Pudendal somatosensory evoked potentials in normal women

Pudendal somatosensory evoked potentials in normal women

Author Cavalcanti, Geraldo A. Autor UNIFESP Google Scholar
Bruschini, Homero Autor UNIFESP Google Scholar
Manzano, Gilberto Mastrocola Autor UNIFESP Google Scholar
Nunes, Karlo Faria Autor UNIFESP Google Scholar
Giuliano, Lydia M. Autor UNIFESP Google Scholar
Nobrega, Joao Antonio Autor UNIFESP Google Scholar
Srougi, Miguel Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Universidade de São Paulo (USP)
Abstract OBJECTIVE: Somatosensory evoked potential (SSEP) is an electrophysiological test used to evaluate sensory innervations in peripheral and central neuropathies. Pudendal SSEP has been studied in dysfunctions related to the lower urinary tract and pelvic floor. Although some authors have already described technical details pertaining to the method, the standardization and the influence of physiological variables in normative values have not yet been established, especially for women. The aim of the study was to describe normal values of the pudendal SSEP and to compare technical details with those described by other authors. MATERIALS AND METHODS: The clitoral sensory threshold and pudendal SSEP latency was accomplished in 38 normal volunteers. The results obtained from stimulation performed on each side of the clitoris were compared to ages, body mass index (BMI) and number of pregnancies. RESULTS: The values of clitoral sensory threshold and P1 latency with clitoral left stimulation were respectively, 3.64 ± 1.01 mA and 37.68 ± 2.60 ms. Results obtained with clitoral right stimulation were 3.84 ± 1.53 mA and 37.42 ± 3.12 ms, respectively. There were no correlations between clitoral sensory threshold and P1 latency with age, BMI or height of the volunteers. A significant difference was found in P1 latency between nulliparous women and volunteers who had been previously submitted to cesarean section. CONCLUSIONS: The SSEP latency represents an accessible and reproducible method to investigate the afferent pathways from the genitourinary tract. These results could be used as normative values in studies involving genitourinary neuropathies in order to better clarify voiding and sexual dysfunctions in females.
Keywords neurophysiology
pelvic floor
evoked potentials
electrodiagnosis
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Date 2007-12-01
Published in International braz j urol. Sociedade Brasileira de Urologia, v. 33, n. 6, p. 815-821, 2007.
ISSN 1677-5538 (Sherpa/Romeo)
Publisher Sociedade Brasileira de Urologia
Extent 815-821
Origin http://dx.doi.org/10.1590/S1677-55382007000600010
Access rights Open access Open Access
Type Article
SciELO ID S1677-55382007000600010 (statistics in SciELO)
URI http://repositorio.unifesp.br/handle/11600/4014

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