Cause | No | No. in 2D exam | No. in 4D exam | P value |
---|---|---|---|---|
Decreased amniotic fluid | 30 | 9 | 26 | < 0.001 |
Close proximity to placenta | 12 | 3 | 9 | 0.014 |
Close proximity to uterine wall | 9 | 4 | 6 | 0.635a |
Close proximity to limbs | 13 | 4 | 9 | 0.049 |
Close Proximity to umbilical cord | 2 | 1 | 2 | 1.000a |
Posterior deep fetal head orientation | 9 | 6 | 7 | 1.000a |
Deeply seated fetal head at the pelvis | 8 | 5 | 7 | 0.564a |
Fetal movement | 2 | 0 | 2 | 0.317a |