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Vesicourethral Electromyography: Facts or Artefacts
Author(s) -
ABDELRAHMAN M.,
COULOMBE A.,
ABDELHAKIM A.,
GALEANO C.,
ELHILALI M.
Publication year - 1982
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.1982.tb08950.x
Subject(s) - electromyography , urethra , urinary bladder , anatomy , medicine , contraction (grammar) , urination , muscle contraction , biomedical engineering , urology , urinary system , physical medicine and rehabilitation
Summary— A vesicourethral electromyographic study was carried out on 21 cats of both sexes with extracellular electrodes along with monitoring of contraction and relaxation of various parts of the bladder and urethra. No consistent electromyographic pattern of slow and fast waves was observed in the bladder and urethra either in an empty bladder or during filling and voiding phases. Most of the recorded waves were traced to a defined source of artefact. Twenty‐two experiments were done with glass microelectrodes recording intracellularly in bladder strips of various animals bathed in normal and modified Krebs solutions. No spike activity was recorded during periods of contractions, whether spontaneous or electrically stimulated. Both in vivo and in vitro experiments suggest that the mechanism of excitation‐contraction coupling of the bladder remains unidentified. The clinical application of bladder electromyography (EMG) has to be interpreted cautiously.