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Progression of Delivery with OA Presentation vs. OP Presentation
Progression of Delivery with OA Presentation vs. OP Presentation

This medical exhibit features six (6) sagittal (side cut-away) view of the female pelivis and birth canal revealing the fetal head in each image. The first three images illustrate the progression of a normal OA delivery with the fetal head entering the birth canal, progressing down the birth canal and exiting the birth canal. Forceps will be shown being applied in the second image once the fetal head is in the birth canal. In these images the fetus will be presenting in a chin-to-chest orientation so that the crown of the head leads the way as the baby progresses through the birth canal. The second set of three images illustrates the same progression with the fetus in the OP presentation. Again, forceps are shown in place in the second image once the fetal head is within the birth canal. In these images, the fetal head is not be flexed forward and the head lies more perpendicular to the birth canal without the 'aerodynamic' look of the first set of images.

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Last Updated: Mar 5th, 2020

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