cephalopelvic disproportion


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disproportion

 [dis″pro-por´shun]
a lack of the proper relationship between two elements or factors.
cephalopelvic disproportion abnormally large size of the fetal skull in relation to the maternal pelvis, leading to difficulties in delivery.

cephalopelvic disproportion (CPD),

a condition in which the fetal head is too large to traverse the maternal pelvis.

cephalopelvic disproportion (CPD)

Etymology: Gk, kephale + L, pelvis, basin, dis, opposite of, proportio, similarity
an obstetric condition in which a baby's head is too large or a mother's birth canal too small to permit normal labor or birth. In relative CPD, the size of the baby's head is within normal limits but larger than average or the size of the mother's birth canal is within normal limits but smaller than average, or both; relative CPD is often overcome by molding of the head, the forces of labor, or the use of forceps to effect delivery. In absolute CPD, the baby's head is markedly or abnormally enlarged or the mother's birth canal is markedly or abnormally contracted, making vaginal delivery impossible. See also clinical pelvimetry, x-ray pelvimetry.

cephalopelvic disproportion

Obstetrics A structural and functional disparity between the fetus and the birth canal which makes vaginal delivery difficult or impossible. See Birth canal, Dystocia.

ceph·a·lo·pel·vic dis·pro·por·tion

(sef'ă-lō-pel'vik dis'prŏ-pōr'shŭn)
A condition in which the fetal head is too large to traverse the maternal pelvis, causing arrest of labor.

Cephalopelvic disproportion (CPD)

The condition in which the baby's head is too large to fit through the mother's pelvis.
Mentioned in: Cesarean Section

cephalopelvic

pertaining to the head of the fetus and the pelvis of the dam.

cephalopelvic disproportion
the head of the fetus is disproportionately large and will not pass through the pelvis of the dam. Caused usually by hydrocephalus.
References in periodicals archive ?
Based on the large variation between sites and between specialties in the diagnosis of cephalopelvic disproportion and the use of such interventions as cesarean section delivery and episiotomy, further examination of the appropriate indications and use of these procedures is warranted.
1] Other studies have demonstrated that women who use epidural anesthesia during labor have a higher rate of operative deliveries, malposition, cesarean section for dystocia or cephalopelvic disproportion, and a need for pitocin augmentation.
All the women had a history of C-section due to cephalopelvic disproportion at term and had never undergone vaginal delivery.
This leads to reduced caesarian section rates for cephalopelvic disproportion and a lower risk of neonatal hypoglycemia.
When the diagnoses leading to cesarean section were examined for primiparous patients, it was found that similiar numbers of patients in both groups had cesarean sections for malposition, fetal distress, and cephalopelvic disproportion.
21%, which was due to failure of induction of labour and minor degree of Cephalopelvic Disproportion [CPD].
The vacuum cup will "pop off" if it is applied incorrectly, if traction is excessive or applied in the wrong direction, or if cephalopelvic disproportion is present
However, obese women were significantly more likely than were the other groups to have dysfunctional labor or cephalopelvic disproportion.
Cephalopelvic disproportion was present, and excessive force was used during the forceps delivery.
An obstetrician and two mathematicians have developed an online calculator that accurately predicted the probability of cesarean section and cephalopelvic disproportion in primiparas seen in a large, multisite practice.
Cup detachment should not be viewed as a safety mechanism but as a warning of cephalopelvic disproportion.
Complication like contracted pelvis, cephalopelvic disproportion, multiple pregnancy and malpresentations were excluded from study.