breech presentation


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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 pre·sen·ta·tion

presentation of any part of the pelvic extremity of the fetus, the nates, knees, or feet; more properly only of the nates; frank breech presentation occurs when the fetus presents by the pelvic extremity; the thighs may be flexed and the legs extended over the anterior surfaces of the body; in full breech presentation, the thighs may be flexed on the abdomen and the legs upon the thighs; and 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 that is typical of one of the above-mentioned presentations, while the other foot or knee may present.
Synonym(s): pelvic presentation

breech presentation

n.
The position of a fetus during labor in which the buttocks or feet appear first.

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.
enlarge picture
Breech presentation

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.

breech pres·en·ta·tion

(brēch prez'ĕn-tā'shŭn)
Presentation of any part of the pelvic extremity of the fetus, the nates, knees, or feet; more properly only of the nates; frank breech presentation occurs when the fetus presents by the pelvic extremity; the thighs may be flexed and the legs extended over the anterior surfaces of the body; in full breech presentation, the thighs may be flexed on the abdomen and the legs on the thighs, in footling presentation, the feet may be the lowest part; in incomplete foot presentation, incompleteknee presentation, one leg may retain the position which is typical of one of the above-mentioned presentations, whereas the other foot or knee may present.

Breech presentation

The condition in which the baby enters the birth canal with its buttocks or feet first.

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.
Enlarge picture
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.
References in periodicals archive ?
An exploratory study of women's experiences and key stakeholders views of moxibustion for cephalic version in breech presentation.
In a series of 181 consecutive breech presentations, 64 (35.
A 29-year-old woman, para 1, was booked during antenatal care for term elective CS for breech presentation.
Whilst we would promote normal birth, there are certain instances where caesarean sections are integral to ensuring a safe birth, and pregnancies where the baby is in a breech presentation is one such example.
An International Chiropractic Pediatric Association (ICPA) study showed the Webster Technique was successful in resolving breech presentations 92 percent of the time.
Outcomes at Three Months After Planned Cesarean vs Planned Vaginal Delivery for Breech Presentation at Term.
The ten-year surge in the rate of primary cesarean sections led researchers to hypothesize that given the difference in the prevalence of risk factors for CS by race/ethnicity such as breech presentation, shoulder dystocia, fetal distress, and other medical and obstetrical conditions, as well as the number of elective CS, the race or ethnicity of the first time mother might have a bearing on the CS outcome.
Baseline characteristics including parity, types of breech presentation, and anterior placenta were similar in both groups.
For 3-4 per cent of pregnancies the foetus will be in the breech presentation at term and in most of these cases the approach to delivery is controversial.
Combined with fewer cesareans for breech presentation (along with more cephalic versions), careful diagnosis of fetal distress, and active encouragement of VBAC, these efforts have resulted in lowering cesarean rates to less than 12 percent in various parts of the world.
Jeremy was finally delivered by Caesarian section, in breech presentation, with the fetal scalp electrode attached to his backside.
Men and women who were delivered in breech presentation have more than twice the risk of having their firstborn children delivered in breech position, according to a study published online in BMJ.