A spectral analysis of the myoelectric activity of the left colon in patients with schistosomiasis mansoni
Braz. j. med. biol. res
; 38(5): 737-746, May 2005. tab
Article
em En
| LILACS
| ID: lil-400953
Biblioteca responsável:
BR1.1
RESUMO
The objective of the present study was to perform a spectral analysis of the electrical activity of the left colon of patients with hepatosplenic schistosomiasis. Thirty patients were studied, divided into 2 groups group A was composed of 14 patients (9 males and 5 females) with hepatosplenic schistosomiasis and group B was composed of 16 female patients without schistosomiasis mansoni. Three pairs of electrodes were implanted in the left colon at the moment of the surgical treatment. The signals of the electric activity of the colon were captured after postoperative recovery from the ileus and fed into a computer by means of a DATAQ data collection system which identified and captured frequencies between 0.02 and 10 Hz. Data were recorded, stored and analyzed using the WINDAQ 200 software. For electrical analysis, the average voltage of the electrical wave in the three electrodes of all patients, expressed as millivolts (mV), was considered, together with the maximum and minimum values, the root mean square (RMS), the skewness, and the results of the fast Fourier transforms. The average RMS of the schistosomiasis mansoni patients was 284.007 mV. During a long period of contraction, the RMS increased in a statistically significant manner from 127.455 mV during a resting period to 748.959 mV in patients with schistosomiasis mansoni. We conclude that there were no statistically significant differences in RMS values between patients with schistosomiasis mansoni and patients without the disease during the rest period or during a long period of contraction.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Esplenopatias
/
Esquistossomose mansoni
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Colo
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Hepatopatias Parasitárias
Tipo de estudo:
Observational_studies
Limite:
Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
Braz. j. med. biol. res
Assunto da revista:
BIOLOGIA
/
MEDICINA
Ano de publicação:
2005
Tipo de documento:
Article
/
Project document
País de afiliação:
Brasil
País de publicação:
Brasil