Antepartum 1 Flashcards
Wt gain if BMI < 19.8
28-40
Wt gain if BMI 20-26 normal
25-35
Wt gain if BMI 26-29 overweight
15-25
second trimester screening primarily detects what abnormalities
trisomy 18, 21 and neural tube defects
Wt gain if BMI >29 obese
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Who needs complete genetic evaluation?
>35, personal hx, prev hx, family hx, abnormal screening
What produces AFP
yolk sac then fetal liver
why is AFP elevated in maternal blood 7 reasons
“leaking” from neural tube defect ventral wall defect Oligo renal abnormalities Ectopic inaccurate EGA Malpositioned placenta
AFP levels are dependent on what maternal characteristics? 5
Gestational Age Race Maternal Age Weight Diabetes
AFP results > 2.5 MOM can indicate?
Neural tube defect omphalocele anencephaly
What MOM is used for AFP in diabetic mom?
2.0 MOM
Decreased AFP can indicate…
Trisomy 21
What are the 4 markers in a Quad Screen?
AFP Uncongugated Estriol hCG DIA (dimetric inhibin A)
Quad markers for Trisomy 21
- AFP down
- estriol down
- hCG up
Quad markers for Trisomy 18
- hCG down
- estriol down
- AFP down
Preferred method of estimated gest age for AFP
BPD by sono
Gest age for AFP/Quad screen
15-20 weeks
1 Reason for abnormal multiple marker screen?
error in EGA
Clinical follow up to an abnormal AFP/Quad screen?
Ultrasound Possible Amnio if US technology poor
Gest age for amnio?
15-16 weeks
Presence of what in amniotic fluid indicates a minimal risk of RDS in the newborn?
PG even when L/S is <2
Birth rate
The number of live births per 1000 population
Birth
The complete expulsion or extraction from the mother of a fetus after 20 weeks gestation or weighing 500gms or more.
Fertility rate
the number of live births per 1000 females aged 15-44
Live birth
the term used to record a birth whenever the newborn at or sometime after birth breathes spontaneously or shows any other sign of life such as a heartbeat or definite spontaneous movements of voluntary muscles
Stillbirth (fetal death)
the absence of signs of life at or after birth
Neonatal death
Early – death of a liveborn neonate during the first 7 days after birth Late – death after 7 days but before 29days
Infant death
All deaths of liveborn infants from birth to 12 months
Abortus/Abortion
A fetus or embryo removed or expelled from the uterus during the first half of gestation – 20 weeks or less / less than 500gms
Maternal mortality ratio
The number of maternal deaths that result from the reproductive process, per 100,000 live births. (known also as maternal mortality rate or maternal death rate)
Term
Neonate born after 37 completed weeks
Preterm
A neonate born before 37 completed weeks
post term
a neonate born after the completion of 42 weeks
SGA
Infants whose weights are below the 10th percentile for their gestational age
LGA
Infants whose weights are above the 90th percentile for their gestational age
Gravida
A woman who currently is pregnant or she has been in the past, irrespective of the pregnancy outcome
Para
A woman who has completed a pregnancy to 20 weeks or more Parity is the completion of the pregnancy, not how many fetuses were delivered
Primipara
A woman who has been delivered only once of a fetus or fetuses born alive or dead with an est gestation of 20 weeks or greater