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Low flow voiding pattern

Hamed Mohamed El Darawany
Introduction: The optimal management strategy for urethral injuries remains controversial. Suprapubic cystostomy followed by delayed urethral reconstruction or immediate primary urethral injury repair is associated with high complication rate. Early endoscopic realignment for urethral injuries provides early definitive procedure with low complications and avoids the need for further urethral reconstruction. Materials and Methods: Between April 2007 and March 2016, 27 patients with traumatic posterior urethral disruptions were reviewed...
January 2018: Urology Annals
Kwang Hyun Kim, Hyun Suk Yoon, Wan Song, Hee Jung Choo, Hana Yoon, Woo Sik Chung, Bong Suk Sim, Dong Hyeon Lee
PURPOSE: To classify patients with orthotopic neobladder based on urodynamic parameters using cluster analysis and to characterize the voiding function of each group. MATERIALS AND METHODS: From January 2012 to November 2015, 142 patients with bladder cancer underwent radical cystectomy and Studer neobladder reconstruction at our institute. Of the 142 patients, 103 with complete urodynamic data and information on urinary functional outcomes were included in this study...
2017: PloS One
Somen K Bhudolia, Pavel Perrotey, Sunil C Joshi
For mass production of structural composites, use of different textile patterns, custom preforming, room temperature cure high performance polymers and simplistic manufacturing approaches are desired. Woven fabrics are widely used for infusion processes owing to their high permeability but their localised mechanical performance is affected due to inherent associated crimps. The current investigation deals with manufacturing low-weight textile carbon non-crimp fabrics (NCFs) composites with a room temperature cure epoxy and a novel liquid Methyl methacrylate (MMA) thermoplastic matrix, Elium(®)...
March 15, 2017: Materials
M Fernández-Ibieta, J Rojas Ticona, V Villamil, M J Guirao Piñera, A López García, G Zambudio Carmona
OBJECTIVES: In the historical series, the diagnostic yield of lumbosacral magnetic resonance imaging to rule out occult spinal dysraphism (or occult myelodysplasia), requested by paediatric urology, ranged from 2% to 15%. The aim of this study was to define our cost-effectiveness in children with urinary symptoms and to define endpoints that increase the possibility of finding occult spinal dysraphism. PATIENTS AND METHODS: A screening was conducted on patients with urinary dysfunction for whom an magnetic resonance imaging was requested by the paediatric urology clinic, for persistent symptoms after treatment, voiding dysfunction or other clinical or urodynamic findings...
November 2017: Actas Urologicas Españolas
Arie Carneiro, Paulo Sakuramoto, Marcelo Langer Wroclawski, Pedro Herminio Forseto, Alexandre Den Julio, Carlos Ricardo Doi Bautzer, Leonardo Monte Marques Lins, Andre Kataguiri, Fernanda Batistini Yamada, Gabriel Kushiyama Teixeira, Marcos Tobias-Machado, Antonio Carlos Lima Pompeo
PURPOSE: This study compared the suprapubic (SP) versus retropubic (RP) prostatectomy for the treatment of large prostates and evaluated perioperative surgical morbidity and improvement of urinary symptoms. MATERIALS AND METHODS: In this single centre, prospective, randomised study, 65 consecutive patients with LUTS and surgical indication with prostate volume greater than 75g underwent open prostatectomy to compare the RP (32 patients) versus SP (33 patients) technique...
March 2016: International Braz J Urol: Official Journal of the Brazilian Society of Urology
Mayank Mohan Agarwal, Saurabh Jain, Ravimohan Mavuduru, Shrawan K Singh, Arup K Mandal
INTRODUCTION: Dysfunctional voiding results from a disturbance in the coordination between sphincter relaxation and detrusor contraction. Video urodynamic studies with electromyography (EMG) are used for diagnosis but have limitations of availability and interpretation. We identified a plateau type voiding detrusor pressure tracing pattern in these patients with a potential of helping diagnosis. MATERIALS AND METHODS: Urodynamic data and tracings of adult patients having been diagnosed with external urethral sphincter dysfunction (EUSD) were retrospectively analyzed...
April 2016: Indian Journal of Urology: IJU: Journal of the Urological Society of India
Santhosh Gaddikeri, Daniel S Hippe, Yoshimi Anzai
OBJECTIVE: To describe the potential role of dynamic contrast-enhanced (DCE) MRI in differentiating carotid space (CS) paraganglioma from schwannoma in the head and neck. MATERIAL AND METHODS: We retrospectively reviewed records of 126 patients who had undergone DCE-MRI between June 2008 and July 2014 and found six patients with histologically verified benign CS tumors. The images were evaluated for tumor T1 and T2 signal characteristics, flow voids, and enhancement pattern...
April 22, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
Eric H Souied, Alexandra Miere, Salomon Yves Cohen, Oudy Semoun, Giuseppe Querques
PURPOSE: To describe the optical coherence tomography angiography (OCTA) features of subretinal fibrosis in the context of exudative age-related macular degeneration. METHODS: Patients diagnosed exudative age-related macular degeneration presenting with subretinal fibrosis were imaged by conventional multimodal imaging and OCTA. The patients were divided into the following two groups: group A, for eyes with active exudative features over the last 6 months, and group B, for eyes without any sign of exudation for >6 months...
2016: Developments in Ophthalmology
Alice Faure, Aurore Bouty, Yoke Lin Nyo, Mike O'Brien, Yves Heloury
INTRODUCTION: Although two-stage graft urethroplasty is widely used, the literature regarding the complication rates and functional characteristics of reconstructed neourethra is relatively modest. OBJECTIVES: The aim was to analyze the complication rates and uroflow data of boys who have previously undergone a two-stage graft urethroplasty procedure for proximal and complicated hypospadias. PATIENTS AND METHODS: We retrospectively reviewed the clinical outcomes of 52 boys with proximal (n = 44) and complicated (n = 8) hypospadias who underwent two-stage graft urethroplasty repair (median age of 15 months and 3 years respectively) between 2004 and 2015...
October 2016: Journal of Pediatric Urology
Shang-Jen Chang, Judy Y-C Chen, I-Ni Chiang, Stephen S-D Yang
OBJECTIVE: To determine the age-specific lowest acceptable value of bladder capacity (LABC) for interpretation of uroflowmetry tests in children. METHODS: From September 2008 through July 2012, healthy children aged 4-9 years were enrolled. All children were asked to have two sets of uroflowmetry and post-void residual (PVR) tests. We selected the tests with lower bladder capacity (voided volume+ PVR) of each child to analyze the LABC. Only bell shaped curves were regarded as normal...
March 16, 2016: Lower Urinary Tract Symptoms
Huajun Li, Haifeng Ji, Zhiyao Huang, Baoliang Wang, Haiqing Li, Guohua Wu
Based on a laser diode, a 12 × 6 photodiode array sensor, and machine learning techniques, a new void fraction measurement method for gas-liquid two-phase flow in small channels is proposed. To overcome the influence of flow pattern on the void fraction measurement, the flow pattern of the two-phase flow is firstly identified by Fisher Discriminant Analysis (FDA). Then, according to the identification result, a relevant void fraction measurement model which is developed by Support Vector Machine (SVM) is selected to implement the void fraction measurement...
2016: Sensors
Anna Kociemba, Katarzyna Karmelita-Katulska, Marek Stajgis, Grzegorz Oszkinis, Małgorzata Pyda
BACKGROUND: In addition to ultrasound, magnetic resonance imaging (MRI) is considered a suitable, non-invasive technique to assess the type and extent of vascular malformations. The distinction between low- and high-flow lesions is crucial because it determines appropriate patient treatment. PURPOSE: To distinguish high-flow from low-flow lesions on the basis of the enhancement pattern on MIP images acquired from dynamic time-resolved MR angiography (MRA) and compare it with previously described MR-based methods...
May 2016: Acta Radiologica
Burhan Coskun, Rebecca S Lavelle, Feras Alhalabi, Gary Lemack, Philippe E Zimmern
INTRODUCTION: We reviewed the role of urodynamics (UDS) in the management of women with incontinence following mid-urethral sling removal (MUSR). METHODS: Following IRB approval, women from a longitudinal database who had persistent or recurrent urinary incontinence (UI) after MUSR, desired further therapy, and subsequently underwent UDS were reviewed. Women with neurogenic bladder, obstructive symptoms without UI, urethra-vaginal fistula, anterior compartment prolapse >Stage 2, or those who had concomitant autologous sling surgery at the time of MUSR were excluded...
November 2016: Neurourology and Urodynamics
Miroslava Stastna, Karel Slais
This study concentrates on development of instrumentation for focusing and separation of analytes in continuous flow. It is based on bidirectional ITP working in wide pH range with separation space of closed void channel of trapezoidal shape and continuous supply of sample. The novel instrumentation is working with electrolyte system formulated previously and on the contrary to devices currently available, it allows preparative separation and concentration of cationic, anionic, and amphoteric analytes simultaneously and in wide pH range...
October 2015: Electrophoresis
Zhihua Sun, Fei Jin, Jing Zhang, Yue Fu, Wei Li, Hong Guo, Yunting Zhang
BACKGROUND: Meningioangiomatosis (MA) is a rare meningiovascular malformation or hamartomatous lesion in the central nervous system. Radiographic findings of MA may show a variety of characteristics according to different histological components. We present three cases of sporadic MA with different imaging appearances in an attempt to identify specific imaging characteristics. CASE PRESENTATION: In case 1, an irregular hyperdense solid mass was localized in the left middle cranial fossa, demonstrating low and equal signal intensity on T1-weighted imaging (T1WI; TR/TE 2,048...
February 28, 2015: World Journal of Surgical Oncology
Zhihua Sun, Fei Jin, Jing Zhang, Yue Fu, Wei Li, Hong Guo, Yunting Zhang
BACKGROUND: Meningioangiomatosis (MA) is a rare meningiovascular malformation or hamartomatous lesion in the central nervous system. Radiographic findings of MA may show a variety of characteristics according to different histological components. We present three cases of sporadic MA with different imaging appearances in an attempt to identify specific imaging characteristics. CASE PRESENTATION: In case 1, an irregular hyperdense solid mass was localized in the left middle cranial fossa, demonstrating low and equal signal intensity on T1-weighted imaging (T1WI; TR/TE 2,048...
December 2015: World Journal of Surgical Oncology
S V Moschnegootz, L S Barbarash
This paper summarizes our experience of exploiting a Dual Echo Steady State (DESS) pulse sequence for the fast qualitative assessment of cerebrospinal fluid (CSF) flow dynamics at the aqueduct of Sylvius and Monro's foramina levels of the brain liquor pathways using a low-field magnetic resonance imager. Normal and pathologic CSF flow patterns are discussed. The capabilities of the described method as an effective extra tool for deriving the additional diagnostic information via visualization of flow voids in the brain CSF pathways are shown...
June 3, 2008: Neuroradiology Journal
X Deffieux, T Thubert, G Amarenco
OBJECTIVE: To study the intrinsic diagnostic value of the exams performed to explore bladder outlet obstruction in women. METHODS: Review of literature (PubMed, Embase, Cochrane Database) using following keywords: female, bladder outlet obstruction, post-void residual, uroflowmetry, flow pattern, cystoscopy, MRI, retrograde cystography, bladder wall thickness, bladder trabeculation, urinary retention, voiding cystometry, pressure flow studies, electromyography. Among 2660 articles (animal and anatomical studies have been excluded), 40 have been selected because they focused on the evaluation of the intrinsic value of exams...
October 2012: Progrès en Urologie
Peng Zhang, Zhi-jin Wu, Yong Yang, Chao-hua Zhang, Xiao-dong Zhang
OBJECTIVE: To assess the value of video-urodynamic study (VUD) in the identification of lower urinary tract voiding dysfunction in female. METHODS: A total of 126 female patients with sign and symptoms of lower urinary tract voiding dysfunction underwent VUD from December 2008 to January 2011 in Beijing Chaoyang Hospital. The causes of voiding dysfunction were analyzed based on VUD findings. RESULTS: Neurogenic voiding dysfunction was found in 30 patients (23...
May 2012: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
Stephen C D'Amico, William F Collins
In the rat, external urethral sphincter (EUS) activation during micturition consists of three sequential phases: 1) an increase in tonic EUS activity during passive filling and active contraction of the bladder (guarding reflex), 2) synchronized phasic activity (EUS bursting) associated with voiding, and 3) sustained tonic EUS activity that persists after bladder contraction. These phases are perturbed following spinal cord injury. The purpose of the present study was to characterize individual EUS motor unit (MU) patterns during micturition in the spinally intact and transected adult rat...
November 2012: Journal of Neurophysiology
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