Fig. 2. Recording of EMG activity (top tracing) recorded from the abdominal surface, intrauterine pressure (IUP), and tocodynamometer pressure (TOCO), fetal heart rate (FHR) and root mean square of the EMG signals (RMS) in a patient in labor. Note that bursts of EMG activity correspond to changes in pressure recorded with IUP and TOCO and that the conversion of EMG signals to RMS resemble signals obtained with the IUP and TOCO. This shows that recording of EMG signals and conversion of these signals to RMS can be used to replace TOCO and IUP techniques for monitoring the contractions of a pregnant patient. Monitor from Reproductive Research Technologies, LLP, Houston, Texas.
