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Electropotential and Pressure Variations in the Normal Human Urinary Bladder

Electropotential and Pressure Variations in the Normal Human Urinary Bladder N AN EARLIER REPORT we have described a method for recording electropotential changes in the human urinary bladder, together with the bioelectric characteristics frequency of spontaneous vesical activity as recorded by this technique (2). The present study was undertaken for the purpose of securing synchronous records of both potential pressure variations within the viscus in order that the major typical potential shifts which we have tentatively designated as the ‘A’ ‘B’ deflections (fig. IA) might be better understood in terms of bladder function, an obvious advantage in the clinical use of the method. METHODS Synchronous records of potential pressure variations were secured by means of a special urethral sound2 containing passages not only for the electrodes as previously described but, in addition, an open channel for the transmission of intravesical pressure as well. The lumen of this channel was connected through relatively inelastic plastic tubing to a Statham strain gauge” having a linear sensitivity of o to 50 mm. Hg, so that pressure changes could be recorded through a control unit in conjunction with a Grass electroencephalograph, suitably filtered. The fluid content of the bladder was varied at will through a three-way stopcock incorporated in the system, it http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Physiology The American Physiological Society

Electropotential and Pressure Variations in the Normal Human Urinary Bladder

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Publisher
The American Physiological Society
Copyright
Copyright © 1952 the American Physiological Society
ISSN
8750-7587
eISSN
1522-1601
Publisher site
See Article on Publisher Site

Abstract

N AN EARLIER REPORT we have described a method for recording electropotential changes in the human urinary bladder, together with the bioelectric characteristics frequency of spontaneous vesical activity as recorded by this technique (2). The present study was undertaken for the purpose of securing synchronous records of both potential pressure variations within the viscus in order that the major typical potential shifts which we have tentatively designated as the ‘A’ ‘B’ deflections (fig. IA) might be better understood in terms of bladder function, an obvious advantage in the clinical use of the method. METHODS Synchronous records of potential pressure variations were secured by means of a special urethral sound2 containing passages not only for the electrodes as previously described but, in addition, an open channel for the transmission of intravesical pressure as well. The lumen of this channel was connected through relatively inelastic plastic tubing to a Statham strain gauge” having a linear sensitivity of o to 50 mm. Hg, so that pressure changes could be recorded through a control unit in conjunction with a Grass electroencephalograph, suitably filtered. The fluid content of the bladder was varied at will through a three-way stopcock incorporated in the system, it

Journal

Journal of Applied PhysiologyThe American Physiological Society

Published: Jul 1, 1952

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