normal labor and delivery- Moulton Flashcards
define labor
progressive cerival dilation resulting from regular uterine contractions that occur at least every 5 min and last 30-60 seconds
what is false labor?
” braxton- hicks contractions” irregular contractions, WITHOUT cervical change
what aer teh different diameters of the fetal head?
suboccipitobregmatic (9.5cm)- head well flex
supraoccipitomental- 13.5-brow presentation
occipitofrontal- 11
submentobregmatic- 9.5 - face presentation
what are the types of pelvises a woman can have?
gynecoid, android, anthroploid, platypelloid
what are the definitions of gynecoid?
most common
best type for vaginal birth
wide transverse diameter, slightly greater than anterior/posterior diameter
fetus head comes out occiput anterior ( looking down)
what is android pelvis?
baby comes out looking at ceiling, prominent ischial spines, narrow pubic arch, male type of pelvis, POOR PROGNOSIS FOR DELIVERY
what si anthropoid?
ape pelvis
larger anteroposterior diameter than transverse
narrow pubic arch
fetal head comes out looking up ( anterioposterior diameter)
what is platyploid pelvis?
short AP and wide transverse diameter
fetal head in transverse diameter
poor prognosis for delivery
how do you measiure the diagonal conjugate?
from the inferior portion of the pubic symphasys to the sacral promentory
what si the number for the diagonal conjugate that shows the pelvic inlet is adequate for delivery?
> 11.5 cm
what is the obstetric conjugate?
subtract two from the diagonal conjugate
what is fetal lie? what is fetal presentation?
fetal lie- determines if the infant is longitudinal, transverse or oblique
fetal presentation- the presenting part to the pelvis
what are teh things you want to know about the cervix when pregnant?
dilation, effacement, station, position, consistency
what are teh 4 steps of the leopold maneuvers?
- palpate the funds ( for head, buttocks, or transverse position)
- palpate for the spine
- palpate what is presenting in the pelvis
- palpate for cephalic prominence
what is the value for complete cervical dilation?
10cm
what is effacement? what are the ranges used?
thinning of the cervix, reported as % of change in length, normal is 3-5 cm, the range is thick–> 100% effaced
what is the “station” reffering to in the birthing process?
the degree of descent of the presenting part of the fetus. measured in cm from the presetning part to the ischial spines
range= -5 to 5
0= bony part of head is at the level of the ischial spine
if the baby is above the ischial spine= negative numbers
what si the value that is used for “crowning”
3 or 5
what happens in the first stage of labor?
onset of true labor to complete cervical dilation, there is a latent and active phase
what hapens in the second stage of labor?
comlete cervical dilation to delivery of infant
what happens in the third stage of delivery?
delivery of infant to delivery of placenta
what is teh fourth stage of labor?
placental delivery to stabilization of pateint