Figure 2.

Example of recorded and calculated data. Shown is an example of all data corresponding to one patient. From top, temperature, heart rate, standard deviation of normal-to-normal intervals (SDNN), and root mean square of successive differences (RMSSD) were tracked during maternal labor, with t = 0 (vertical black solid line). Fever onset occurs approximately 128 minutes before delivery (vertical black dotted line). The blue traces for temperature and heart rate represent continuous data recorded by the wireless vital sign monitoring device, while the red trace shows manually taken temperatures. The yellow and purple traces for SDNN and RMSSD, respectively, are calculated from RR interval data recorded by the wireless vital sign monitoring device.