The anatomy of urination: What every physician should know

Weledji, Elroy Patrick; Eyongeta, Divine; Ngounou, Eleanor

doi:10.1002/ca.23296

Cited by 17 publications

(12 citation statements)

References 41 publications

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“…Порушення уродинаміки частіше трапляються в основних уродинамічних вузлах: чашечко-мисковому, мисково-сечовідному, сечовідно-міхуровому та міхурово-сечівниковому сегментах [1,2], що є сприятливим чинником порушення відтоку сечі, розвитку пієлонефриту та ниркової недостатності. Кожен сегмент відіграє важливу роль у регуляції швидкості, односпрямованості, порційності та циклічності току сечі з верхніх сечових шляхів у нижні та в запобіганні рефлюксу [3,4].…”

Section: вступunclassified

Topographic and anatomical characteristics of the bladder neck in early fetuses

Проняєв¹,

Kashperuk-Karpiuk²,

Proniaiev³

et al. 2021

Buk. Med. Herald

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Aim. To determine macro-and microscopic anatomical characteristics and the dynamics in topographic and anatomical interactions of the bladder neck with adjacent organs and structures at the beginning of the fetal period. Material and methods. The study was carried out on 70 fetal specimens. The age of subjects included in the study was determined according to the tables of B.M. Patten, B.P. Khvatova, Yu.N. Shapovalov based on measurements of the parietal-calcaneal length (PCL), taking into account the Instructions for determining the perinatal period, live birth, and stillbirth criteria, approved by Order of the Ministry of Health of Ukraine No. 179 dated March 29, 2006. To achieve this goal, the following methods of anatomical research were used: anthropometry - to determine the age of the studied subjects; injection of arterial vessels with subsequent dissection under the control of a microscope – to study the peculiarities of the blood supply to the vesicoureteral segment; radiography - to determine the skeletotopy of the vesicoureteral segment; macro-microscopy – to explore the anatomical relationships of the components of the vesicoureteral segment, their structure, shape, position; histological – to study the structure of the wall of the vesicoureteral segment; morphometry – to determine the morphometric parameters of the vesicoureteral segment; 3-D reconstruction method – to study the spatial structure of the vesicoureteral segment; statistical – to analyze and establish the reliability of differences in organometric parameters.Results. Skeletopically, the projection of the vesicoureteral junction of early fetuses is located at the level of the upper third of the pubic symphysis. At the beginning of the perinatal period in female fetuses, the bladder neck (6.9 ± 2.6 mm) is longer than in male fetuses (6.4 ± 2.4 mm). Based on the analysis and generalization of the research results, it is substantiated that at the beginning of the fetal period, the internal urethral sphincter can be formed: a) by two loops of the outer longitudinal layer; b) the ring of the circular layer and the front bundles of the outer longitudinal layer; c) anterior bundles of the outer longitudinal layer and transverse bundles of the inner longitudinal layer within the trigone of urinary bladder; d) a ring of the circular layer, thickened in the anterolateral sections.Conclusions. Considering the topographic and anatomical characteristics of the angio- and myoarchitectonics of the vesicoureteral segment, we believe that its role as a physiological sphincter of the lower urinary tract is provided by the interaction of the vascular and muscle components. The vascular component of the sphincter apparatus of the vesicoureteral segment is provided by veins located in three layers: 1) cavernous-like veins of the submucosa; 2) veins of the muscular membrane; 3) veins of tunica adventitia. The second anatomical component of the sphincter function of the vesicoureteral segment is the muscular one, represented by the internal urethral sphincter.

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Section: вступunclassified

Topographic and anatomical characteristics of the bladder neck in early fetuses

Проняєв¹,

Kashperuk-Karpiuk²,

Proniaiev³

et al. 2021

Buk. Med. Herald

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“…of afferent and efferent nerve activity, central processing, DSM function and urethral biomechanics (de Groat & Wickens, 2013;de Groat et al 2015;Weledji et al 2019). As discussed above, it is clear that TRPV4 is anatomically positioned to affect the various components of bladder control (Fig.…”

Section: Distribution Of Trpv4 In the Urinary Bladdermentioning

confidence: 99%

“…2015; Weledji et al . 2019). As discussed above, it is clear that TRPV4 is anatomically positioned to affect the various components of bladder control (Fig.…”

Section: Introductionmentioning

confidence: 99%

Emerging roles of the TRPV4 channel in bladder physiology and dysfunction

et al. 2020

The Journal of Physiology

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The transient receptor potential vanilloid type 4, TRPV4, is a polymodal cation channel which can be activated by diverse stimuli including mechanical, thermal and chemical cues. In the urinary bladder, TRPV4 is not only abundantly expressed in the urothelium but may also be localized in subepithelium, detrusor smooth muscles and afferent neurons. Emerging evidence indicates that the TRPV4 channel plays a sensory role in the uroepithelium, where it may regulate Yanyuan Wu graduated from Wenzhou Medical University with Bachelor's degree in Clinical Medicine. She is currently a PhD student in Shanghai Jiaotong University School of Medicine, jointly supervised by Professor Jun Qi (a Clinical Urologist) and Professor Weifang Rong (a basic scientist with a research interest in bladder physiology and dysfunction). Her current research focuses on ion channels and receptors in hypersensitive bladder.

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“…Women are susceptible to involuntary leakage of urine due to their urinary system anatomy [3]. Moreover, some studies reported the relationship between demographic and midwifery factors such as age, parity, and delivery method with urinary incontinence [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Explaining factors affecting help-seeking behaviors in women with urinary incontinence: a qualitative study

Fakari

Hajian

Darvish

et al. 2021

BMC Health Serv Res

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Background Urinary incontinence is widely accepted to be among the most important issues in the global health system. However, only a limited number of women are referred for treatment because different factors complicate help-seeking behaviors. The aim of this study was to explain the factors affecting help-seeking behaviors in women suffering from urinary incontinence. Methods This study was a qualitative study using the conventional content analysis approach. The study was conducted from December 2018 and August 2019 in Tehran, Iran. The participants were 34 women with urinary incontinence selected using a purposive sampling method. The content analysis approach was based on the Graneheim and Lundman method, and qualitative data management software was used for analysis. Results Data analysis illustrates two themes; “ facilitator “ and “ inhibitor “; the categories “not perceiving disease”, “shame”, “ negative support of important others”, and “non-optimal health care system” were among the inhibitors and the categories “ reduced quality of life “ and “ positive support of important others” were found to be facilitators of help-seeking behaviors. Conclusions The findings of the present study highlight the need for understanding the underlying facilitators and inhibitors of help-seeking behaviors in women with urinary incontinence. We suggest that healthcare providers consider an open dialogue with patients and consider their subjective beliefs and life context during routine visits to facilitate early diagnosis of the disease and ultimately lead to an improvement in the woman’s quality of life.

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The anatomy of urination: What every physician should know

Cited by 17 publications

References 41 publications

Topographic and anatomical characteristics of the bladder neck in early fetuses

Topographic and anatomical characteristics of the bladder neck in early fetuses

Emerging roles of the TRPV4 channel in bladder physiology and dysfunction

Explaining factors affecting help-seeking behaviors in women with urinary incontinence: a qualitative study

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