presentation /pre·sen·ta·tion/ (pre″zen-ta´shun) that part of the fetus lying over the pelvic inlet; the presenting body part of the fetus. Cf. position and lie. 
Breech presentation
breech presentation
presentation [prez″en-ta´shun]
)
Presentation of fetus.
antigen presentation the hypothesis that macrophages not only ingest and process antigen, refining and complexing it with SRNA, but also present it in concentrated form at their surfaces to lymphocytes, thus inducing an immune response by the lymphocytes.
breech presentation presentation of the fetal buttocks or feet in labor; the feet may be alongside the buttocks (complete breech p.); the legs may be extended against the trunk and the feet lying against the face (frank breech p.); or one or both feet or knees may be prolapsed into the maternal vagina (incomplete breech p.) .
brow presentation presentation of the fetal brow in labor.
cephalic presentation presentation of any part of the fetal head in labor, whether the vertex, face, or brow.
compound presentation prolapse of a limb of the fetus alongside the head in a cephalic presentation or of one or both arms in a breech presentation.
footling presentation presentation of the fetus with one (single footling) or both (double footling) feet prolapsed into the maternal vagina.
funis presentation presentation of the umbilical cord in labor.
placental presentation placenta previa.
shoulder presentation presentation of the fetal shoulder in labor; see oblique lie and transverse lie.
transverse presentation see under lie.
vertex presentation that in which the vertex of the fetal head is the presenting part.
| breech presentation n. Presentation of the fetus during birth with the buttocks or less commonly the knees or feet first. |
Breech presentation
The condition in which the baby enters the birth canal with its buttocks or feet first.
Mentioned in: Cesarean Section, Electronic Fetal Monitoring
breech presentation
Etymology: ME, brech + L, praesentare, to show
intrauterine position of the fetus in which the buttocks or feet present. It occurs in approximately 3% of labors. Kinds of breech presentation are complete breech, footling breech, and frank breech. Compare vertex presentation. See also breech birth.
presentation [prez″en-ta´shun]
that part of the fetus lying over the pelvic inlet; the presenting body part of the fetus. See also position and lie.
breech presentation presentation of the fetal buttocks, knees, or feet in labor; the feet may be alongside the buttocks (complete breech presentation); the legs may be extended against the trunk and the feet lying against the face (frank breech presentation); or one or both feet or knees may be prolapsed into the maternal vagina (incomplete breech presentation).
Breech presentation. From McKinney et al., 2000.
antigen presentation presentation of ingested antigens on the surface of macrophages near histocompatibility antigens; see also antigen presentation.
cephalic presentation presentation of any part of the fetal head in labor, whether the vertex, face, or brow.
compound presentation prolapse of one of the limbs of the fetus alongside the head in cephalic presentation or of one or both arms alongside a presenting breech at the beginning of labor.
footling presentation presentation of the fetus with one foot (single footling) or two feet (double footling) prolapsed into the maternal vagina.
funic presentation presentation of the umbilical cord in labor.
placental presentation placenta praevia.
shoulder presentation presentation with the fetal shoulder as the presenting part; see oblique lie and transverse lie.
transverse presentation transverse lie.
breech, britch
the buttocks of an animal; the backs of the thighs.
breech presentation
presentation of the buttocks of the fetus during parturition. See also presentation.
presentation
lie; the relationship of the long axis of the fetus to that of the dam. In foals and ruminants the normal presentation of a fetus during parturition is with the forelimbs extended forward so that the hooves are presented first, followed by the head between the forearms, followed by the trunk, abdomen and lastly the hindlimbs extended backward, i.e. anterior presentation.
In piglets the usual presentation is the nose first followed by the shoulders with the forelimbs beside the trunk, followed by the hindlimbs extended backward. The nose of puppies and kittens is presented first with the front paws forward under the neck and chin.
anterior presentation
presentation of the front feet and limbs followed by the fetal head in labor.
breech presentation
presentation of the fetal buttocks and tail in labor.
funic presentation
presentation of the umbilical cord in labor.
poll presentation
the fetus is presented with the forelimbs retained and the neck flexed so that the poll is presented in the cervix.
posterior presentation
the hindfeet are presented followed by the hindlimbs and hindquarters and tail; a normal variation in dogs and pigs.
transverse presentation
at birth the fetus is presented at the pelvic inlet with its long axis running across the long axis of the pelvic canal in the dorsotransverse position. It is the back of the fetus that can be palpated. There are no fetal parts with which to effect a correction.
)
Transverse presentation in a mare. By permission from Parkinson TJ, England GCW, Arthur GH, Arthur's Veterinary Reproduction and Obstetrics, Saunders, 2001
ventral head presentation
the fetus presents with the head and neck flexed beneath the body. Called also neck flexion.
breech presentation
Obstetrics Buttocks position at the time of delivery, a position that carries a 3-6-fold ↑ mortality due to complications–umbilical cord prolapse, tentorial tearing, cerebral hemorrhage of after-coming head; in
the US, BPs are usually delivered by C-section. See Cesarean section.
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