OBJECTIVE: The purpose of this study was to characterize the noninvasive magnetic field recordings of the uterine electrophysiological activity in patients reporting onset of uterine contractions. STUDY DESIGN: Transabdominal magnetomyographic (MMG) recordings were performed with the use of the SARA system's 151 primary magnetic sensors (CTF Systems Inc, Coquitlam, British Columbia, Canada). Eleven term and 4 preterm patients participated in the study. On all patients, cervical dilation and outcomes were recorded. RESULTS: Of 8 patients having a peak MMG activity exceeding 8 pT (pico Tesla), all but 1 delivered within 48 hours of our recordings. Of the 7 patients with peak activity below 8 pT, 5 failed to deliver within 48 hours of the recordings. This observation reflects an increase in the electrophysiologic activity of the myometrium as labor progresses. CONCLUSION: MMG evaluation provides a new noninvasive method for the prediction of labor. Further studies are in progress to determine the temporal relationship of MMG changes with the onset of labor.
OBJECTIVE: The purpose of this study was to characterize the noninvasive magnetic field recordings of the uterine electrophysiological activity in patients reporting onset of uterine contractions. STUDY DESIGN: Transabdominal magnetomyographic (MMG) recordings were performed with the use of the SARA system's 151 primary magnetic sensors (CTF Systems Inc, Coquitlam, British Columbia, Canada). Eleven term and 4 preterm patients participated in the study. On all patients, cervical dilation and outcomes were recorded. RESULTS: Of 8 patients having a peak MMG activity exceeding 8 pT (pico Tesla), all but 1 delivered within 48 hours of our recordings. Of the 7 patients with peak activity below 8 pT, 5 failed to deliver within 48 hours of the recordings. This observation reflects an increase in the electrophysiologic activity of the myometrium as labor progresses. CONCLUSION: MMG evaluation provides a new noninvasive method for the prediction of labor. Further studies are in progress to determine the temporal relationship of MMG changes with the onset of labor.
Authors: Rathinaswamy B Govindan; Srinivasan Vairavan; Adrian Furdea; Pam Murphy; Hubert Preissl; Hari Eswaran Journal: Annu Int Conf IEEE Eng Med Biol Soc Date: 2010
Authors: Mengxue Zhang; Vanessa Tidwell; Patricio S La Rosa; James D Wilson; Hari Eswaran; Arye Nehorai Journal: PLoS One Date: 2016-03-28 Impact factor: 3.240
Authors: Diana Escalona-Vargas; Rathinaswamy B Govindan; Adrian Furdea; Pam Murphy; Curtis L Lowery; Hari Eswaran Journal: PLoS One Date: 2015-10-27 Impact factor: 3.240