Table 2.
Performance of abdominal fetal ECG and ultrasound compared to fetal scalp electrode.
| All stages | All subjects | Obese subjects: BMI ≥ 30 | ||||
|---|---|---|---|---|---|---|
| Ultrasound | afECG | p | Ultrasound | afECG | p | |
| (n = 71) | (n = 51) | |||||
| PPA (%) | 62.4 ± 26.5 | 83.4 ± 15.4 | <0.0001 | 58.1 ± 25.8 | 84.4 ± 14.6 | <0.0001 |
| RMSE (bpm) | 14.3 ± 8.2 | 4.8 ± 2.0 | <0.0001 | 15.6 ± 8.1 | 4.8 ± 2.1 | <0.0001 |
|
| ||||||
| Stage 1 | (n = 48) | (n = 36) | ||||
| PPA (%) | 61.3 ± 29.6 | 86.3 ± 14.7 | <0.0001 | 55.6 ± 28.8 | 79.1 ± 13.3 | <0.0001 |
| RMSE (bpm) | 13.6 ± 7.9 | 5.0 ± 2.0 | <0.0001 | 15.5 ± 8.1 | 4.9 ± 2.0 | <0.0001 |
|
| ||||||
| Stage 2 | (n = 23) | (n = 15) | ||||
| PPA (%) | 64.5 ± 18.5 | 77.5 ± 15.1 | <0.003 | 64.0 ± 15.3 | 79.1 ± 13.3 | <0.007 |
| RMSE(bpm) | 15.8 ± 8.4 | 5.0 ± 2.0 | <0.0001 | 15.7 ± 7.9 | 4.9 ± 2.0 | <0.0002 |
Monitoring uterine activity during labor.