Use of short-term bio-impedance for gastric motility assessment

Huerta-Franco, R.; Vargas-Luna, M.; Hernandez, E.; Capaccione, K.; Cordova, T.

doi:10.1016/j.medengphy.2009.02.008

« Previous Next »Medical Engineering & Physics
Volume 31, Issue 7 , Pages 770-774, September 2009

Use of short-term bio-impedance for gastric motility assessment

R. Huerta-Franco
- Department of Labor Research and Applied Science, DCS, Campus-León, The University of Guanajuato, Av Eugenio Garza Sada 572, Lomas del Campestre, 37150 Leon Gto, Mexico
- Corresponding author at: Instituto de Investigaciones Sobre el Trabajo, Universidad de Guanajuato, Av Eugenio Garza Sada 572, Lomas del Campestre, 37150 León Gto, Mexico. Tel.: +52 477 718 4721; fax: +52 477 773 7037.
M. Vargas-Luna
- Department of Engineering Physics, DCI, Campus-León, The University of Guanajuato, Loma del Bosque 103, Lomas del Campestre, 37150 Leon Gto, Mexico
E. Hernandez
- Department of Engineering Physics, DCI, Campus-León, The University of Guanajuato, Loma del Bosque 103, Lomas del Campestre, 37150 Leon Gto, Mexico
K. Capaccione
- College of Arts and Science, New York University, 100 Wasington Square East, New York, NY 10003, USA
T. Cordova
- Department of Engineering Physics, DCI, Campus-León, The University of Guanajuato, Loma del Bosque 103, Lomas del Campestre, 37150 Leon Gto, Mexico

Received 24 June 2008; received in revised form 13 February 2009; accepted 16 February 2009. published online 23 March 2009.

Abstract

Gastric motility (GM) has been assessed using bio-impedance (BI) techniques in the time domain using short term recordings and analyzing mainly the median of the area under the fast Fourier transform (FFT) spectra. The BI technique has been applied to the gastric system mainly for gastric emptying (GE) studies. However, gastric motility evaluation using BI has not been fully implemented. In this study, we propose the use of the BI technique for the evaluation of gastric motility considering global features of the fast FFT spectra. The study was performed in eleven healthy subjects who were evaluated in fasting and postprandial conditions. The results indicate that the use of the median of the area under the FFT spectra is equivalent to the use of the main peak of the spectra to determine the changes in gastric motility from the fasting to the postprandial state. This demonstrates that BI is a valid technique for gastric motility evaluation in short time recordings.

PACS: 87.00.00, 87.61.Tg, 87.19.xu, 87.19.rf

Keywords: Gastric, Motility, Emptying, Bio-impedance, Time domain