transverse lie

lie (li) the relation of the long axis of the fetus with respect to that of the mother; cf. presentation and position.

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oblique lie  the situation during labor when the long axis of the fetal body crosses the long axis of the maternal body at an angle close to 45 degrees.

transverse lie  the situation during labor when the long axis of the fetus crosses the long axis of the mother.

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transverse lie

n.

An anatomical relationship in which the long axis of the fetus lies at right angles to the long axis of the mother.

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transverse lie,

abnormal presentation of a fetus in which the long axis of the baby's body is across the long axis of the mother's body. Unless the baby turns spontaneously or is turned by means of external or internal version, vaginal delivery is impossible.

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lie [li]

the relationship of the long axis of the fetus to that of the mother; see also presentation.

longitudinal lie a situation in which the long axis of the fetus is parallel to that of the mother; in presentation, either the head or breech presents first.

oblique lie a situation in which the long axis of the fetal body crosses that of the maternal body at an angle close to 45 degrees; in presentation, the shoulder usually presents first, but the arm or part of the trunk may also come first.

transverse lie a situation in which the long axis of the fetus is transverse to that of the mother; see illustration.

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transverse lie

Shoulder presentation Obstetrics A non-cephalic, non-breech position, in which the fetus's long axis is perpendicular to that of the mother's; TLs occur in 1:300 births, due to lower uterine obstruction–eg, placenta previa, intrauterine leiomyomas or an ovarian tumor in the cul-de-sac, or in a multiparous uterus with a lax wall Management C-section, less commonly, gentle external version, if the membranes have not ruptured; risks of an internal version are unacceptably high and rarely performed