Title: Uterine Electrical Activity During First Stage of Labor

Authors: Tecky Afifah Santy Amartha, Suryono Suryono, Melyana Nurul Widyawati, Syarief Thaufik Hidayat, Suryati Kumorowulan

 DOI:  https://dx.doi.org/10.18535/jmscr/v6i1.61

Abstract

Palpation tecnique still used today, studies have shown that this technique is uneffective for measuring uterine contractions during labor. Electromyogram (EMG) with surface electrodes is a non-invasive tool that can be used to monitor uterine activity in labor with more objective and accurate result. The aim of this study was to explain the uterus electrical activity during first stage of labor. This is a prospective observational of 10 singleton deliveries. Maternal contractions monitored using 3-channel surface electrodes of the EMG. Recording was done from begining until complete servix dillatation every 30 minutes for 10 minutes. Recordings are then calculated the average frequency, duration, interval, and the action potentials. Ten random data sequence was piked by data normalization and presented in a trend.The results showed the frequency, duration and action potential experiencing a rising trend approaching second stage of labor, with average respectively (3.65 ± 0.89) time/10 minutes, (67.40 ± 27.03) second and (62.82 ± 29.12) mV. But in the frequency and action potential decreased at the end of  first stage of labor. The duration of the contraction was significantly decreased approached second stage of labor with average (3.79 ± 1.18) menutes. Changes in uterus activity was a natural mechanism during labor in the mother's body to adjust physiological conditions of the mother and fetus in the womb to be through normal birth process.

Keywords: Uterine Contraction, Uterine electricity, First stage of labor, Electromyography

References

  1. Unicef Indonesia. Ringkasan Kajian: Kesehatan Ibu dan Anak. 2012.
  2. Saifudin, A.B. Ilmu Kebidanan Sarwono Prawiroharjo. PT Bina Pustaka Sarwono Prawiroharjo: Jakarta. 2009: 288-294.
  3. Arrabal, P.P. dan Nagey, D.A. Is manual palpation ofuterine contractions accurate? Am J Obstet Gynecol, 1996;174(1): 217-9.
  4. Cohen, W. Uterine Electromyography. Pregnant Women Can Soon Benefit from Research at Jamaica Hospital. 2003.
  5. Gamet, D. dan Fokapu, O. Electromyo-graphy. Encyclopedia of Biomedical Engineering. Informa Healthcare USA. 2008.
  6. Garfield, R.E., Maner, W.L. Physiology and Electrical Activity of Uterine Contractions. Semin Cell Dev Biol. 2007:18(3): 289-295.
  7. Lammers, W.J.E.P. The Electrical Activities of the Uterus During Pregnancy. Reproductive Sciences 20(2). 2013;182-189.
  8. Verdenik, I., Pajntar, M., Leskosek, B. Uterine electrical activity as predictor of preterm birth in woman with preterm contractions. European Journal of Obstetric and Gynecology and Reproductive Biology 95 (2001) 149-153.
  9. Vasak et al. Uterine Electromyography for identification of first-stage labor arrest in term nulliparous women with spontaneous onset of labor. Am J Obstet Gynecol, 2013; 209-232.e1-8.
  10. Cunningham, F.G., Leveno, K.J, Bloom, S.L., Hauth, J.C., Rouse, D.J., Spong, C.Y. Obstetri Williams. Ed 23. Vol 1. EGC: Jakarta. 2013.
  11. Vrhovec, J and Lebar, A.M. An Uterine Electromyographic Activity as a Measure of Labor Progression, Applications of EMG in Clinical and Sport Medicine, Dr. Catriona Steele (Ed.), InTech, 2012.
  12. Moslem, B., Khalil, M., Diab,O., Marque, C. Detrenden fluctuation analysis uterine electromyography. 978-1-4244-7000-6/11. IEEE. 2011.
  13. Dixon, L., Skinner, J., Foureur, M. The emotional and hormonal pathways of labour and birth: integrating mind, body and behavior. New Zeland Collage of Midwives Journal 48. 2013.15-23.
  14. Zagami, S.E., Golmakani, N., Saadatjoo, S.A.R., Ghomian, N., Baghbani, B. The shape of uterine contractions and labor progress in spontaneous active labor. Iran J Med Sci. 2015; Vol 40, No 2.
  15. Sofian, Amru. Rustam Mochtar Sinopsis Obstetri. Jilid 1. EGC: Jakarta. 2012: 65; 71.
  16. Failey, D.H. Lecture Notes. Obstetrics and Gynaecology. 2nd Ed. 2004: 162.
  17. Electronic Fetal Heart Monitoring. Brookside Associates. 2014. Available at http://www.brooksidepress.org/Products/Military_OBGYN/Textbook/LaborandDelivery/electronic_fetal_heart_monitoring.htm
  18. Hiersch, L., Salzer, L., Aviram, A., Haroush, A.B., Ashwal, E., Yogev Y. Factors affecting uterine electrical activity during the active phase of labor prior to rupture of membranes. J Matern Fetal Neonatal Med. 2014.
  19. Olivera, B.D.R., Andrade, A.D., Lemos, A., Brito, V.C., Pedrosa, M.L., Silva, T.N.S. Abdominal muscle electrical activity during labor expulsive stage: a cross-sectional study. Rev Bras Fisioter. 2011;15(6):445-51.

Corresponding Author

Tecky Afifah Santy Amartha

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