Urine flow rate curve shapes and their descriptors

Li, Rui; Zhu, Qingyu; Mokhtar, Norrima; Gammie, Andrew

doi:10.1002/nau.23743

Cited by 10 publications

(4 citation statements)

References 28 publications

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“…The prevalence of bladder outlet obstruction (BOO) is more frequent in patients with T A B L E 1 Definitions used in the materials and method section. [10][11][12][13][14][15][16][17] Free uroflowmetric analysis urine flow curve pattern…”

Section: Resultsmentioning

confidence: 99%

“…All free uroflowmetric curve pattern and urodynamic diagnosis definitions are summarized in Table 1. [10][11][12][13][14][15][16][17] The voiding dysfunction diagnoses conformed to the ICS standards. 9 Two groups were formed according to the presence of POP.…”

Section: Methodsmentioning

confidence: 94%

“…All free uroflowmetric curve pattern and urodynamic diagnosis definitions are summarized in Table 1 10–17 . The voiding dysfunction diagnoses conformed to the ICS standards 9 …”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Voiding dynamics of pelvic organ prolapse: Large scale comparative study

Çeti̇nel

Kırlı

Önal

et al. 2023

Neurourology and Urodynamics

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To determine the voiding dynamics of the patients with pelvic organ prolapse (POP). Materials and methods:A retrospective patient file review was performed of 877 female patients with lower urinary tract symptoms. After exclusion criteria 373 female patients were eligible for the study. Two patient groups w/wo prolapse were identified. The symptoms, patient characteristics, patterns of free urine flow, and detrusor voiding pressure curves were compared between two groups. A comparison of the urodynamic findings between the subgroups (mild/moderate, severe, and w/o prolapse) was made and shown on a scatter plot graphics of P det Q max versus Q max as well.Results: A total of 373 patients with median age 54 (18-92), 189 (51%) had varying degrees and forms of POP while 184 (49%) did not have any prolapse (p < 0.003). Logistic regression analysis results showed that older age [p = 0.023, odds ratio (OR) = 1.01, confidence interval (

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 94%

See 1 more Smart Citation

Voiding dynamics of pelvic organ prolapse: Large scale comparative study

Çeti̇nel

Kırlı

Önal

et al. 2023

Neurourology and Urodynamics

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“…On uroflowmetry, the maximum urine flow was 35 ml/s, the median flow rate was 23.1 ml/s, and the voided percentage was 99. The volume voiding rate curve was bell-shaped, in the 25%-75% percentile (13). There was no significant residual urine.…”

Section: Clinical Case Presentationmentioning

confidence: 86%

Case Report: Bilateral syringocele in an adolescent—area of focus

Osipov,

Lebedev,

Uzintseva

et al. 2023

Front. Pediatr.

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RationaleCystic dilatation of the bulbourethral gland duct (Cowper's syringocele, CS) is a rare urethral pathology. No more than 150 cases of CS have been reported in the literature, of which the vast majority are children with a unilateral location. Bilateral CS has been reported in eight cases; however, detailed anatomy and clinical manifestations have not been reported. In this study, we report a case of bilateral CS with cavity junctions through the medial septum and its successful minimally invasive treatment in an adolescent.Case presentationA 16-year-old adolescent patient complained of painful urination and post-micturition urinary dribbling. Magnetic resonance imaging (MRI), urethrography, and ureteroscopy data enabled the establishment of the diagnosis and determination of the type of CS. The surgical treatment that was performed was endoscopic marsupialization of both CS chambers. At follow-up examination after 7 months, the complaints had ceased, and there was complete normalization of urination. The maximum flow rate during uroflowmetry was 35 ml per second, on voiding cystourethrography, the residual cavities were not contrasted, and there was no residual urine or bacteriuria.ConclusionMRI and retrograde urethrography made it possible to visualize changes in the bulbous part of the urethra, and ureteroscopy was the leading imaging modality. These studies was applied precisely because of the suspicion of the presence of a cavity communicating with the urethra. Minimally invasive surgical treatment for double-chamber CS was successful with no resulting complications.

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Reliability of Uroflowmetry Pattern Interpretation in Adult Women

Rickey,

Mueller,

Newman

et al. 2024

Neurourology and Urodynamics

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IntroductionUroflowmetry is often used to assess lower urinary tract symptoms (LUTS). Criteria for characterization of flow patterns are not well established, and subjective interpretation is the most common approach for flow curve classification. We assessed the reliability of uroflowmetry curve interpretation in adult women.Materials and MethodsUroflowmetry studies were obtained in 296 women who participated in an observational cohort study. Four investigators with expertise in female LUTS and urodynamics reviewed and categorized each tracing for interrater reliability. A random subset of 50 tracings was re‐reviewed by each investigator for intrarater reliability. The uroflowmetry tracings were rated using categories of continuous, continuous fluctuating, interrupted, and prolonged. Other parameters included flow rate, voided volume, time to maximum flow, and voiding time. Agreement between raters is summarized with kappa (k) statistics and percentage where at least three raters agreed.ResultsThe mean age of participants was 44.8 ± 18.3 years. Participant age categories were 18–24 years: 20%; 25–34 years: 17%; 35–64 years: 42%; 65+ years: 18%. Nine percent described their race as Asian, 31% Black, 62% White, and 89% were of non‐Hispanic ethnicity. The interrater reliability was highest for the continuous flow category (k = 0.65), 0.47 for prolonged, 0.41 for continuous fluctuating, and 0.39 for interrupted flow curves. Agreement among at least three raters occurred in 74.3% of uroflow curves (69% for continuous, 33% for continuous fluctuating, 23% for interrupted, and 25% for prolonged). For intrarater reliability, the mean k was 0.72 with a range of 0.57–0.85.ConclusionsCurrently accepted uroflowmetry pattern categories have fair to moderate interrater reliability, which is lower for flow curves that do not meet “continuous” criteria. Given the subjective nature of interpreting uroflowmetry data, more consistent and clear parameters may enhance reliability for use in research and as a screening tool for LUTS and voiding dysfunction.Trial RegistrationParent trial: Validation of Bladder Health Instrument for Evaluation in Women (VIEW); ClinicalTrials.gov ID: NCT04016298.

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Urine flow rate curve shapes and their descriptors

Abstract: This survey provides an overview of flow shape descriptors and their definitions. We suggest it is clearer to use only descriptors that describe shape alone, that is, normal, fluctuating, intermittent, and plateau, with comments on symmetry and Q .

Cited by 10 publications

References 28 publications

Voiding dynamics of pelvic organ prolapse: Large scale comparative study

Voiding dynamics of pelvic organ prolapse: Large scale comparative study

Case Report: Bilateral syringocele in an adolescent—area of focus

Reliability of Uroflowmetry Pattern Interpretation in Adult Women

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