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Obstetric and Gynecological Nursing - The Carter Center

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Figure 4. Fetal skull (V.RUTH BENNETT. LINDA K. BROWN, 1993)<br />

Diameters of the Fetal Skull<br />

<strong>The</strong> measurement of the skulls are transverse,<br />

anteropositerior or longitudinal.<br />

- Transverse diametes<br />

. Biparietal diameter 9.5 cm between the parietal<br />

eminence<br />

. Bitemporal diameter 8.2cm between the furtherse<br />

points of the coronal suture at the temples.<br />

- Anteroposterior or longitudinal diameters<br />

. Suboccipitobregmatic 9.5 cm from below the occipital<br />

protuberance to the center of the anterior fontanelle or<br />

bregma<br />

16

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