Table 2.
Values of clinically important parameters of quantitative description of FHR-E and FHR-U signals, from FECG and US, obtained in a computer-aided fetal monitoring system, together with the symmetric mean percentage difference SMPD estimating the inconsistencies between both the methods.
Parameters | FHR_E | FHR_U | SMPD (%) | ||
---|---|---|---|---|---|
Mean | SD | Mean | SD | ||
M_FHR (bpm) | 143.19 | 9.35 | 143.32 | 9.49 | −0.1 |
M_BL (bpm) | 141.70 | 9.55 | 141.79 | 9.60 | −0.1 |
ACC (number) | 6.62 | 5.31 | 6.12 | 5.29 | 7.8 |
DEC (number) | 0.40 | 0.87 | 0.23 | 0.56 | 54.0 |
LTV (ms) | 39.54 | 11.90 | 37.91 | 11.40 | 4.2 |
STV* (ms) | 6.35 | 2.41 | 5.68 | 2.02 | 11.1 |
HE_D (min) | 12.72 | 12.15 | 10.60 | 11.49 | 18.2 |
LE_D (min) | 7.85 | 8.01 | 8.72 | 7.91 | −10.5 |
HE_V (ms) | 53.59 | 9.67 | 54.99 | 7.81 | −2.6 |
LE_V (ms) | 18.67 | 3.22 | 18.78 | 3.39 | −0.6 |
OSC (ms) | 13.40 | 3.80 | 12.91 | 3.70 | 3.7 |
OSC_I (%) | 10.51 | 14.39 | 11.05 | 15.30 | −5.0 |
OSC_II (%) | 27.77 | 15.59 | 29.29 | 15.39 | −5.3 |
OSC_III (%) | 45.31 | 18.19 | 45.48 | 19.11 | −0.4 |
OSC_IV (%) | 8.96 | 9.25 | 7.81 | 9.06 | 13.7 |
p < 0.05 (paired t-test).