Intrapartum Ultrasound Assessment of Fetal Spine Position

Figure 1

Synthetic flow diagram about fetal occiput and spine position at recruitment, during labour and at delivery (according to type of delivery). (i) OPP: occiput posterior position, (ii) OAP: occiput anterior position, (iii) OPT: occiput transverse position, (iv) posterior spine: foetal spinal column in posterior position, (v) ant./trasv. spine: foetal spinal column in anterior or transverse position (percentages are expressed each related to the proper cluster of population).