| breech presentation | Presentation of any part of the pelvic extremity of the foetus, the nates, knees, or feet; more properly only of the nates; frank breech presentation occurs when the foetus presents by the pelvic extremity; the thighs may be flexed and the legs extended over the anterior surfaces of the body; in (05 Mar 2000) |
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| presentation, breech | Birth buttocks first. During a breech presentation, the baby's buttocks present first. (12 Dec 1998) |
| full breech presentation | The thighs may be flexed on the abdomen and the legs upon the thighs, in footling presentation foot presentation the feet may be the lowest part; in incomplete foot presentation, incomplete knee presentation, one leg may retain the position which is typical of one of the above-mentioned presentations, while the other foot or knee may present. Synonym: pelvic presentation. (05 Mar 2000) |
| bear's-breech | <botany> See Acanthus. The English cow parsnip (Heracleum sphondylium) Source: Websters Dictionary (01 Mar 1998) |
| breech | The buttocks. (12 Dec 1998) |
| breech delivery | <obstetrics> The extraction or expulsion of the foetus which occurs buttocks or feet first. (27 Sep 1997) |
| breech extraction | Obstetrical extraction of the baby by the buttocks. (05 Mar 2000) |
| partial breech extraction | Assisted breech delivery by the obstetrician with spontaneous delivery of the foetus to the level of the umbilicus. (05 Mar 2000) |
| spontaneous breech extraction | Delivery of a foetus in the breech presentation without extraction by the obstetrician. (05 Mar 2000) |
| delivery, breech | A breech delivery is birth, buttocks first. (12 Dec 1998) |
| total breech extraction | Delivery of a foetus in breech presentation with complete extraction of the entire foetal body from the uterus. (05 Mar 2000) |
| acromion presentation | Transverse presentation with the shoulder as the presenting part. Synonym: acromion presentation. (05 Mar 2000) |
| antigen presentation | A cell that carries on its surface antigen bound to MCH Class I or Class II molecules and presents the antigen in this context to T-cells. Includes macrophages, endothelium, dendritic cells and Langerhans cells of the skin. See: MHC restriction, histocompatibility antigens. (18 Nov 1997) |
| vertex presentation | See: cephalic presentation. (05 Mar 2000) |
| cephalic presentation | Presentation of any part of the foetal head, usually the upper and back part as a result of flexion such that the chin is in contact with the thorax in vertex presentation; there may be degrees of flexion so that the presenting part is the large fontanel in sincipital presentation, the brow in brow presentation, or the face in face presentation. Synonym: head presentation. (05 Mar 2000) |