence after menopause, (2) are related to severity of stress urinary incontinence, and (3) are related to prognostic parameters of stress urinary incontinence. Twenty post-partum women with clinically diagnosed stress ...
Biancofiore Gianni - - 2003
OBJECTIVE: No data are available on the incidence and clinical relevance of increased intra-abdominal pressure after orthotopic liver transplantation. This study assessed abdominal hypertension in a population of transplanted patients as this may be an important cofactor in early postoperative complications. DESIGN AND SETTING: Prospective clinical study in an intensive ...
Backhaus Björn O - - 2002
PURPOSE: Bladder outlet obstruction with intravesical pressures exceeding 40 cm. H2O often results in irreversible renal damage. Bladder outlet obstruction also results in alterations in bladder physiology, including wall thickening, reduced compliance and decreased capacity. If unchecked these changes may lead to the subsequent need for bladder augmentation. From a ...
Long Cheng-Yu - - 2002
In order to investigate the effects of urogenital prolapse on lower urinary tract function, we studied 61 women with stage III to IV pelvic organ prolapse (prolapse group) and 40 volunteers without prolapse (control group). Each woman underwent urinalysis, urinary questionnaire, pelvic examination, and urodynamic study. The incidence of urinary ...
Matsumoto Seiji - - 2002
PURPOSE: We investigated the effects of distention on intravesical pressure generation in response to stimuli in relation to its effects on bladder wall thickness and morphology. MATERIALS AND METHODS: A total of 25 New Zealand White rabbits were separated into 5 groups of 5 each. Each in vitro whole bladder ...
Holst U - - 2002
OBJECTIVE: To examine, in young pigs, changes in baseline pelvic pressure and diuresis in the contralateral kidney during conditions of increasing pelvic pressure and perfusion with isotonic saline in the ipsilateral renal pelvis; the role of a reno-renal nervous mechanism was examined by denervating the kidneys, and the effect of ...
Klausner Adam P - - 2002
OBJECTIVES: To examine the effect of cross-sectional catheter diameter on urodynamic measurement of bladder outlet obstruction as predicted by the Abrams-Griffiths nomogram. METHODS: Thirty-one patients with symptomatic benign prostatic hyperplasia underwent free flow measurements followed by pressure-flow urodynamic evaluation using 5F and 10F urethral catheters in randomly assigned order. The ...
Xu Yuemin - - 2002
OBJECTIVE: To investigate the effect of extramural support from the pouch and abdominal wall to enhance the continent mechanism of tapered ileum. METHODS: A total of 24 patients underwent a procedure in which an ileal segment was tapered into an efferent tube, of which a part was placed between the ...
< 5 6 7 8 9 10 11 12 13 14 15 >