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Rosier PFWM, Gammie A, Valdevenito JP, Speich J, Smith P, Sinha S. ICS-SUFU standard: Theory, terms, and recommendations for pressure-flow studies performance, analysis, and reporting. Part 2: Analysis of PFS, reporting, and diagnosis. Neurourol Urodyn 2023; 42:1603-1627. [PMID: 37139677 DOI: 10.1002/nau.25187] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 04/04/2023] [Indexed: 05/05/2023]
Abstract
AIMS The Working Group (WG), initiated by the International Continence Society (ICS) Standardisation Steering Committee and supported by the Society of Urodynamics, Female Pelvic Medicine and Urogenital Reconstruction, has revised the ICS Standard for pressure-flow studies of 1997. METHODS Based on the ICS standard for developing evidence-based standards, the WG developed this new ICS standard in the period from May 2020 to December 2022. A draft was posted on the ICS website in December 2022 to facilitate public discussion and the comments received have been incorporated into this final release. RESULTS The WG has recommended analysis principles for the diagnosis of voiding dysfunction for adult men and women without relevant neurological abnormalities. New standard terms and parameters for objective and continuous grading of urethral resistance (UR), bladder outflow obstruction (BOO) and detrusor voiding contraction (DVC) are introduced in this part 2 of the standard. The WG has summarized the theory and recommendations for the practice of pressure-flow study (PFS) for patients in part 1. A pressure-flow plot is recommended for the diagnosis of every patient, in addition to time-based graphs. Voided percentage and post void residual volume should always be included in PFS analysis and diagnosis. Only parameters that represent the ratio or subtraction of pressure and synchronous flow are recommended to quantify UR and only parameters that combine pressure and flow in a product or sum are recommended to quantify DVC. The ICS BOO index and the ICS detrusor contraction index are introduced in this part 2 as the standard. The WG has suggested clinical PFS dysfunction classes for male and female patients. A pressure-flow scatter graph including every patient's pdet at maximum flow (pdetQmax ) with maximum flow rate (Qmax ) point should be included in all scientific reports considering voiding dysfunction. CONCLUSION PFS is the gold standard used to objectively assess voiding function. Quantifying the dysfunction and grading of abnormalities are standardized for adult males and females.
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Affiliation(s)
- Peter F W M Rosier
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Andrew Gammie
- Department of Urology Clinical Research, Bristol Urological Institute, Bristol, UK
| | | | - John Speich
- Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Phillip Smith
- Department of Surgery, UConn Health School of Medicine, Farmington, Connecticut, USA
| | - Sanjay Sinha
- Department of Urology, Apollo Hospital, Hyderabad, Telangana, India
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Rosier PFWM, Valdevenito JP, Smith P, Sinha S, Speich J, Gammie A. ICS-SUFU standard: Theory, terms, and recommendations for pressure-flow studies performance, analysis, and reporting. Part 1: Background theory and practice. Neurourol Urodyn 2023; 42:1590-1602. [PMID: 37096828 DOI: 10.1002/nau.25192] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 04/04/2023] [Indexed: 04/26/2023]
Abstract
AIMS The working group (WG) initiated by the International Continence Society Standardization Steering Committee and supported by the Society of Urodynamics, Female Pelvic Medicine and Urogenital Reconstruction has revised the (1997) ICS Standard for pressure flow studies. METHODS Based on the ICS standard for developing evidence-based standards, the WG developed this new ICS standard in the period from May 2020 to December 2022. A draft was posted on the ICS website in January 2023 to facilitate public discussion and the comments received have been incorporated into this final release. RESULTS The WG summarizes the theory and recommends the practice and the terms used for the diagnosis of voiding dysfunction for adult female and male patients without relevant neurological abnormalities, in part 1 of this standard. The WG has also recommended standard principles and parameters for objective and continuous grading of urethral resistance and detrusor voiding contraction on the basis of pressure flow studies in part 2. The recommendations for practice in this part have also the aim to increase the understanding of the physiology as well as the psychology of voiding. The potential effects of the laboratory situation of the test on the voiding as well as the role of the urodynamicist in this regard are discussed. The WG has recommended to use for diagnosis only the voidings that are considered representative by the patient. CONCLUSION A pressure flow study is the gold standard to assess voiding function and to quantify dysfunction. This part of the standard explains the clinical background, gives recommendations for the execution of a pressure flow study and lists relevant terms, parameters, and units of measurements.
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Affiliation(s)
- Peter F W M Rosier
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Juan P Valdevenito
- Department of Urology, Hospital Clinico Universidad de Chile, Santiago, Chile
| | - Phillip Smith
- Department of Surgery, UConn Health School of Medicine, Farmington, Connecticut, USA
| | - Sanjay Sinha
- Department of Urology, Apollo Hospital, Hyderabad, India
| | - John Speich
- Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, Virginia, USA
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van Dort W, Rosier PFWM, Geurts BJ, van Steenbergen TRF, de Kort LMO. Quantifying bladder outflow obstruction in men: A comparison of four approximation methods exploiting large data samples. Neurourol Urodyn 2023; 42:1628-1638. [PMID: 37614044 DOI: 10.1002/nau.25270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 08/03/2023] [Accepted: 08/16/2023] [Indexed: 08/25/2023]
Abstract
INTRODUCTION A pressure flow study (PFS), part of the International Continence Society standard urodynamic test, is regarded gold standard for the classification and quantification of the urethral resistance (UR), expressed in the bladder outflow obstruction (BOO). For men with benign prostatic hyperplasia, the minimum urethral opening pressure (pmuo ), found at the end of the passive urethral resistance relation is considered the relevant parameter describing BOO. However, in clinical practice, direct measurements of pmuo are easily confounded by terminal dribbling. For that reason, alternative methods were developed to derive pmuo , and thereby assess BOO using the maximum urine flow rate (Qmax ) and the corresponding pressure (pdetQmax ) instead. These methods were never directly compared against a large data set. With the increasing variety of treatments becoming available more precise grading of UR may become of relevance. The current study compares four well-known methods to approximate pmuo and examines the relation between pmuo and pdetQmax . METHODS In total, 1717 high-quality PFS of men referred with lower urinary tract symptoms between 2003 and 2020 without earlier lower urinary tract surgery were included. From these recordings, pmuo was calculated according to three one-parameter methods. In addition, a three-parameter method (3PM) was used, based on a fit through the lowest pressure flank of the pressure-flow plot. The estimated pmuo 's were compared with a precisely assessed pmuo . A difference of <10 cmH2 O between an estimate and the actual pmuo was considered accurate. A comparison between the four approximation methods and the actual pmuo was visualized using a Bland-Altman plot. The differences between the actual and the estimated slope were assessed and dependency on pmuo was analyzed. RESULTS A total of 1717 studies were analyzed. In 55 (3.2%) PFS, 3PM analysis was impossible because all pressures after Qmax were higher than pdetQmax . The 3PM model was superior in predicting pmuo , with 75.9% of the approximations within a range of +10 or -10 cmH2 O of the actual pmuo . Moreover, pmuo according to urethral resistance A (URA) and linearized passive urethral resistance relation (linPURR) appear equally reliable. Bladder outflow obstruction index (BOOI) was significantly less accurate when compared to all others. Bland-Altman analysis showed a tendency of BOOI to overestimate pmuo in men with higher grades of UR, while URA tended to underestimate pmuo in those cases. The slope between pmuo and pdetQmax -Qmax increased with larger pmuo , as opposed to the constant relation proposed within BOOI. Although significant differences were found, the clinical relevance of those differences is not known. CONCLUSION Of the four methods to estimate pmuo and quantify BOO, 3PM was found the most accurate and BOOI the least accurate. As 3PM is not generally available and performance in lower quality PFS is unknown, linPURR is (for now) the most physiologically accurate.
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Affiliation(s)
- Wouter van Dort
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Peter F W M Rosier
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Bernard J Geurts
- Mathematics of Multiscale Modeling and Simulation, Department of Applied Mathematics, University of Twente, Enschede, The Netherlands
| | | | - Laetitia M O de Kort
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
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Tarcan T, Finazzi-Agrò E, Kessler TM, Serati M, Solomon E, Rosier PFWM. How should prospective research be designed to legitimately assess the value of urodynamic studies in female urinary incontinence? Neurourol Urodyn 2023; 42:1639-1646. [PMID: 37638391 DOI: 10.1002/nau.25273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 08/18/2023] [Indexed: 08/29/2023]
Abstract
AIMS Since formal evidence demonstrating the value of urodynamic studies (UDS) in functional urology remains elusive, we aimed to consider how best to design robust research for this purpose in female urinary incontinence. METHODS An expert group was convened to debate the following considerations: (a) precedents for formally proving the value of a gold standard diagnostic test, (b) key research principles, (c) defining a study population, (d) selecting endpoints, (e) defining interventional and controls arms, (f) blinding, (g) powering the study, and (h) duration of follow-up. In each case, we considered the strengths and weaknesses of different approaches in terms of scientific validity, ethical acceptability, practicality, and likelihood of bias. RESULTS We agreed that unlike evaluating therapies, attempting to judge the value of a diagnostic test based on eventual treatment success is conceptually flawed. Nonetheless, we explored the design of a hypothetical randomized controlled trial for this purpose, agreeing that: (1) the study population must sufficiently reflect its real-world counterpart; (2) clinical endpoints should include not only continence status but also other lower urinary tract symptoms and risks of management; (3) participants in the interventional arm should receive individualized management based on their UDS findings; (4) the most scientifically valid approach to the control arm-empiric treatment-is ethically problematic; (5) sufficient statistical power is imperative; and (6) ≥ 2 years' follow-up is needed to assess the long-term impact of management. CONCLUSIONS Although a perfect protocol does not exist, we recommend careful consideration of our observations when reflecting on past studies or planning new prospective research.
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Affiliation(s)
- Tufan Tarcan
- Department of Urology, Marmara University School of Medicine and Koç University School of Medicine, Istanbul, Turkey
| | - Enrico Finazzi-Agrò
- Department of Surgical Sciences, University of Rome Tor Vergata and UOSD Urologia, Policlinico Tor Vergata, Rome, Italy
| | - Thomas M Kessler
- Department of Neuro-Urology, Balgrist University Hospital, University of Zürich, Zürich, Switzerland
| | - Maurizio Serati
- Department of Obstetrics and Gynecology, University of Insubria, Varese, Italy
| | | | - Peter F W M Rosier
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
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Rosier PFWM. Letter to the editor referring to Ho FCS, He C, Yao HH, et al. Neurourol Urodyn. 2021;40(5):1078-1088: The term (chronic) nonobstructive urinary retention is meaningless. Neurourol Urodyn 2022; 41:1517-1518. [PMID: 35708127 DOI: 10.1002/nau.24964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 04/18/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Peter F W M Rosier
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
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Serati M, Braga A, Rosier PFWM, de Wachter S, Uren A, Finazzi-Agrò E. Acceptability and perceived value of urodynamics from the patient perspective: A narrative review. Neurourol Urodyn 2022; 41:1065-1073. [PMID: 35419867 PMCID: PMC9322284 DOI: 10.1002/nau.24932] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/12/2022] [Accepted: 03/22/2022] [Indexed: 11/10/2022]
Abstract
Background The value and application of urodynamic evaluation (UDS) have been a controversial topic in recent years. Gaining robust data on the patient viewpoint in this area is important since, even when UDS findings do not change the management plan, the objective diagnostic information gained from UDS may be valued by patients. Moreover, insights from UDS may empower treating physicians to counsel patients more effectively and manage their expectations regarding treatment outcomes. Objective This expert narrative review aims to analyze the findings of published studies in this area, looking at two topics in turn: (a) the tolerability and acceptability of the UDS procedure itself from the patient perspective and (b) patient perceptions of the clinical value of insights provided by UDS. Design, Setting, Participants, and Outcome Measurements An evidence assessment was conducted using selected articles from the literature reporting data on patients' perspectives on the tolerability, acceptability, utility, and value of the urodynamic investigation. Results and Limitations Although pain, discomfort, and infection risks are frequently used as a rationale to skip UDS when initial management fails, there is good evidence that, from the patients' perspective, the procedure is very well tolerated in most cases. There are only a few articles available that assess patient perceptions of the usefulness of UDS, but those that do exist appear to demonstrate that the insights gained from UDS are widely welcomed by patients in the interest of receiving a more tailored and personalized treatment approach. Conclusion From the patient perspective, UDS appears to be a well‐accepted and well‐tolerated diagnostic tool in patients with lower urinary tract symptoms, particularly when an appropriate explanation is provided before the examination. Our review also highlights that patients value the objective information provided by UDS and that this outweighs the temporary invasiveness of the test. This information is particularly relevant in light of the relative lack of evidence in the literature about patient expectations of specialist care in functional urology, which may have hindered progress with quality of care.
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Affiliation(s)
- Maurizio Serati
- Department of Obstetrics and Gynecology, University of Insubria, Varese, Italy
| | - Andrea Braga
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland.,Department of Obstetrics and Gynaecology, EOC - Beata Vergine Hospital, Mendrisio, Switzerland
| | - Peter F W M Rosier
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Stefan de Wachter
- Department of Urology, Faculty of Medicine and Health Sciences, University of Antwerp, Edegem, Belgium
| | - Alan Uren
- Bristol Urological Institute, Southmead Hospital, Bristol, UK
| | - Enrico Finazzi-Agrò
- Urology Unit, Department of Surgical Sciences, Tor Vergata University Hospital, University of Rome Tor Vergata, Rome, Italy
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Rosier PFWM. Author's response to Letter to the editor regarding the article: Head-to-head comparison of pressures during full cystometry, with clinical as well as in-depth signal-analysis, of air-filled catheters versus the ICS-standard water-filled catheters. Neurourol Urodyn 2021; 41:520-522. [PMID: 34888932 DOI: 10.1002/nau.24844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 11/22/2021] [Indexed: 11/10/2022]
Affiliation(s)
- Peter F W M Rosier
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
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Rosier PFWM. Referring to: Santis-Moya F, Calvo CI, Rojas T, Dell'Oro A, Baquedano P, Saavedra A. Urodynamic and clinical features in women with overactive bladder: When to suspect concomitant voiding dysfunction? Neurourol Urodyn. 2021 May 26. doi: 10.1002/nau.24688. Epub ahead of print. PMID: 34036625. Neurourol Urodyn 2021; 40:2050-2052. [PMID: 34369016 DOI: 10.1002/nau.24766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 12/29/2022]
Affiliation(s)
- Peter F W M Rosier
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
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Rosier PFWM. Head-to-head comparison of pressures during full cystometry, with clinical as well as in-depth signal-analysis, of air-filled catheters versus the ICS-standard water-filled catheters. Neurourol Urodyn 2021; 40:1908-1920. [PMID: 34363219 PMCID: PMC9291621 DOI: 10.1002/nau.24762] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 07/09/2021] [Accepted: 07/12/2021] [Indexed: 12/20/2022]
Abstract
Aims To compare in vivo differences of two catheter systems for urodynamics to further discover their measurement properties. Methods Side‐by‐side catheterization with two catheters for intravesical and abdominal pressure during full cystometry in 36 prospectively recruited patients with analysis of mean and absolute differences at urodynamic events and post hoc in‐depth signal analysis comparing the full pressure traces of both systems. Results The mean pressure differences at urodynamic events between air‐filled and water‐filled systems are small, however, with a large variation, without a systematic difference. The majority of the intersystem differences are significantly larger than 5 cmH2O. Further analysis showed that urodynamic event pressure differences of both systems at the start of the test were carried forward throughout the remainder of the test without subsequent or additional tendency to differ. Post hoc whole test signal analysis with pressures equalized from the first sample shows high cross‐correlation (>0.981) between the pressure signals per location (rectum and bladder) per test and almost zero‐time shift (<0.05 s) of all cystometry pressure samples. Conclusions We confirm earlier studies that showed random differences at events between air‐filled and water‐filled pressures during clinical urodynamic testing and confirm that these are intrinsic but not systematic—and still incompletely explained—offset‐baseline differences. We determined on closer full measurement analysis after equalizing, that both systems are similar in displaying urodynamic pressure variations and amplitudes. We also confirm that both systems require awareness of intrinsic measurement properties during urodynamic testing and especially may necessitate adjustment of pressure offsets into a quantitative diagnosis of a urodynamic test.
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Affiliation(s)
- Peter F W M Rosier
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
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Harvey MA, Chih HJ, Geoffrion R, Amir B, Bhide A, Miotla P, Rosier PFWM, Offiah I, Pal M, Alas AN. International Urogynecology Consultation Chapter 1 Committee 5: relationship of pelvic organ prolapse to associated pelvic floor dysfunction symptoms: lower urinary tract, bowel, sexual dysfunction and abdominopelvic pain. Int Urogynecol J 2021; 32:2575-2594. [PMID: 34338825 DOI: 10.1007/s00192-021-04941-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 07/11/2021] [Indexed: 12/13/2022]
Abstract
INTRODUCTION AND HYPOTHESIS This article from Chapter 1 of the International Urogynecology Consultation (IUC) on Pelvic Organ Prolapse (POP) establishes the prevalence of lower urinary tract disorders, bowel symptoms, vulvo-vaginal/lower abdominal/back pain and sexual dysfunction in women with POP. METHODS An international group of nine urogynecologists/urologists and one medical student performed a search of the literature using pre-specified search terms in Ovid, MEDLINE, Embase and CINAHL from January 2000 to March 2019. Publications were eliminated if not relevant or they did not include clear definitions of POP or the symptoms associated with POP. Definitions of POP needed to include both a physical examination finding using a validated examination technique and the complaint of a bothersome vaginal bulge. Symptoms were categorized into symptom groups for ease of evaluation. The Specialist Unit for Review Evidence (SURE) was used to evaluate for quality of the included articles. The resulting list of articles was used to determine the prevalence of various symptoms in women with POP. Cohort studies were used to evaluate for possible causation of POP as either causing or worsening the symptom category. RESULTS The original search yielded over 12,000 references, of which 50 were used. More than 50% of women with POP report lower urinary tract symptoms. Cohort studies suggest that women with POP have more obstructive lower urinary tract symptoms than women without POP. Pain described in various ways is frequently reported in women with POP, with low back pain being the most common pain symptom reported in 45% of women with POP. In cohort studies those with POP had more pain complaints than those without POP. Sexual dysfunction is reported by over half of women with POP and obstructed intercourse in 37-100% of women with POP. Approximately 40% of women have complaints of bowel symptoms. There was no difference in the median prevalence of bowel symptoms in those with and without POP in cohort studies. CONCLUSIONS The prevalence of lower urinary tract disorders, bowel symptoms, vulvo-vaginal/lower abdominal/back pain and sexual dysfunction in women with POP are common but inconsistently reported. There are few data on incidence of associated symptoms with POP, and cohort studies evaluating causality are rare or inconsistent. Obstructive voiding, lower abdominal and pelvic pain, and sexual dysfunction are most frequently associated with POP.
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Affiliation(s)
- Marie-Andrée Harvey
- Department of Obstetrics and Gynecology Queen's University, Victory 4, Kingston Health Science Centre, 76 Stuart St, Kingston, Ontario, K7L 2V7, Canada.
| | - Hui Ju Chih
- Department of Obstetrics and Gynecology Queen's University, Victory 4, Kingston Health Science Centre, 76 Stuart St, Kingston, Ontario, K7L 2V7, Canada
| | - Roxana Geoffrion
- Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, Canada
| | - Baharak Amir
- Department of Obstetrics & Gynecology, Division of Urogynecology and Pelvic Floor Surgery, Dalhousie University, Halifax, Canada
| | - Alka Bhide
- Department of Obstetrics and Gynecology, Imperial College Healthcare NHS Trust, London, UK
| | - Pawel Miotla
- 2nd Department of Gynecology, Medical University of Lublin, Lublin, Poland
| | - Peter F W M Rosier
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Ifeoma Offiah
- Department Obstetrics and Gynecology, Derriford Hospital Healthcare, NHS Trust, Plymouth, UK
| | - Manidip Pal
- Department of Obstetrics and Gynecology College of Medicine & JNM Hospital, WBUHS, Kalyani, India
| | - Alexandriah Nicole Alas
- Department of Obstetrics and Gynecology, University of Texas Health Sciences, San Antonio, TX, USA
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Brouwer TA, van Roon EN, Rosier PFWM, Kalkman CJ, Veeger N. Postoperative urinary retention: risk factors, bladder filling rate and time to catheterization: an observational study as part of a randomized controlled trial. Perioper Med (Lond) 2021; 10:2. [PMID: 33397468 PMCID: PMC7784306 DOI: 10.1186/s13741-020-00167-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 11/03/2020] [Indexed: 02/07/2023] Open
Abstract
Background Knowledge of risk factors for postoperative urinary retention may guide appropriate and timely urinary catheterization. We aimed to determine independent risk factors for postoperative urinary catheterization in general surgical patients. In addition, we calculated bladder filling rate and assessed the time to spontaneous voiding or catheterization. We used the patients previously determined individual maximum bladder capacity as threshold for urinary catheterization. Methods Risk factors for urinary catheterization were prospectively determined in 936 general surgical patients. Patients were at least 18 years of age and operated under general or spinal anesthesia without the need for an indwelling urinary catheter. Patients measured their maximum bladder capacity preoperatively at home, by voiding in a calibrated bowl after a strong urge that could no longer be ignored. Postoperatively, bladder volumes were assessed hourly with ultrasound. When patients reached their maximum bladder capacity and were unable to void, they were catheterized by the nursing staff. Bladder filling rate and time to catheterization were determined. Results Spinal anesthesia was the main independent modifiable risk factor for urinary catheterization (hyperbaric bupivacaine, relative risk 8.1, articaine RR 3.1). Unmodifiable risk factors were a maximum bladder capacity < 500 mL (RR 6.7), duration of surgery ≥ 60 min (RR 5.5), first scanned bladder volume at the Post Anesthesia Care Unit ≥250mL (RR 2.1), and age ≥ 60 years (RR 2.0). Urine production varied from 100 to 200 mL/h. Catheterization or spontaneous voiding took place approximately 4 h postoperatively. Conclusion Spinal anesthesia, longer surgery time, and older age are the main risk factors for urinary retention catheterization. Awareness of these risk factors, regularly bladder volume scanning (at least every 3 h) and using the individual maximum bladder capacity as volume threshold for urinary catheterization may avoid unnecessary urinary catheterization and will prevent bladder overdistention with the attendant risk of lower urinary tract injury. Trial registration Dutch Central Committee for Human Studies registered trial database: NL 21058.099.07. Current Controlled Trials database: Preventing Bladder Catheterization after an Operation under General or Spinal Anesthesia by Using the Patient’s Own Maximum Bladder Capacity as a Limit for Maximum Bladder Volume. ISRCTN97786497. Registered 18 July 2011 -Retrospectively registered. The original study started 19 May 2008, and ended 30 April 2009, when the last patient was included.
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Affiliation(s)
- Tammo A Brouwer
- Department of Anesthesiology, Medical Center Leeuwarden, Henri Dunantweg 2, PO Box 888, 8901, BR, Leeuwarden, The Netherlands.
| | - E N van Roon
- Department of Pharmacotherapy, Epidemiology & Economics, University of Groningen, Groningen, The Netherlands.,Department of Clinical Pharmacy & Pharmacology, Medical Center Leeuwarden, Henri Dunantweg 2, PO Box 888, 8901, BR, Leeuwarden, The Netherlands
| | - P F W M Rosier
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - C J Kalkman
- Division of Anesthesiology, Intensive Care and Emergency Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | - N Veeger
- Department of Epidemiology, Medical Center Leeuwarden, Leeuwarden, The Netherlands.,Department of Epidemiology, University Medical Center Groningen, Groningen, The Netherlands
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12
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Rosier PFWM. Good urodynamic practice: Pressure signal quality immediately after catheter insertion for cystometry with a water-filled pressure transducer system and its relevance for the ICS zero procedure. Neurourol Urodyn 2020; 40:319-325. [PMID: 33141486 PMCID: PMC7821252 DOI: 10.1002/nau.24561] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/09/2020] [Accepted: 10/19/2020] [Indexed: 12/02/2022]
Abstract
Aim This study aims to evaluate the intracorporeal pressures immediately after the insertion of the catheters for urodynamic testing with a water‐filled urodynamic pressure transducer system to determine the relevance of the International Continence Society (ICS) zeroing principles. Methods Here, a retrospective analysis of a random series of urodynamic recordings is performed. The initial pressures, immediately after the insertion of the catheters, have been compared with the pressures after some milliliters of filling and flushing away of the gel, used with insertion, and/or the mucus and debris from the inserted catheters. Differences of initially recorded intravesical and intrarectal pressures from those after flushing and filling are analyzed and associated with the ICS standard practice of zeroing. Results Statistically and clinically significant differences between the initial pressures and the pressures after filling and flushing are observed, with nonphysiological initial pressures in 62% of the studies. Some filling (20 ml or more in the bladder) and flushing of the pressure channels resulted in the registration of physiological pressures and synchronous response from both lines on abdominal pressure increases. Conclusions The pressure signal quality of a water‐filled urodynamic system immediately after catheter insertion is low with inaccurately displayed pressure values, but it changes to normal after flushing the pressure channels and some filling. Rezeroing of the intracorporeal pressures immediately after catheter insertion for cystometry is the inappropriate correction procedure that misleadingly modifies the false initial pressures, resulting in ongoing unrealistic urodynamic study pressures.
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Affiliation(s)
- Peter F W M Rosier
- Department of Urology, University Medical Centre Utrecht, Utrecht, The Netherlands
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Rosier PFWM. "Voiding dynamics in women with urinary incontinence but without voiding symptoms". Neurourol Urodyn 2020; 40:558-559. [PMID: 33098136 DOI: 10.1002/nau.24501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 08/27/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Peter F W M Rosier
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
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Gammie A, Speich JE, Damaser MS, Gajewski JB, Abrams P, Rosier PFWM, Arlandis S, Tarcan T, Finazzi Agrò E. What developments are needed to achieve less-invasive urodynamics? ICI-RS 2019. Neurourol Urodyn 2020; 39 Suppl 3:S36-S42. [PMID: 32022941 DOI: 10.1002/nau.24300] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 01/27/2020] [Indexed: 11/07/2022]
Abstract
AIMS To assess the state of technologies for urodynamics that are less invasive than standard cystometry and pressure-flow studies and to suggest areas needing research to improve this. METHODS A summary of a Think Tank debate held at the 2019 meeting of the International Consultation on Incontinence Research Society is provided, with subsequent analysis by the authors. Less-invasive techniques were summarized, classified by method, and possible developments considered. Discussions and recommendations were summarized by the co-chairs and edited into the form of this paper by all authors. RESULTS There is a full spectrum of technologies available for less-invasive assessment, ranging from simple uroflowmetry through imaging techniques to emerging complex technologies. Less-invasive diagnostics will not necessarily need to replace diagnosis by, or even provide the same level of diagnostic accuracy as, invasive urodynamics. Rather than aiming for a technique that is merely less invasive, the priority is to develop methods that are either as accurate as current invasive methods, or spare patients from the necessity of invasive methods by improving early triaging. CONCLUSIONS Technologies offering less-invasive urodynamic measurement of specific elements of function can be potentially beneficial. Less-invasive techniques may sometimes be useful as an adjunct to invasive urodynamics. The potential for current less-invasive tests to completely replace invasive urodynamic testing is considered, however, to be low. Less-invasive techniques must, therefore, be tested as screening/triaging tools, with the aim to spare some patients from invasive urodynamics early in the treatment pathway.
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Affiliation(s)
- Andrew Gammie
- Bristol Urological Institute, Southmead Hospital, Bristol, UK
| | - John E Speich
- Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University College of Engineering, Richmond, Virginia
| | - Margot S Damaser
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio
| | - Jerzy B Gajewski
- Department of Urology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Paul Abrams
- Bristol Urological Institute, Southmead Hospital, Bristol, UK
| | | | | | - Tufan Tarcan
- Department of Urology, Marmara University School of Medicine, İstanbul, Turkey
- Department of Urology, Koç University School of Medicine, Istanbul, Turkey
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Rosier PFWM. Critical steps in developing professional standards for the International Continence Society. Neurourol Urodyn 2019; 37:S69-S74. [PMID: 30614064 DOI: 10.1002/nau.23779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 07/05/2018] [Indexed: 11/11/2022]
Abstract
AIMS Standardization on the basis of systematic assessment of evidence has become an indispensable element of modern healthcare. International Continence Society (ICS) has initiated and produced extremely well cited standardization documents. The process of standardization is recently depicted in a published manuscript, to keep up with modern society healthcare demands. METHODS A narrative review of the ICS history and current state of standardizations for the terms, assessment and the management of patients with lower urinary tract dysfunction. RESULTS This article highlights the philosophy and the historical context of standardization and explains the core elements of modern day standardization. The article also demonstrates the scientific relevance of the ICS standards, on the basis of reference-counts. CONCLUSION The history and the relevance of ICS standards are summarized.
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Affiliation(s)
- Peter F W M Rosier
- Functional Urology, Department of Urology C04.236, University Medical Center Utrecht, Utrecht, The Netherlands
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Wyndaele M, Rosier PFWM. Basics of videourodynamics for adult patients with lower urinary tract dysfunction. Neurourol Urodyn 2019; 37:S61-S66. [PMID: 30614055 DOI: 10.1002/nau.23778] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 07/11/2018] [Indexed: 11/06/2022]
Abstract
AIMS Videourodynamics is the addition of imaging to invasive urodynamics and one of the methods to ensure objective diagnosis in persons with signs or symptoms of lower urinary tract dysfunction. This manuscript has the aim to outline the basics of the practice of videourodynamics and to elementary explain interpretation of the results. METHODS Literature sources and expert opinion were arranged to provide the reader with an introductory overview of current knowledge. RESULTS Videourodynamics was-like most diagnostics in health care-introduced on the basis of plausibility and expert conviction but has stood the test of time. Videourodynamics has, especially in patients with congenital or acquired neurogenic dysfunction of the lower urinary tract, undisputedly although not precisely quantifiable, added to (lower urinary tract) health care quality. CONCLUSION The manuscript summarizes the basic elements of indication, practice, and interpretation of videourodynamics.
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Affiliation(s)
- Michel Wyndaele
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Peter F W M Rosier
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
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Rosier PFWM, Kuo HC, De Gennaro M, Gammie A, Finazzi Agro E, Kakizaki H, Hashim H, Toozs-Hobson P. International Consultation on Incontinence 2016; Executive summary: Urodynamic testing. Neurourol Urodyn 2018; 38:545-552. [PMID: 30576004 DOI: 10.1002/nau.23903] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 07/01/2018] [Indexed: 11/10/2022]
Abstract
AIMS The International Consultation on Incontinence has published an update of the recommendations for the diagnosis and management of urine incontinence (ICI2016). This manuscript summarizes the consultations committee-recommendations with regard to urodynamic assessment. METHODS Expert consensus on the basis of structured evidence assessment has been the basis of the consultations publication and has been summarized by the committee for this manuscript. RESULTS Patients that are not satisfied with their initial management on the basis of their reported signs and symptoms of urinary incontinence, as well as all patients with neurological abnormalities that are potentially relevant for the function of the lower urinary tract, may very likely profit from objective diagnosis and staging and grading of their dysfunction, with urodynamic testing, regardless their age, vulnerability and/or comorbidities. The principles and technical innovations as well as the principal recommendations for the utilization of (invasive) urodynamic assessment for women, men, children, and vulnerable elderly, with or without neurogenic lower urinary tract dysfunction with urinary incontinence are provided in this abbreviated ICI recommendations-document. CONCLUSIONS The ICI2016 committee on urodynamics presents an executive summary of the most important reasons and recommendations for the use of urodynamic investigations for patients with urinary incontinence.
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Affiliation(s)
- Peter F W M Rosier
- Department of Urology, University Medical Center, Utrecht, The Netherlands
| | - Hann-Chorng Kuo
- Department of Urology, Buddhist Tzu Chi General Hospital, Hualien, Taiwan
| | - Mario De Gennaro
- Department of Nephrology-Urology Pediatric Ospedale Pediatrico Bambino Gesù, Rome, Italy
| | - Andrew Gammie
- Bristol Urological Institute, Bristol, United Kingdom
| | | | - Hidehiro Kakizaki
- Department of Renal and Urologic Surgery, Asahikawa Medical University, Asahikawa, Japan
| | - Hashim Hashim
- Bristol Urological Institute, Bristol, United Kingdom
| | - Philip Toozs-Hobson
- Department of Gynaecology and Pelvic Floor Medicine, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
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Rosier PFWM. Re: Drake M.J.: Fundamentals of terminology in lower urinary tract function. Neurourol Urodyn. 2018; 37:S13‐9. doi: 10.1002/nau.23768. Neurourol Urodyn 2018; 38:868-870. [DOI: 10.1002/nau.23856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 09/20/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Peter F. W. M. Rosier
- Department of UrologySenior Lecturer Functional Urology and NeurourologyUniversity Medical Center UtrechtUtrechtThe Netherlands
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Wen JG, Djurhuus JC, Rosier PFWM, Bauer SB. ICS educational module: Pressure flow study in children. Neurourol Urodyn 2018; 37:2311-2314. [PMID: 29931789 DOI: 10.1002/nau.23730] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 05/14/2018] [Indexed: 11/09/2022]
Abstract
AIMS To introduce the standard procedure and results interpretation of pressure/flow study (PFS) in children. METHODS The literature on PFS in children in PubMed for the last 20 years was reviewed. The updated knowledge on PFS in children in children regarding indication, preparation, technique, and interpretation were summarized. RESULTS This educational module explains when and how to do a PFS and how to analyze the results. All requirements and instructions for the PFS in children described in this document follow ICS reports on Good Urodynamic Practice and urodynamic equipment performance as well as guidelines from the ICCS. PFS can be obtained subsequent to filling cystometry with no specific additional equipment (apart from a flowmeter) or patient preparation needed. It requires both vesical and intra-abdominal pressures being recorded. Information from clinical history, physical examination, voiding diaries, and free uroflowmetry with or without perineal patch EMG and pertinent imaging results should be available before undertaking urodynamic testing. CONCLUSIONS Following ICS and ICCS guidelines, PFS is an easy procedure and a useful tool to provide information on voiding function in children.
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Affiliation(s)
- Jian G Wen
- Pediatric Urodynamic Centre, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Department of Pediatric Surgery, The First Affiliated Hospital of Xinxiang Medical University, Weihui, China
| | - Jens C Djurhuus
- Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark
| | - Peter F W M Rosier
- Department of Urology, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Stuart B Bauer
- Department of Urology, Boston Children's Hospital, Boston, Massachusetts
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Guralnick ML, Fritel X, Tarcan T, Espuna-Pons M, Rosier PFWM. ICS Educational Module: Cough stress test in the evaluation of female urinary incontinence: Introducing the ICS-Uniform Cough Stress Test. Neurourol Urodyn 2018; 37:1849-1855. [DOI: 10.1002/nau.23519] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 01/08/2018] [Indexed: 01/06/2023]
Affiliation(s)
| | - Xavier Fritel
- Faculté de Médecine et Pharmacie; Université de Poitiers; Poitiers France
| | - Tufan Tarcan
- Marmara University School of Medicine; Istanbul Turkey
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Rosier PFWM. Re: The article “Detrusor pressures in urodynamic studies during voiding in women”. Int Urogynecol J 2018; 29:1071. [DOI: 10.1007/s00192-018-3665-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 04/25/2018] [Indexed: 10/16/2022]
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Valentini FA, Rosier PFWM, Nelson PP. Are nomograms based on free uroflows helpful to evaluate urethral obstruction in men? Neurourol Urodyn 2017; 37:1019-1023. [PMID: 28767172 DOI: 10.1002/nau.23385] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Accepted: 07/11/2017] [Indexed: 11/06/2022]
Abstract
AIMS It was demonstrated earlier that reduced maximum flow-rate (Qmax ) during intubated flow (IF) in women may be the consequence of a urethral reflex. Over-estimation of outflow obstruction is the consequence. Our hypothesis, that a similar phenomenon could occur in men, is tested using results of a free uroflow (FF) preceding an IF to eventually correct the Abrams-Griffiths (AG) number. METHODS Retrospectively, analysis of 441 urodynamic studies of men suspected of bladder outflow obstruction (BOO) was performed. The Valentini-Besson-Nelson model links outflow obstruction (parameter pucp) and the detrusor contractility (parameter k) to Qmax and detrusor pressure at Qmax (pdet.Qmax ). AG and pucp are strongly correlated. Contractility is described by a graphical representation (a nomogram) which numerical fitting is an algebraic equation f(Qmax ,pdet.Qmax ). Nomograms based on IF allowed computing a calculated AG (corr-AG) on the basis of free flow. RESULTS Included files (N = 362) had filling volume during FF > 90 mL; corr-AG was compared to AG. When Qmax.FF > 1.5*Qmax.IF (N = 114), 61 patients (53.5%) were found less obstructed with corr-AG, no one more obstructed. Increased BOO could be the result of a urethral reflex during IF and AG gave an overestimation. When Qmax.FF < 1.5*Qmax.IF (N = 248), only 39 patients (12.1%) were found less obstructed with corr-AG and 28 (11.3%) more obstructed. CONCLUSION To obtain a reliable evaluation of BOO in men, it is suitable to perform a FF before IF. A corrected AG (corr-AG) obtained from IF analysis and nomograms based on FF may be helpful for evaluation of BOO in men.
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Affiliation(s)
- Françoise A Valentini
- Université Pierre et Marie Curie, Paris, France.,Physical Medicine and Rehabilitation, Hôpital Rothschild, Paris, France
| | - Peter F W M Rosier
- Department of Urology Physical, University Medical Centre Utrecht, Utrecht, The Netherlands
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Vahabi B, Wagg AS, Rosier PFWM, Rademakers KLJ, Denys MA, Pontari M, Lovick T, Valentini FA, Nelson PP, Andersson KE, Fry CH. Can we define and characterize the aging lower urinary tract?-ICI-RS 2015. Neurourol Urodyn 2017; 36:854-858. [PMID: 28444710 DOI: 10.1002/nau.23035] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 04/18/2016] [Indexed: 12/13/2022]
Abstract
The prevalence of lower urinary tract (LUT) symptoms increases with age but the etiology is unknown. This article aims to identify research directions that clarify the basis of this association. The initial question is whether biological age is the variable of interest or a time-dependent accumulation of factors that impact on LUT function at rates that differ between individuals. In particular, the accumulation of conditions or agents due to inflammatory states or tissue ischemia is important. Much of the above has been concerned with changes to bladder function and morphology. However, the outflow tract function is also affected, in particular changes to the function of external sphincter skeletal muscle and associated sacral motor nerve control. Nocturia is a cardinal symptom of LUT dysfunction and is more prevalent with aging. Urine production is determined by diurnal changes to the production of certain hormones as well as arterial blood pressure and such diurnal rhythms are blunted in subjects with nocturia, but the causal links remain to be elucidated. Changes to the central nervous control of LUT function with age are also increasingly recognized, whether in mid-brain/brainstem regions that directly affect LUT function or in higher centers that determine psycho-social and emotional factors impinging on the LUT. In particular, the linkage between increasing white matter hyperintensities and LUT dysfunction during aging is recognized but not understood. Overall, a more rational approach is being developed to link LUT dysfunction with factors that accumulate with age, however, the precise causal pathways remain to be characterized. Neurourol. Urodynam. 36:854-858, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Bahareh Vahabi
- Department of Biological, Biomedical and Analytical Sciences, University of the West of England, Bristol, United Kingdom
| | - Adrian S Wagg
- Division of Geriatric Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Peter F W M Rosier
- Department of Urology, University Medical Center, Utrecht, The Netherlands
| | | | | | | | - Thelma Lovick
- School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, United Kingdom
| | | | - Pierre P Nelson
- ER6-Universite Pierre et Marie Curie (Paris 06), Paris, France
| | | | - Christopher H Fry
- School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, United Kingdom
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Rademakers K, Drake MJ, Gammie A, Djurhuus JC, Rosier PFWM, Abrams P, Harding C. Male bladder outlet obstruction: Time to re-evaluate the definition and reconsider our diagnostic pathway? ICI-RS 2015. Neurourol Urodyn 2017; 36:894-901. [PMID: 28444709 DOI: 10.1002/nau.23178] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 11/01/2016] [Indexed: 11/09/2022]
Abstract
The diagnosis of bladder outlet obstruction (BOO) in the male is dependent on measurements of pressure and flow made during urodynamic studies. The procedure of urodynamics and the indices used to delineate BOO are well standardized largely as a result of the work of the International Continence Society. The clinical utility of the diagnosis of BOO is however, less well defined and there are several shortcomings and gaps in the currently available medical literature. Consequently the International Consultation on Incontinence Research Society (ICI-RS) held a think tank session in 2015 entitled "Male bladder outlet obstruction: Time to re-evaluate the definition and reconsider our diagnostic pathway?" This manuscript details the discussions that took place within that think tank setting out the pros and cons of the current definition of BOO and exploring alternative clinical tests (alone or in combination) which may be useful in the future investigation of male patients with lower urinary tract symptoms. The think tank panel concluded that pressure-flow studies remain the diagnostic gold-standard for BOO although there is still a lack of high quality evidence. Newer, less invasive, investigations have shown promise in terms of diagnostic accuracy for BOO but similar criticisms can be levelled against these tests. Therefore, the think tank suggests further research with regard to these alternative indicators to determine their clinical utility.
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Affiliation(s)
- Kevin Rademakers
- Department of Urology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Marcus J Drake
- Bristol Urological Institute, Southmead Hospital, Bristol, United Kingdom
| | - Andrew Gammie
- Bristol Urological Institute, Southmead Hospital, Bristol, United Kingdom
| | | | | | - Paul Abrams
- Bristol Urological Institute, Southmead Hospital, Bristol, United Kingdom
| | - Christopher Harding
- Department of Urology, Freeman Hospital, Newcastle Upon-Tyne, United Kingdom
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Krhut J, Zachoval R, Rosier PFWM, Shelly B, Zvara P. ICS Educational Module: Electromyography in the assessment and therapy of lower urinary tract dysfunction in adults. Neurourol Urodyn 2017; 37:27-32. [PMID: 28419532 DOI: 10.1002/nau.23278] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 03/10/2017] [Indexed: 12/15/2022]
Abstract
AIM To present the teaching module "Electromyography in the assessment and therapy of lower urinary tract dysfunction in adults." This teaching module embodies a presentation, in combination with this manuscript. This manuscript serves as a scientific background review; the evidence base made available on ICS website to summarize current knowledge and recommendations. METHODS This review has been prepared by a Working Group of The ICS Urodynamics Committee. The methodology used included comprehensive literature review, consensus formation by the members of the Working Group, and review by members of the ICS Urodynamics Committee core panel. RESULTS Electromyography (EMG) is a method to record spontaneous or artificially induced electrical activity of the nerve-muscle unit or to test nerve conductivity. EMG of the anal sphincter using surface electrode is most widely used screening technique to detect detrusor-sphincter dyssynergia in urology. It is non-invasive and easy to perform. EMG methods using needle electrodes are reserved for diagnostics in well selected group of mainly neurogenic patients. These methods require expertise in the field of general EMG and are usually performed by neurologist and neuro-physiologist. The evidence in many aspects of use of EMG in urology remains sparse. CONCLUSIONS Currently EMG methods rarely play a decision making role in selecting proper treatment of lower urinary tract dysfunction. With the current efforts to improve phenotyping of these patients in order to provide individualized treatment, the role of EMG could increase.
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Affiliation(s)
- Jan Krhut
- Department of Urology, Ostrava University, University Hospital, Ostrava, Czech Republic
| | - Roman Zachoval
- Department of Urology, Thomayer Hospital and 1st and 3rd Faculty of Medicine of Charles University, Prague, Czech Republic
| | - Peter F W M Rosier
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Beth Shelly
- Beth Shelly Physical Therapy, Moline, Illinois
| | - Peter Zvara
- Department of Urology and Biomedical Laboratory, University of Southern Denmark, Odense, Denmark
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Sorel MR, Reitsma JB, Rosier PFWM, Bosch R, de Kort LM. Uroflowmetry in healthy women: A systematic review. Neurourol Urodyn 2017; 36:1954. [PMID: 28139860 DOI: 10.1002/nau.23220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 12/17/2016] [Indexed: 11/11/2022]
Affiliation(s)
| | - Johannes B Reitsma
- Department of Epidemiology, University Medical Center, Utrecht, The Netherlands
| | - Peter F W M Rosier
- Department of Urology, University Medical Center, Utrecht, The Netherlands
| | - Ruud Bosch
- Department of Urology, University Medical Center, Utrecht, The Netherlands
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de Graaf P, van der Linde EM, Rosier PFWM, Izeta A, Sievert KD, Bosch JLHR, de Kort LMO. Systematic Review to Compare Urothelium Differentiation with Urethral Epithelium Differentiation in Fetal Development, as a Basis for Tissue Engineering of the Male Urethra. Tissue Eng Part B Rev 2016; 23:257-267. [PMID: 27809709 DOI: 10.1089/ten.teb.2016.0352] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Tissue-engineered (TE) urethra is desirable in men with urethral disease (stricture or hypospadias) and shortage of local tissue. Although ideally a TE graft would contain urethral epithelium cells, currently, bladder epithelium (urothelium) is widely used, but morphologically different. Understanding the differences and similarities of urothelium and urethral epithelium could help design a protocol for in vitro generation of urethral epithelium to be used in TE grafts for the urethra. PURPOSE To understand the development toward urethral epithelium or urothelium to improve TE of the urethra. METHODS A literature search was done following PRISMA guidelines. Articles describing urethral epithelium and bladder urothelium development in laboratory animals and humans were selected. RESULTS Twenty-nine studies on development of urethral epithelium and 29 studies on development of urothelium were included. Both tissue linings derive from endoderm and although adult urothelium and urethral epithelium are characterized by different gene expression profiles, the signaling pathways underlying their development are similar, including Shh, BMP, Wnt, and FGF. The progenitor of the urothelium and the urethral epithelium is the early fetal urogenital sinus (UGS). The urethral plate and the urothelium are both formed from the p63+ cells of the UGS. Keratin 20 and uroplakins are exclusively expressed in urothelium, not in the urethral epithelium. Further research has to be done on unique markers for the urethral epithelium. CONCLUSION This review has summarized the current knowledge about embryonic development of urothelium versus urethral epithelium and especially focuses on the influencing factors that are potentially specific for the eventual morphological differences of both cell linings, to be a basis for developmental or tissue engineering of urethral tissue.
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Affiliation(s)
- Petra de Graaf
- 1 Department of Urology, University Medical Centre Utrecht , Utrecht, The Netherlands .,2 Regenerative Medicine Center Utrecht , Utrecht, The Netherlands
| | | | - Peter F W M Rosier
- 1 Department of Urology, University Medical Centre Utrecht , Utrecht, The Netherlands
| | - Ander Izeta
- 3 Tissue Engineering Laboratory, Bioengineering Area, Instituto Biodonostia, Hospital Universitario Donostia , San Sebastián, Spain .,4 Department of Biomedical Engineering, School of Engineering, Tecnun-University of Navarra , San Sebastián, Spain
| | | | - J L H Ruud Bosch
- 1 Department of Urology, University Medical Centre Utrecht , Utrecht, The Netherlands
| | - Laetitia M O de Kort
- 1 Department of Urology, University Medical Centre Utrecht , Utrecht, The Netherlands
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Abrams P, Damaser MS, Niblett P, Rosier PFWM, Toozs-Hobson P, Hosker G, Kightley R, Gammie A. Air filled, including "air-charged," catheters in urodynamic studies: does the evidence justify their use? Neurourol Urodyn 2016; 36:1234-1242. [PMID: 27580083 DOI: 10.1002/nau.23108] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 08/11/2016] [Indexed: 12/20/2022]
Abstract
AIMS Air filled catheters (AFCs) have been actively marketed for the past few years and in some geographic areas are widely used. However, as the scientific basis for introduction of this technology for pressure measurement in urodynamics was not clear, a study group examined the evidence. METHODS A search of the peer reviewed literature was carried out. RESULTS Four papers were identified, of which two were laboratory experiments and two were clinical papers, in female patients, that compared the pressures recorded by AFCs and those recorded using the traditional water filled catheters (WFCs). These data show that there are differences between the pressures measured by the two types of catheters. As yet, the reasons for these differences are not clear. CONCLUSIONS There should be further systematic laboratory and clinical research before AFCs can be recommended for routine clinical use. We would recommend that a professional worldwide multidisciplinary scientific society, such as the International Continence Society, should work with manufacturers and regulatory bodies to ensure that this urodynamic method is properly scientifically evaluated, in the wider interests of patient safety.
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Affiliation(s)
- Paul Abrams
- Bristol Urological Institute, Southmead Hospital, Bristol, UK
| | - Margot S Damaser
- Department of Biomed Engineering, Cleveland Clinic, Cleveland, Ohio.,Research Service, Louis Stokes Cleveland Veterans Administration Medical Center, Cleveland, Ohio
| | | | - Peter F W M Rosier
- University Medical Centre Utrecht, Heidelberglaan, Utrecht, The Netherlands
| | | | - Gordon Hosker
- (Retired) The Warrell Unit, St Marys Hospital, Manchester, UK
| | - Robert Kightley
- Department of Medical Physics and Biomedical Engineering, University College London Hospitals NHS Foundation Trust, London, UK
| | - Andrew Gammie
- Bristol Urological Institute, Southmead Hospital, Bristol, UK
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Kummeling MTM, Rosier PFWM, Elzevier HW, Groenendijk PM. Continuous urethral pressure measurements; measurement techniques; pressure variations; clinical interpretations; and clinical relevance. A Systematic Literature Analysis. Neurourol Urodyn 2015; 36:51-56. [PMID: 26509358 DOI: 10.1002/nau.22913] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 10/07/2015] [Indexed: 11/07/2022]
Abstract
AIMS The clinical relevance of urethral pressure variations (UPV) in the pathophysiology of over active bladder syndrome (OAB) has remained controversial to date. Some studies report an association with OAB and/or detrusor over activity (DO). Recently the International Consultation on Incontinence-Research Society recommended new clinical research to be performed on this subject. We provide a systematic review of the literature to specify this recommendation. METHODS Literature search was performed in PubMed, Embase, Web of Science, Cochrane, Central, Cinahl, Academic Science Premier, Science Direct, and Wiley Online using a sensitive search string combination. All authors independently reviewed and scored full text papers and consensus about methodological quality was obtained according to Oxford Level of Evidence (LoE). RESULTS Four hundred eighty seven abstracts were screened, 25 papers met all predefined inclusion selection criteria. Incidence figures of UPV varied between 2% and 95%. Studies are of poor methodological quality with Oxford LoE scores of 3B and 4. Measurement methods and techniques show a large variety. The above mentioned association of DO/OAB with UPV is however frequently reported. CONCLUSION There exists a phenomenon of UPV, apart from DO, which may be a separate entity within OAB syndrome. Large variation in measurement techniques and patient populations hinders fundamental research as well as clinical progress. Clinical relevance of UPV and consequences for treatment therefore are yet to be established. Future prospective research with well-defined patient population and standardised urodynamic measurement techniques is needed. Results of standardized and objective evaluations should be compared to clinical signs and symptoms by validated questionnaires. Neurourol. Urodynam. 36:51-56, 2017. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
| | - Peter F W M Rosier
- Department of Urology, University Medical Centre Utrecht, The Hague, The Netherlands
| | - Henk W Elzevier
- Department of Urology, Leiden University Medical Centre, The Hague, The Netherlands
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Veenboer PW, Bosch JLHR, Rosier PFWM, Dik P, van Asbeck FWA, de Jong TPVM, de Kort LMO. Cross-sectional study of determinants of upper and lower urinary tract outcomes in adults with spinal dysraphism--new recommendations for urodynamic followup guidelines? J Urol 2014; 192:477-82. [PMID: 24603105 DOI: 10.1016/j.juro.2014.02.2566] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/26/2014] [Indexed: 10/25/2022]
Abstract
PURPOSE Although annual urodynamic study is currently recommended for all adults with spinal dysraphism, this followup might be overly intensive. Therefore, in this cross-sectional study we examine which determinants of upper and lower urinary tract outcomes are associated with relevant urodynamic findings. MATERIALS AND METHODS All patients visiting our specialized outpatient clinic for adults with spinal dysraphism during a 26-month period underwent evaluation of the lower urinary tract by (video)urodynamic study. High end filling pressure (40 cm H2O or greater), poor compliance (less than 10 ml/cm H2O) and high detrusor leak point pressure (40 cm H2O or greater) were classified as relevant findings and together called unsafe bladder. Multivariable analysis was performed to reveal determinants of unsafe bladder (type of spinal dysraphism, being wheelchair bound, hydrocephalus, urological symptoms and renal dilatation) and diagnostic accuracy was calculated for the significant determinants. RESULTS Of the 134 patients evaluated (median age 31.5 years) 120 underwent complete urodynamic study and were included in this study. In the multivariable model unsafe bladder was significantly associated with being wheelchair bound (OR 5.36, p=0.008). In patients without symptoms who were not wheelchair bound the negative predictive value of urodynamic study for finding an unsafe bladder was high (1.00). CONCLUSIONS If an adult patient with spinal dysraphism is not wheelchair bound, unfavorable findings at urodynamic study are unlikely. If these patients are asymptomatic, these findings are even more unlikely. In these patients it is probably not necessary to perform urodynamic study as frequently as is currently recommended. Patients with an unsafe bladder need active surveillance and treatment when upper tract safety is threatened.
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Affiliation(s)
- Paul W Veenboer
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands.
| | - J L H Ruud Bosch
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Peter F W M Rosier
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Pieter Dik
- Department of Pediatric Urology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Floris W A van Asbeck
- Department of Rehabilitation, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Tom P V M de Jong
- Department of Pediatric Urology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, The Netherlands; Department of Pediatric Urology, Elizabeth Children's Hospital, Academisch Medisch Centrum Amsterdam, Amsterdam, The Netherlands
| | - Laetitia M O de Kort
- Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands
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de Kort LMO, Kok ET, Jonges TN, Rosier PFWM, Bosch JLHR. Urodynamic effects of transrectal intraprostatic Ona botulinum toxin A injections for symptomatic benign prostatic hyperplasia. Urology 2012; 80:889-93. [PMID: 22854138 DOI: 10.1016/j.urology.2012.06.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 05/26/2012] [Accepted: 06/02/2012] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To investigate urodynamic, symptomatic, and histologic effects of intraprostatic injection with Ona botulinum toxin A for benign prostatic hyperplasia. METHODS Patients >55 years with symptomatic benign prostatic hyperplasia failing medical therapy were treated. Inclusion criteria were International Prostate Symptom Score >7, prostate volume 30-50 cm(3), and urodynamic bladder outlet obstruction >Schäfer grade 2. A transrectal intraprostatic injection of 200 IU Ona botulinum toxin A was given. Filling cystometry and pressure flow studies were performed at 3, 6, and 12 months post injection. International Prostate Symptom Score, International Prostate Symptom Score quality of life, prostate-specific antigen, and prostate volume were measured up until 12 months; prostate biopsies before and after Ona botulinum toxin A injection were done for histology and cell proliferation. RESULTS Fifteen men (mean age 64.9 years) were included. Ona botulinum toxin A injection was well tolerated with few complications. Postvoid residual improved (170 to 80 mL), but maximum flow rate and bladder outlet resistance parameters did not change during follow-up. International Prostate Symptom Score and International Prostate Symptom Score quality of life improved (22 to 13 and 5 to 2, respectively), whereas prostate-specific antigen and prostate volume remained unaltered. Cell proliferation did not decrease and in 37% and 64% of pre- and posttreatment biopsies, respectively, some degree of prostatitis was found. Ten of 15 patients eventually underwent transurethral prostate resection because of persisting symptoms. CONCLUSION Intraprostatic Ona botulinum toxin A for symptomatic benign prostatic hyperplasia did not affect urodynamic outcomes, except for postvoid residual. Although symptom scores improved, we were not able to show change in prostate volume, prostate-specific antigen, or histologic outcomes. A placebo effect of intraprostatic Ona botulinum toxin A could not be ruled out.
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Affiliation(s)
- Laetitia M O de Kort
- Department of Urology, University Medical Center Utrecht, Utrecht, the Netherlands.
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Rosier PFWM. Re: usefulness of dynamic urethral resistance relation (DURR) measurement for differential diagnosis between static and dynamic urinary obstruction in male spinal cord injury patients. Neurourol urodyn 2012;31:549-55. Neurourol Urodyn 2012; 31:556. [PMID: 22396326 DOI: 10.1002/nau.21207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Accepted: 07/20/2011] [Indexed: 11/05/2022]
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Rosier PFWM, Gajewski JB, Sand PK, Szabó L, Capewell A, Hosker GL. Executive summary: The International Consultation on Incontinence 2008--Committee on: "Dynamic Testing"; for urinary incontinence and for fecal incontinence. Part 1: Innovations in urodynamic techniques and urodynamic testing for signs and symptoms of urinary incontinence in female patients. Neurourol Urodyn 2010; 29:140-5. [PMID: 19693949 DOI: 10.1002/nau.20764] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
AIMS The members of The International Consultation on Incontinence 2008 (Paris) Committee on Dynamic Testing' provide an executive summary of the chapter 'Dynamic Testing' that discusses (urodynamic) testing methods for patients with signs and or symptoms of urinary incontinence. Testing of patients with signs and or symptoms of faecal incontinence is also discussed. METHODS Evidence based and consensus committee report. RESULTS The chapter 'Dynamic Testing' is a continuation of previous Consultation-reports added with a new systematic literature search and expert discussion. Conclusions, based on the published evidence and recommendations, based on the integration of evidence with expert experience and discussion are provided separately, for transparency. CONCLUSION This first part of a series of three articles summarizes the committees recommendations about the innovations in urodynamic study techniques 'in general', about the test characteristics and normal values of urodynamic studies as well as the assessment of female with signs and or symptoms of incontinence and includes only the most recent and relevant literature references.
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Rosier PFWM. Re: Michael Müntener, Brigitte Schurch, Björn Wefer and André Reitz. Systemic Nitric Oxide Augmentation Leads to a Rapid Decrease of the Bladder Outlet Resistance in Healthy Men. Eur Urol 2006;50:112–117; discussion 117–118. Eur Urol 2007; 51:859; author reply 860. [PMID: 16982136 DOI: 10.1016/j.eururo.2006.08.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2006] [Accepted: 08/17/2006] [Indexed: 11/16/2022]
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van der Mast RC, Huyse FJ, Rosier PFWM. [Guideline 'Delirium']. Ned Tijdschr Geneeskd 2005; 149:1027-32. [PMID: 15909390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The Dutch Association of Psychiatry, together with the Dutch Association of Clinical Geriatrics and with methodological support from the Dutch Institute for Healthcare Improvement (CBO) has developed a guideline for the optimal diagnosis, treatment and prevention of delirium. Delirium is caused by somatic illness or the use of medication, drugs or alcohol. Delirium is common among the somatically ill admitted to a general hospital and is associated with increased morbidity and mortality. Important predisposing factors for delirium are: age > or =70 years, cognitive disturbances, sensory impairments, problems in daily activities, and the use of alcohol and opiates. Precipitating factors that may provoke delirium are: infection, fever, dehydration, serum electrolyte imbalance, polypharmacy, and the use of psychotropic medication, particularly anticholinergic drugs. Detection, diagnosis, and assessment of the severity of delirium are based on clinical examination, case history, observation, mental status examination including tests of cognitive function, and diagnosis of underlying somatic diseases. For daily practice, measurement tools are not necessary, nor are laboratory or imaging tests, such as electroencephalography. Haloperidol is the treatment of first choice for delirium due to somatic illness, except in patients with delirium due to drug use or medication, Parkinson's disease or Lewy body dementia. In cases of concurrent alcohol withdrawal syndrome, delirium may be treated with haloperidol and a benzodiazepine and B-vitamins. Medical and environmental interventions have been shown to reduce the incidence and duration of delirium.
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Affiliation(s)
- R C van der Mast
- Leids Universitair Medisch Centrum, afd. Psychiatrie BIP, Postbus 96oo, 2300 RC, Leiden.
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Abstract
BACKGROUND The objective of the current study was to evaluate the applicability of liquid-based cytology in the Netherlands population screening program for cervical cancer. METHODS A special committee performed an evaluation of all the available literature. Two methods were investigated: the AutoCytePrep system (currently known as ShurePath-system; TriPath Imaging, Burlington, NC) and the ThinPrep system (Cytyc, Boxborough, MA) for the detection of squamous epithelial abnormalities. All literature up to May 2000 was evaluated. RESULTS For the AutoCytePrep system, there were indications that the detection rate for atypical squamous cells of undetermined significance (ASCUS) or higher had lower sensitivity compared with conventional screening. No definitive statement could be made concerning the value of the AutoCytePrep system for the detection rate of low-grade squamous intraepithelial lesions (LSIL) or higher and high-grade squamous intraepithelial lesions (HSIL) or higher because of conflicting results. For the ThinPrep system, there were indications that the detection rate of ASCUS or higher had a higher detection rate compared with conventional screening, with slightly lower specificity. It is likely that the detection rate of LSIL or higher with the ThinPrep system had greater sensitivity compared with conventional screening with almost unchanged specificity. In addition, it is likely that the detection rate of HSIL or higher with the ThinPrep system had a higher detection rate and greater absolute sensitivity compared with conventional screening with almost unchanged relative and absolute specificity. CONCLUSIONS Further research that complies with the standards stated in the current study will be necessary to evaluate the applicability of the AutoCytePrep method. Further evaluation of the costs and benefits of the ThinPrep method should be undertaken to decide definitively whether to implement this method in the Netherlands population screening program.
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