Electromyographic studies of human urinary bladder

Cosgrove, Malcolm D.; Jones, Winston G.; Joie, William J. La; Kaplan, Paul D.; Morrow, James W.

doi:10.1016/s0090-4295(74)80027-0

Cited by 12 publications

(6 citation statements)

References 9 publications

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“…The interpretation of recordings is controversial and reports in literature show considerable variation on signal amplitude, frequency and shape (Corey et al, 1951;Boyce, 1952;Franksson & Petersen, 1953;Brunsting, 1958;Fredericks et al, 1969;Stanton et al, 1973Stanton et al, , 1974Cosgrove et al, 1974Cosgrove et al, , 1977Jones et al, 1974;Doyle et al, 1975;La Joie et al, 1975;Craggs & Stephenson, 1976, 1982, 1985Kaplan et al, 1976;Kaplan et al, 1976;Abdel-Rahman et al, 1982;Takaiwa et al, 1983aTakaiwa et al, , 1983bTakaiwa et al, , 1992Takaiwa & Shiraiwa, 1984;Jünemann et al, 1994;Shafik, 1994).…”

Section: Input U(t)mentioning

confidence: 99%

Introduction to this Special Issue on Neurology

Kinder

1999

Archives of Physiology and Biochemistry

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Section: Input U(t)mentioning

confidence: 99%

Introduction to this Special Issue on Neurology

Kinder

1999

Archives of Physiology and Biochemistry

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“…Six years later, Brunsting et al [1958] declared this and similar reports to be movement artifacts caused by bladder motility and electrode movement. In the following years several authors observed high as well as low frequency components in the detrusor electromyogram during spontaneous or pharmacologically induced bladder contraction [Stanton et al, 1973;Cosgrove et al, 1974;Kaplan et al, 1978;Nanninga et al, 1978;Takaiwa et al, 1992;Kinder et al, 1997;Scheepe et al, 1998a,b]. Only one author recorded a detrusor-EMG with a neurostimulation technique under standardized conditions and observed a correlation of electrical activity with bladder pressure in the frequency band above 10 Hz [Craggs et al, 1976].…”

Section: Introductionmentioning

confidence: 99%

Recording the evoked canine detrusor electromyogram

et al. 1999

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With increasing interest in detrusor disorders and possible detrusor myopathies, a method for recording the detrusor electromyogram (detrusor‐EMG) would probably greatly assist the diagnosis of various bladder dysfunctions. Therefore, we investigated the electromyographic activity of the detrusor during sacral root stimulation and during spontaneous bladder contractions in six anesthetized dogs. In all experiments, a high correlation of detrusor‐EMG recordings with bladder contraction was observed. Analysis in the time domain and power spectrum analysis revealed the most clear correlation of detrusor‐EMG with intravesical pressure rise in a frequency band above 3 Hz. The spike duration was 100 to 250 ms with an amplitude of 100 to 500 μV. Low‐frequency activity below 1 Hz was mainly presumed to be artifacts due to fluid movement under the electrode. Our trials indicate that smooth muscle EMG recordings from the detrusor smooth musculature are possible. The exact physiological relevance of the signal in the sub‐Hertz domain (<1 Hz) is still uncertain. The presented animal model allows the pathophysiologic investigation of various pathologies of bladder dysfunction and detrusor myopathies. Neurourol. Urodynam. 18:687–695, 1999. © 1999 Wiley‐Liss, Inc.

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“…Unfortunately, detrusor EMG has been accompanied by many problems during the last 45 years, leading to contradictory reports in the literature (Corey et al, 1951;Boyce, 1952;Franksson & Petersen, 1953;Brunsting, 1958;Fredericks et al, 1969;Stanton et al, 1973Stanton et al, , 1974Cosgrove et al, 1974Cosgrove et al, , 1977Jones et al, 1974;Doyle et al, 1975;La Joie et al, 1975;Craggs & Stephenson, 1976, 1985Kaplan et al, 1976;Abdel-Rahman et al, 1982;Takaiwa et al, 1983aTakaiwa et al, , b, 1992Takaiwa & Shiraiwa, 1984;Jünemann et al, 1994;Shafik, 1994). To review common problems of detrusor EMG to date, five exemplary cases will be discussed (Corey et al, 1951;Boyce, 1952;Brunsting, 1958;Stanton et al, 1973Stanton et al, , 1974Doyle et al, 1975;Craggs & Stephenson, 1976, 1985Takaiwa et al, 1983aTakaiwa et al, ,b, 1992Takaiwa & Shiraiwa, 1984).…”

Section: Introductionmentioning

confidence: 99%