Functional mapping of the pelvic floor and sphincter muscles from high-density surface EMG recordings.
Int Urogynecol J
; 27(11): 1689-1696, 2016 Nov.
Article
em En
| MEDLINE
| ID: mdl-27193113
ABSTRACT
INTRODUCTION AND HYPOTHESIS:
Knowledge of the innervation of pelvic floor and sphincter muscles is of great importance to understanding the pathophysiology of female pelvic floor dysfunctions. This report presents our high-density intravaginal and intrarectal electromyography (EMG) probes and a comprehensive innervation zone (IZ) imaging technique based on high-density EMG readings to characterize the IZ distribution.METHODS:
Both intravaginal and intrarectal probes are covered with a high-density surface electromyography electrode grid (8 × 8). Surface EMG signals were acquired in ten healthy women performing maximum voluntary contractions of their pelvic floor. EMG decomposition was performed to separate motor-unit action potentials (MUAPs) and then localize their IZs.RESULTS:
High-density surface EMG signals were successfully acquired over the vaginal and rectal surfaces. The propagation patterns of muscle activity were clearly visualized for multiple muscle groups of the pelvic floor and anal sphincter. During each contraction, up to 218 and 456 repetitions of motor units were detected by the vaginal and rectal probes, respectively. MUAPs were separated with their IZs identified at various orientations and depths.CONCLUSIONS:
The proposed probes are capable of providing a comprehensive mapping of IZs of the pelvic floor and sphincter muscles. They can be employed as diagnostic and preventative tools in clinical practices.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Canal Anal
/
Diafragma da Pelve
/
Eletromiografia
/
Desenho de Equipamento
Limite:
Adult
/
Female
/
Humans
Idioma:
En
Revista:
Int Urogynecol J
Assunto da revista:
GINECOLOGIA
/
UROLOGIA
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Estados Unidos