What are the 4 P’s?
passage, passenger, pwer, psyche
what is considered optimal diagonlal conjugate?
> 11.5cm
What is optimal intertuberous diameter?
8cm or greater
what is optimal pubic arch?
> 90 degrees
What is optimal for sacrospinous ligament?
2.5-3 fingerbreaths
What are the 5 important measurements in regards to passage?
- ob conjugate of the inlet
- distance between ischial spines
- suprapubic angle and bituberous diameter
- post sagittal diameters of the three planes
- curve and length of sacrum
The curve of the birth canal known as _____
Curve of Carus
main points regarding gynecoid pelvis
- prognosis good
- OA common
- fewer perineal tears
main points regarding android pelvis
- prognosis poor
- deep trasverse arrest
- narrow pubic arch common
- heart/wedge shaped
main points regarding anthropoid
- prognosis good
2. OP common
main points regarding platypelloid
- prognosis poor
- often abnormal lie
- delay at the pelvic inlet
- usually ends in c/s
what is the largest transverse diameter of the fetal skull?
biparietal 9.5cm
what is the shortest transverse diameter of the fetal skull?
bitemporal 8cm
what is the occipitofrontal diameter of the fetal skull (military attitude)
11cm
If the sagital suture is posterior, it is a _____ ______
anterior asynclitism
If the sagital suture is anterior, it is a ____ ____
posterior asynclitism
What is the definition of synclitism?
the sagittal suture is midway between the symphysis pubis and hte sacral promitory
Anterior vs posterior ansynclitism is based NOT on ____________ but to which parietal bone is _______
which maternal pelvic stucture the sagittal suture is closer to,
Dominant
which crosses the sutures….caput or cephalhematoma?
caput
what is a cephalhematoma?
bleeding beneath the periosteum
cephalhematoma does not cross the _______
sutures
what is “lie”
relationship of the long axis of the fetus to the long axis of the mother
what are the three types of lie?
transverse, longitudinal, olique
what are the three types of presentation?
caphalic, breeech, shoulder
