week 4: the 5 p'a Flashcards
what are the three types of fetal lie
longitudinal
oblique
transverse
what is biparietal diameter
diameter that will go out of mum
largest width of head that leaves birth canal
what is vertex presentation
ideal fetal presentation
basically baby chin tucked in so that the smallest diameter of head will pass through
what is station
position of presenting part relative to ischial spine
basically means degree of decent in relation to the pelvis
what is engagement
largest diameter of head has passed through pelvic brim
do fetal position
what are primary vs. secondary powers
primary is involuntary, passive birth involved in dilation and officiation
secondary is voluntary active labor and pushing
write down the 7 cardinal movements
what is the criteria for dystocia
over four hours of less than 0.5cm/hr cervical dilation
OR
over one hour of active pushing with no descent
what are the two types of dystocia for secondary powers
no urge to push
inadequate voluntary expulsive forces- ineffective pushing
what is a hypotonic vs. hypertonic uterus
hypertonic: too many contractions back to back
hypotonic: contractions aren’t strong enough to facilitate passing of baby
what is cephalopelvic disproportion
excessive fetal size
one of the “passenger” factors in dystocia
what is precipitous labor
opposite of dystocia, baby comes out too quick and body doesn’t have time to stretch