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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; during labor there may be either a vertex presentation or a breech presentation.

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.





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