Lawson Yolanda, Dombrowski Mitchell P, Carter Sharon, Hagglund Karen H
St John Hospital and Medical Center, Wayne State University, Detroit, Michigan, USA.
Am J Obstet Gynecol. 2003 Nov;189(5):1396-7. doi: 10.1067/s0002-9378(03)00586-6.
A prospective study was performed on 63 women at risk for preterm delivery who recorded maternally perceived contractions for 1 hour before and after placement of an external tocodynamometer. Fifteen women had an increase, 11 had a decrease, and 37 had no change (P not significant) in the number of perceived contractions after placement of the tocodynamometer.
