Lie Definition In Obstetrics
Abnormal lie is referred to a breech where the buttocks are in positioned in uterus as to where the head should normally be.
Lie definition in obstetrics. Right acromiodorsoposterior radp the shoulder of the fetus is to the mother s right and the back is posterior. The obstetric examination is a type of abdominal examination performed in pregnancy. Fetal lie is the relationship of the fetus to the long axis of the mother. Vertex presentation with longitudinal lie.
Right acomiodorsoposterio transverse lie. Ecv is the manipulation of the fetus to a cephalic presentation through the maternal abdomen. Lie li the relationship of the long axis of the fetus to that of the mother. Longitudinal lie a situation in which the long axis of the fetus is parallel to that of the mother.
Fetal lie edit edit source. This is the most common position and lie. An unusual cause of persistent fetal transverse lie european journal of obstetrics gynecology and reproductive biology 10 1016 s0301 2115 97 00080 8 74 1 23 25 1997. Because the shoulder is placed so frequently in the brim of the inlet this malposition is often referred to as the shoulder presentation.
It is unique in the fact that the clinician is simultaneously trying to assess the health of two individuals the mother and the fetus. According to the leading part this is identified as a cephalic breech or shoulder presentation. Normal lie longitudinal lie fetus long axis is in line with the mother s uterus with its head down. The baby may lie directly across the maternal abdomen or may lie obliquely with the head or breech in the iliac fossa figs.
In obstetrics the presentation of a fetus about to be born specifies which anatomical part of the fetus is leading that is is closest to the pelvic inlet of the birth canal. Fetal lie refers to the relationship between the long axis of the fetus with respect to the long axis of the mother. Only 8 of. Right occiput anterior roa 21.
1 left occipitoanterior loa the occiput is close to the vagina hence known as vertex presentation faces anteriorly forward with mother standing and towards left. In describing fetopelvic relationships the clinician should carefully adhere to standard obstetrical nomenclature. The possibilities include a longitudinal lie a transverse lie and on occasion an oblique lie. Usually the breech is at a higher level than the head.
If the fetal lie is abnormal an external cephalic version ecv can be attempted ideally between 36 and 38 weeks gestation. In presentation either the head or breech presents first. A malpresentation is any presentation other than a vertex presentation with the top of the head first. Oblique lie a situation in which the long axis of the fetal body crosses that of the maternal.
Fetal position edit edit source. To a benign polypoid adenomyoma. Right occipitoanterior roa the occiput faces anteriorly and towards right.