Prenatal, Parturition Flashcards
Fetal movement can be felt by a multigravid as early as
16 weeks
Fetal movement can be felt by a primigravid as early as
18 weeks
HCG is produced by this cell
Syncytiotrophoblast
Most accurate tool for gestational age assignment
Crown rump length
Fetal heart sounds csn be appreciated by doppler and stethoscope at what weeks AOG
10 weeks Doppler
16 weeks stethoscope
Normal weight gain per week in the 2nd and 3rd trimester
1 pound per week
Folate supplement for all women
0.4-0.8 mg per day
Folate supplement that can prevent NTD
400mcg
Contraindicated vaccines in pregnancy
MMR
Varicella
HPV
Normal amount of fetal movements
10 in 2 hours
Components of biophysical profile
NB MAT
Nonstress test Breathing Movement Tone Amniotic fluid volume
Baseline change in acceleration occurs when acceleration lasts
> 10 mins
Prolonged acceleration occurs when acceleration lasts
> 2 mins but <10mins
Most common deceleration pattern
Variable
What nerve is responsible for the decrease in FHR in late deceleration?
Vagal nerve
What are the phases of parturition
Quiescence
Activation
Stimulation
Involution
Which phase of parturition corresponds to the stages of labor?
Phase 3
Braxton Hicks contraction is in what phase of parturition
Phase 1
Women with these syndromes have greater prevalence of cervical incompetence
Ehlers Danlos
Marfan
Myometrial changes in the 2nd phase of parturition include increase in uterine irritability and responsiveness to uterotonics due to expression of
Contraction associated proteins
Formation of the lower uterine segment is brought about by this part of the uterus
Isthmus
During cervical ripening, these glands occupy most of the cervix
Endocervical glands
Cervical stretching during dilatation is called this reflex
Ferguson reflex
More passive part of the uterus during labor
Lower segment
Structure in the uterus where there is lower segment thinning and upper segment thickening
Physiologic retraction ring
Also called the pathologic retraction ring where there is extreme lower segment thinning
Bandl ring
Most important force in fetal expulsion
Maternal pushing
This is the leading portion of fluid and amniotic sac, located in front of the presenting part
Formed during the process of cervical effacement and dilatation
Forebag
Curve/pattern of cervical dilation during the preparatory and dilatational division of labor
Sigmoid
Curve/pattern formed when the station of the fetal head is plotted as a function of labor duration
Hyperbolic
Station 0 corresponds to what anatomical part of the pelvis
Ischial spine
Most important pelvic floor structure
Levator ani
Weakest layer of the placenta that separates from the implantation site
Decidua spongiosa
Terbutaline can cause uterine relaxation by
Increase cAMP levels- decreased calcium- relax uterus
