Rhythms and Fractal in Urodynamics

博士 === 國立清華大學 === 電機工程學系 === 94 === In micturition, the bladder is supposed to empty by a contraction of the detrusor and relaxation of the external sphincter during micturition. By contrast, suprasacral spinal cord injury (SCI) patients usually will have both of them contract simultaneously and res...

Full description

Bibliographic Details
Main Authors: Shih Jen Hu, 胡仕人
Other Authors: Shyang Chang
Format: Others
Language:zh-TW
Published: 2006
Online Access:http://ndltd.ncl.edu.tw/handle/19426811180557557739
id ndltd-TW-094NTHU5442018
record_format oai_dc
spelling ndltd-TW-094NTHU54420182016-06-01T04:14:41Z http://ndltd.ncl.edu.tw/handle/19426811180557557739 Rhythms and Fractal in Urodynamics 尿流動力學中的節律與分形 Shih Jen Hu 胡仕人 博士 國立清華大學 電機工程學系 94 In micturition, the bladder is supposed to empty by a contraction of the detrusor and relaxation of the external sphincter during micturition. By contrast, suprasacral spinal cord injury (SCI) patients usually will have both of them contract simultaneously and result in the so-called detrusor-sphincter dyssynergia. In this study, the cystometrograms of the detrusor and the electromyograms of external urethral sphincter of intact and SCI female Wistar rats are used to investigate the detrusor-sphincter synergia and dyssynergia during micturition. Here, we demonstrate that a temporal “coherent” fractal structure and synchronization of rhythms are two essential features for concerted systemic functions in urodynamics of female Wistar rats. The rhythms of detrusor of the bladder and external urethral sphincter are synchronized around 7Hz and their fractal dimensions as functions of time are temporally “coherent” under 1.5 during voiding in order to facilitate the concerted process. On the other hand, in the spinal cord injured rats, either the temporal coherent structure of fractal or the underlying synchronization of rhythms is impaired, weakened, or absent. Results indicate that, for intact rats, the sphincter muscle is not only active but also recruited in a synchronous fashion with the detrusor. These results have potential implications in the diagnosis of the so-called “dynamical” diseases. Shyang Chang 張翔 2006 學位論文 ; thesis 90 zh-TW
collection NDLTD
language zh-TW
format Others
sources NDLTD
description 博士 === 國立清華大學 === 電機工程學系 === 94 === In micturition, the bladder is supposed to empty by a contraction of the detrusor and relaxation of the external sphincter during micturition. By contrast, suprasacral spinal cord injury (SCI) patients usually will have both of them contract simultaneously and result in the so-called detrusor-sphincter dyssynergia. In this study, the cystometrograms of the detrusor and the electromyograms of external urethral sphincter of intact and SCI female Wistar rats are used to investigate the detrusor-sphincter synergia and dyssynergia during micturition. Here, we demonstrate that a temporal “coherent” fractal structure and synchronization of rhythms are two essential features for concerted systemic functions in urodynamics of female Wistar rats. The rhythms of detrusor of the bladder and external urethral sphincter are synchronized around 7Hz and their fractal dimensions as functions of time are temporally “coherent” under 1.5 during voiding in order to facilitate the concerted process. On the other hand, in the spinal cord injured rats, either the temporal coherent structure of fractal or the underlying synchronization of rhythms is impaired, weakened, or absent. Results indicate that, for intact rats, the sphincter muscle is not only active but also recruited in a synchronous fashion with the detrusor. These results have potential implications in the diagnosis of the so-called “dynamical” diseases.
author2 Shyang Chang
author_facet Shyang Chang
Shih Jen Hu
胡仕人
author Shih Jen Hu
胡仕人
spellingShingle Shih Jen Hu
胡仕人
Rhythms and Fractal in Urodynamics
author_sort Shih Jen Hu
title Rhythms and Fractal in Urodynamics
title_short Rhythms and Fractal in Urodynamics
title_full Rhythms and Fractal in Urodynamics
title_fullStr Rhythms and Fractal in Urodynamics
title_full_unstemmed Rhythms and Fractal in Urodynamics
title_sort rhythms and fractal in urodynamics
publishDate 2006
url http://ndltd.ncl.edu.tw/handle/19426811180557557739
work_keys_str_mv AT shihjenhu rhythmsandfractalinurodynamics
AT húshìrén rhythmsandfractalinurodynamics
AT shihjenhu niàoliúdònglìxuézhōngdejiélǜyǔfēnxíng
AT húshìrén niàoliúdònglìxuézhōngdejiélǜyǔfēnxíng
_version_ 1718287370542907392