Asynclitic birth
Encyclopedia
An asynclitic birth or asynclitism refers to the position
of a baby in the uterus
such that the head is tilted to the side, causing the fetal head to no longer be in line with the birth canal. Most asynclitism corrects spontaneously in the progress of normal labor. Persistence of asynclitism is usually a signal of other problems with dystocia
.
Other abnormal birth positions include breech birth
, posterior presentation, anterior presentation, and transverse presentation.
Kielland forceps are preferable obstetric forceps used in asynclitic births, for example by their sliding mechanism, availing for more appropriate adjustment of the blades.
Pelvimetry
Pelvimetry is the assessment of the female pelvis in relation to the birth of a baby. Traditional obstetrical services relied heavily on pelvimetry in the conduct of delivery in order to decide if natural or operative vaginal delivery was possible or if and when to use a cesarean...
of a baby in the uterus
Uterus
The uterus or womb is a major female hormone-responsive reproductive sex organ of most mammals including humans. One end, the cervix, opens into the vagina, while the other is connected to one or both fallopian tubes, depending on the species...
such that the head is tilted to the side, causing the fetal head to no longer be in line with the birth canal. Most asynclitism corrects spontaneously in the progress of normal labor. Persistence of asynclitism is usually a signal of other problems with dystocia
Dystocia
Dystocia is an abnormal or difficult childbirth or labour. Approximately one fifth of human labours have dystocia.Dystocia may arise due to incoordinate uterine activity, abnormal fetal lie or presentation, absolute or relative cephalopelvic disproportion, or a massive fetal tumor such as a...
.
Other abnormal birth positions include breech birth
Breech birth
A breech birth is the birth of a baby from a breech presentation. In the breech presentation the baby enters the birth canal with the buttocks or feet first as opposed to the normal head first presentation....
, posterior presentation, anterior presentation, and transverse presentation.
Kielland forceps are preferable obstetric forceps used in asynclitic births, for example by their sliding mechanism, availing for more appropriate adjustment of the blades.
See also
- PelvimetryPelvimetryPelvimetry is the assessment of the female pelvis in relation to the birth of a baby. Traditional obstetrical services relied heavily on pelvimetry in the conduct of delivery in order to decide if natural or operative vaginal delivery was possible or if and when to use a cesarean...
, the assessment of the female pelvis in relation to the birth of a baby - ChildbirthChildbirthChildbirth is the culmination of a human pregnancy or gestation period with the birth of one or more newborn infants from a woman's uterus...
External links
- Malpositions and malpresentations, World Health OrganizationWorld Health OrganizationThe World Health Organization is a specialized agency of the United Nations that acts as a coordinating authority on international public health. Established on 7 April 1948, with headquarters in Geneva, Switzerland, the agency inherited the mandate and resources of its predecessor, the Health...
's Managing Complications in Pregnancy and Childbirth, A guide for midwives and doctors