Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Urodynamic Studies: Uroflowmetry01:19

Urodynamic Studies: Uroflowmetry

83
Uroflowmetry is a non-invasive urodynamic test designed to measure various aspects of urination, including volume, flow rate, and the time to void. This test is crucial for diagnosing and assessing conditions such as bladder outlet obstruction, bladder dysfunction, incomplete bladder emptying, incontinence, and urinary tract blockages caused by benign prostatic hyperplasia (BPH) and urethral strictures.Pre-Test Instructions:Before a uroflowmetry test, patients are typically advised to drink...
83
Imaging Studies VI: Voiding Cystourethrography and Cystography01:22

Imaging Studies VI: Voiding Cystourethrography and Cystography

32
Voiding Cystourethrography (VCUG) and Cystography are specialized radiographic procedures used to examine the structure and function of the bladder and urethra.Voiding Cystourethrography (VCUG)A Voiding Cystourethrogram (VCUG) is a diagnostic imaging procedure that assesses the anatomy and function of the lower urinary tract. It focuses on the bladder, bladder neck, and urethra, helping detect abnormalities such as vesicoureteral reflux (VUR)—the backward or reverse flow of urine into the...
32
One-Compartment Open Model: Urinary Excretion Data and Determination of k01:11

One-Compartment Open Model: Urinary Excretion Data and Determination of k

219
The one-compartment open model leverages urinary excretion data to estimate renal clearance, which gauges the kidney's capacity to expel a drug. This method offers several benefits, including directly measuring drug elimination and assessing the kidney's contribution to overall drug clearance. However, this approach has limitations. It assumes sole renal excretion of the drug, which is not true for all drugs. Accurate urinary excretion and plasma drug concentration measurement can also...
219
Determination of Renal Drug Clearance: Graphical and Midpoint Methods01:07

Determination of Renal Drug Clearance: Graphical and Midpoint Methods

156
Renal clearance, a crucial parameter in pharmacokinetics, can be determined using two different methods: the graphical method and the midpoint method. These methods provide insights into the rate of drug excretion by the kidneys and aid in assessing renal function.
The graphical method involves plotting the rate of drug excretion in urine against the plasma drug concentration. By analyzing the graph, the clearance can be calculated and obtained. Drugs rapidly excreted by the kidneys exhibit a...
156
Pipe Flowrate Measurement01:28

Pipe Flowrate Measurement

740
In pipe flow measurement, orifice, nozzle, and Venturi meters are commonly used to determine fluid flowrates by constricting the flow area, which increases fluid velocity and reduces pressure. This pressure difference, governed by Bernoulli's principle and adjusted for real-world conditions, is essential for calculating flowrate. Each meter type is suited to specific applications based on accuracy, efficiency, and compatibility with various flow conditions.
The orifice meter is a simple,...
740
Anatomy of the Genitourinary System II: Bladder and Urethra01:19

Anatomy of the Genitourinary System II: Bladder and Urethra

126
The lower urinary system consists of the urinary bladder and urethra, which are essential in storing and expelling urine from the body. Together with the internal and external sphincters, these structures work together to regulate urination effectively.Anatomy of the BladderThe urinary bladder is a muscular, stretchable organ behind the pubic bone and in front of the rectum. In females, the bladder is positioned anterior to the vagina and inferior to the uterus, while in males, it is located...
126

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Longitudinal Evolution of Uroflowmetry Patterns From Childhood to Puberty After Hypospadias Repair: A 12-Year Cohort Study.

Urology·2026
Same author

Androgen receptor localization in human oral mucosa: Implications for hypospadias surgery.

Journal of pediatric surgery·2025
Same author

Can unsupervised machine learning gain new insights into urodynamic pressure flow pattern analysis?

BJU international·2025
Same author

Videoflow: Uroflowmetry in Children Exploiting Standard Care Video Urodynamic Imaging.

Neurourology and urodynamics·2025
Same author

Increased recreational ketamine use and subsequent outbreak of urological complications in The Netherlands.

Clinical toxicology (Philadelphia, Pa.)·2025
Same author

Clinical Consultation Guide: When To Perform Urodynamics in Female Stress Urinary Incontinence.

European urology focus·2025

相关实验视频

Updated: Jul 18, 2025

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing
05:25

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing

Published on: August 14, 2019

19.2K

量化男性膀外流阻塞:比较利用大数据样本的四种近似方法.

Wouter van Dort1, Peter F W M Rosier1, Bernard J Geurts2

  • 1Department of Urology, University Medical Center Utrecht, Utrecht, The Netherlands.

Neurourology and urodynamics
|August 24, 2023
PubMed
概括
此摘要是机器生成的。

三参数方法 (3PM) 最准确地估计了膀外流阻塞 (BOO) 的最小尿道开口压力 (pmuo). 线性被动尿道阻力关系 (linPURR) 是评估BOO的最生理准确的方法.

关键词:
膀外流阻塞 膀外流阻塞压力流量研究 压力流量研究尿道阻力 尿道阻力尿动力学 尿动力学

更多相关视频

Nerve-sparing Mid-urethral Obstruction NeMO in Female Small Rodents
07:42

Nerve-sparing Mid-urethral Obstruction NeMO in Female Small Rodents

Published on: April 25, 2017

9.7K
Evaluation of Biomaterials for Bladder Augmentation using Cystometric Analyses in Various Rodent Models
10:19

Evaluation of Biomaterials for Bladder Augmentation using Cystometric Analyses in Various Rodent Models

Published on: August 9, 2012

19.3K

相关实验视频

Last Updated: Jul 18, 2025

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing
05:25

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing

Published on: August 14, 2019

19.2K
Nerve-sparing Mid-urethral Obstruction NeMO in Female Small Rodents
07:42

Nerve-sparing Mid-urethral Obstruction NeMO in Female Small Rodents

Published on: April 25, 2017

9.7K
Evaluation of Biomaterials for Bladder Augmentation using Cystometric Analyses in Various Rodent Models
10:19

Evaluation of Biomaterials for Bladder Augmentation using Cystometric Analyses in Various Rodent Models

Published on: August 9, 2012

19.3K

科学领域:

  • 泌尿器科 泌尿器科 泌尿器科 泌尿器科
  • 尿动力学 尿动力学
  • 下尿道的症状 下尿道的症状

背景情况:

  • 压力流量研究 (PFS) 是评估尿道抵抗 (UR) 和膀外流阻塞 (BOO) 的黄金标准.
  • 最低尿道开口压力 (pmuo) 是患有良性前列腺增生症的男性中BOO的一个关键参数.
  • 由于终端滴滴,对pmuo的直接测量具有挑战性,需要使用替代估计方法.

研究的目的:

  • 从PFS数据中比较四种已确定的方法来近似pmuo.
  • 评估pmuo和最大尿液流速 (Qmax) 与相应的压力 (pdetQmax) 之间的关系.
  • 确定在临床实践中评分UR和评估BOO的最准确方法.

主要方法:

  • 分析了1717名具有下尿路症状的男性高质量的PFS.
  • 使用三个单参数方法和一个三参数方法 (3PM) 计算pmuo.
  • 估计的pmuo值与精确评估的pmuo值进行比较,精度定义为<10 cmH2O差异.

主要成果:

  • 3PM模型表现出卓越的准确性,75.9%的近似值在实际pmuo的10cmH2O以内.
  • 尿道阻力A (URA) 和线性化被动尿道阻力关系 (linPURR) 显示可比性可靠性.
  • 膀外流阻塞指数 (BOOI) 是最不准确的方法,在更高的UR等级中倾向于高估pmuo.

结论:

  • 在估计pmuo和量化BOO方面,3PM方法是最准确的,而BOOI是最不准确的.
  • 鉴于其一般的不可用性和在低质量的PFS中未知的性能,linPURR被认为是目前生理上最准确的方法.
  • 需要进一步的研究来确定估计方法之间观察到的差异的临床相关性.