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Continuous Monitoring of Bladder Pressure in Dogs in a Completely Physiological State
Author(s) -
TAKAYAMA K.,
TAKEI M.,
SOEJIMA T.,
KUMAZAWA J.
Publication year - 1987
Publication title -
british journal of urology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.773
H-Index - 148
eISSN - 1464-410X
pISSN - 0007-1331
DOI - 10.1111/j.1464-410x.1987.tb05008.x
Subject(s) - urination , sitting , medicine , anesthesia , vomiting , urinary bladder , urology , pressure sensor , pressure measurement , anatomy , urinary system , physics , pathology , meteorology , thermodynamics
Summary— Bladder pressure changes in the completely physiological state of dogs were recorded on voiding, coughing, defaecating, vomiting, etc , by a pressure transducer embedded in the submucosal layer of the anterior bladder wall. The static pressures in the standing and lying positions were almost the same at about 10 cm H 2 O and in the sitting position the pressures were about 30 cm H 2 O. The voiding pressure was recorded 28 times and ranged from 44 to 257 cm H 2 0 (average 141). These data were higher than expected and we recommend further studies on the maximum voiding pressure. On voiding, various patterns of pressure curve were observed and in the monophasic pressure curve, which probably shows normal urination, there was a time difference between urine flow and voiding pressure curve. Our new method may be useful not only as a sensory device for neurogenic bladder patients but also as an experimental system to study the effect of drugs on autonomic nerves.